ccna discovery q&a

8/6/2019 Ccna Discovery Q&A

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CCNA DISCOVERY MOD1

CHAPTER 1

1. Which computer component is considered the nerve center of thecomputer system and is responsible for processing all of the datawithin the machine?

RAM CPU video card sound card operating system

2. What are two advantages of purchasing a preassembled computer?(Choose two.)

usually a lower cost exact components may be specified extended waiting period for assembly

adequate for performing most general applications suited for customers with special needs

3. A user plans to run multiple applications simultaneously on acomputer. Which computer component is essential to accomplish this?

RAM NIC video card sound card storage device

4. Which adapter card enables a computer system to exchangeinformation with other systems on a local network? modem card controller card video card sound card

network interface card

5. What is the main storage drive used by servers, desktops, andlaptops? tape drive

hard drive optical drive (DVD) floppy disk drive

6. Which component is designed to remove high-voltage spikes andsurges from a power line so that they do not damage a computersystem? CPU

surge suppressor


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motherboard hard drive

7. What are two examples of output peripheral devices? (Choose two.)

printer speakers

flash drive external DVD external modem

8. What two functions does a UPS provide that a surge protector doesnot ? (Choose two.) protects the computer from voltage surges

provides backup power from an internal battery protects the computer from sudden voltage spikes gives the user time to phone the electrical company

gives the user time to safely shut down the computer if

the power fails provides backup power through a generator provided by the walloutlet

9. What is a word processor? It is a physical computer component.

It is a program designed to perform a specific function. It is a program that controls the computer resources. It is a functional part of an operating system.

10. What is the purpose of the ASCII code?

translates bits into bytes interprets graphics digitally translates digital computer language into binary language

represents letters, characters, and numbers with bits

11. Why do servers often contain duplicate or redundant parts? Servers require more power and thus require more components.

Servers should be accessible at all times. Servers can be designed as standalone towers or rack mounted. Servers are required by networking standards to have duplicateparts.

12. What are two benefits of hooking up a laptop to a dockingstation? (Choose two.) Mobility is increased.

An external monitor can be used. Alternate connectivity options may be available. The keyboard can be changed to a QWERTY-style keyboard. More wireless security options are available.


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13. Applications can be grouped into general use software or industryspecific software. What are two examples of industry specificsoftware? (Choose two.)

CAD presentation spreadsheet

word processing medical practice management contacts/scheduling management

14. Which three terms describe different types of computers? (Choosethree.) operating system network

laptop desktop Windows

mainframe

15. How is a server different from a workstation computer? The server works as a standalone computer.

The server provides services to clients. The workstation has fewer applications installed. The workstation has more users who attach to it.

16. How many values are possible using a single binary digit? 1

2

4 8 9 16

17. What measurement is commonly associated with computer processingspeed? bits pixels

hertz bytes

18. What can be used to prevent electrostatic discharge (ESD)? dry and non humid conditions carpeted floor

grounding strap uncluttered work space

19. If a peripheral device is not functioning, what are three thingsyou should do to solve the problem? (Choose three.)


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Use the testing functionality on the peripheral itself,if available. Verify that all cables are connected properly. Disconnect all cables connected to the computer except thoseconnected to the peripheral.

Ensure that the peripheral is powered on.

Disconnect the peripheral and verify that the computer is operatingnormally. Reload the computer operating system.

20. Which two steps should be performed when installing a peripheraldevice? (Choose two.)

Download and install the most current driver. Connect the peripheral using any cable and any available port onthe computer.

Connect the peripheral using an appropriate cable orwireless connection. Test the peripheral on another machine before installing it on theone where it will be used. Check the computer documentation to see if the peripheral vendor iscompatible with the PC vendor.

21. In newer operating systems, how are system resources assigned bydefault when components are installed? manually assigned by the operating system manually assigned by the administrator statically assigned by the component to a preset resource

dynamically assigned between the component and the

operating system

CHAPTER 2


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1. An operating system is severely damaged. All data on the partitionneeds to be deleted, and all application software must bereinstalled. Which installation method should be used to correct theproblem?

clean install upgrade

multi-boot virtualization

2. Which two statements should be included in a pre-installationchecklist when upgrading an operating system? (Choose two.) Verify that the hardware resources have multiple partitions.

Verify that the hardware resources meet or exceed thepublished minimum requirements. Complete a full backup of all important files and data. Overwrite any data currently contained on the drive to remove allcontents.

Verify that the hardware resources are certified to work with theexisting operating system prior to upgrading.

3. Which three pieces of information must be specified on a computerto allow that computer to send and receive information acrossnetworks? (Choose three.) closest server operating system

IP address subnet mask default gateway

network card driver

4. Which two items must be unique to each computer and cannot beduplicated on a network? (Choose two.) partition file system

computer name IP address operating system

5. Which method of interacting with an operating system involves

typing commands at a command prompt? CLI GUI redirector kernel translator

6. What are three characteristics of an operating system that isreleased under the GPL (GNU Public License)? (Choose three.)

full access to source code


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software often available free structured development cycle can be expensive to purchase limits what end-user can do with code

support normally user-based and often free

7. What is the purpose of a default gateway? physically connects a computer to a network provides a permanent address to a computer identifies the network to which a computer is connected identifies the logical address of a networked computer and uniquelyidentifies it to the rest of the network

identifies the device that allows local network computersto communicate with devices on other networks

8. Which two statements are true about drive partitions? (Choosetwo.)

Partitions are necessary in multi-boot installations. A hard drive can be divided into an operating systempartition and a data partition. User data is never overwritten when a drive is partitioned. A disk partition is a defined section of an operating system. Each partition requires a different file system type.

9. What occurs when computers are configured to receive their networkconfigurations dynamically? Each computer receives a permanent IP address. A network administrator enters information on each computer.

Each computer requests configuration information from aserver. An NIC automatically provides configuration information to thecomputer and stores that configuration information.

10. What are two ways that a user can interact with an operatingsystem shell? (Choose two.)

CLI OS

GUI

NIC kernel

11. Which three resource specifications are given by the manufacturerto ensure that an operating system performs as designed? (Choosethree.)

required hard disk space type of accelerated graphics card

recommended amount of RAM


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printer requirements

processor type and speed type of keyboard

CHAPTER 3


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1. Which term is used to describe the process of placing onemessage format into another format so that the message can bedelivered across the appropriate medium? flow control

encapsulation encoding

multicasting access method

2. Refer to the graphic. Five PCs are connected through a hub.If host H1 wants to reply to a message from host H2, whichstatement is true?

H1 sends a unicast message to H2, but the hubforwards it to all devices. H1 sends a unicast message to H2, and the hub forwards itdirectly to H2. H1 sends a broadcast message to H2, and the hub forwards it to

all devices. H1 sends a multicast message to H2, and the hub forwards itdirectly to H2.

3. Which two statements concerning networking standards aretrue? (Choose two.) adds complexity to networks encourages vendors to create proprietary protocols

provides consistent interconnections across networks ensures that communications work best in a single-vendorenvironment

simplifies new product development

4. What does the 100 mean when referencing the 100BASE-TEthernet standard? type of cable used type of data transmission

speed of transmission type of connector required maximum length of cable allowed

5. Which address does an NIC use when deciding whether to accept

a frame? source IP address source MAC address destination IP address

destination MAC address source Ethernet address

6. Which type of address is used in an Ethernet frame header? logical addresses only


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IP addresses only

MAC addresses only broadcast addresses only

7. What is the function of the FCS field in an Ethernet frame?

detects transmission errors

provides timing for transmission contains the start of frame delimiter indicates which protocol will receive the frame

8. What is the purpose of logical addresses in an IP network? They identify a specific NIC on a host device. They are used to determine which host device accepts theframe. They provide vendor-specific information about the host.

They are used to determine the network that the hostis located on.

They are used by switches to make forwarding decisions.

9. Which device accepts a message on one port and alwaysforwards the message to all other ports? modem switch router

hub

10. Which two networking devices are used to connect hosts tothe access layer? (Choose two.)

router hub switch server computer

11. Host A needs to learn the MAC address of Host B, which is onthe same LAN segment. A message has been sent to all the hostson the segment asking for the MAC address of Host B. Host Bresponds with its MAC address and all other hosts disregard therequest. What protocol was used in this scenario?

ARP DHCP DNS WINS

12. A switch receives a frame with a destination MAC addressthat is currently not in the MAC table. What action does theswitch perform? It drops the frame.


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It sends out an ARP request looking for the MAC address.

It floods the frame out of all active ports, exceptthe origination port. It returns the frame to the sender.

13. What is a benefit of having a router within the distribution

layer? prevents collisions on a local network

keeps broadcasts contained within a local network controls which hosts have access to the network controls host-to-host traffic within a single local network

14. Refer to the graphic. What does the router do after itdetermines that a data packet from Network 1 should be forwardedto Network 2? It sends the data packet as it was received.

It reassembles the frame with different MAC addresses

than the original frame. It reassembles the data packet with different IP addressesthan the original data packet. It reassembles both the packet and the frame with differentdestination IP and MAC addresses.

15. Which table does a router use to make decisions on where adata packet is to be sent? ARP table

routing table network table

forwarding table

16. If the default gateway is configured incorrectly on thehost, what is the impact on communications? The host is unable to communicate on the local network.

The host can communicate with other hosts on thelocal network, but is unable to communicate with hostson remote networks. The host can communicate with other hosts on remote networks,but is unable to communicate with hosts on the local network. There is no impact on communications.

17. What device is typically used as the default gateway for acomputer? a server hosted by the ISP

the router interface closest to the computer a server managed by a central IT department the switch interface that connects to the computer

18. If a router receives a packet that it does not know how to


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forward, what type of route must be configured on the router toprevent the router from dropping it? dynamic route

default route destination route default destination

19. Which two items are included in a network logical map?(Choose two.)

naming scheme IP addressing scheme length of cable runs physical location of networking devices specific layout of interconnections between networking devicesand hosts

20. An integrated router can normally perform the functions of

which two other network devices? (Choose two.) NIC

switch e-mail server application server

wireless access point

21. What is a reason for disabling simple file sharing? It enables the user to map a remote resource with a localdrive. It enables the user to share all files with all users and

groups. It enables the user to share printers.

It enables the user to set more specific securityaccess levels

CHAPTER 4


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1. Which definition describes the term Internet? a group of PCs connected together on a LAN a group of PCs connected together by an ISP

a network of networks that connects countries aroundthe world a worldwide collection of networks controlled by a single

organization

2. What type of connection point is a point of presence (POP)? between a client and a host between two local networks between a computer and a switch

between an ISP and a home-based LAN

3. What is the term for the group of high-speed data links thatinterconnect ISPs? Internet LAN

ISP backbone Internet gateways Internet providers

Internet backbone

4. Which device can act as a router, switch, and wireless accesspoint in one package? hub bridge modem repeater

ISR

5. What are three characteristics of business class ISP service?(Choose three.)

fast connections extra web space free Windows upgrade cheapest cost available to all users

additional e-mail accounts replacement hardware at no cost

6. What is a major characteristic of asymmetric Internetservice? Download speeds and upload speeds are equal. Download speeds are slower than upload speeds.

Upload speeds and download speeds are different. Upload speeds and download speeds are irrelevant.

7. Which three elements are required to successfully connect tothe Internet? (Choose three.)


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an IP address file sharing enabled

a network connection server services enabled

access to an Internet service provider an address obtained directly from the RIR

8. What term describes each router through which a packettravels when moving between source and destination networks? NOC ISP

hop segment

9. What does the tracert command test? NIC functionality the ISP bandwidth

the network path to a destination the destination application functionality

10. What type of end-user connectivity requires that an ISP havea DSLAM device in their network? analog technology cable modem technology

digital subscriber line technology wireless technology

11. Why would an ISP require a CMTS device on their network?

to connect end users using cable technology to connect end users using analog technology to connect end users using wireless technology to connect end users using digital subscriber line technology

12. Refer to the graphic. What type of cabling is shown? STP UTP coax

fiber

13. Refer to the graphic. What type of cabling is shown? STP

UTP coax fiber

14. Which two places are most appropriate to use UTP cabling?(Choose two.) between buildings


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in a home office network where EMI is an issue in a cable TV network

inside a school building in a manufacturing environment with hundreds of electricaldevices

15. What does adherence to cabling standards ensure? data security no loss of signal no electromagnetic interference

reliable data communications

16. Refer to the graphic. What type of cable is shown?

crossover eight coax channels multimode fiber

single-mode fiber straight-through

17. What connector is used to terminate Ethernet unshieldedtwisted pair (UTP) cabling? ST BNC RJ-11

RJ-45

18. Which two characteristics describe copper patch panels?

(Choose two.) uses RJ-11 jacks

uses RJ-45 jacks supports only data transmissions

allows quick rearrangements of network connections forwards transmissions based on MAC addresses

19. What are two advantages of cable management? (Choose two.) requires no preplanning

aids in isolation of cabling problems protects cables from physical damage

provides compliance with future standards provides a short-term solution for cable installation

20. What are two common causes of signal degradation when usingUTP cabling? (Choose two.) installing cables in conduit

having improper termination losing light over long distances installing low quality cable shielding


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using low quality cables or connectors

21. What are three commonly followed standards for constructingand installing cabling? (Choose three.)

pin outs cable lengths

connector color connector types cost per meter (foot) tensile strength of plastic insulator

CHAPTER 5


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1. How large are IPv4 addresses? 8 bits 16 bits

32 bits 64 bits 128 bits

2. Refer to the graphic. A user at the workstation cannot connect tothe server. All cables have been tested and are working and alldevices have IP addressing. However, the user cannot ping the server.What is causing the problem? The router interface does not have a default gateway. The switch does not have an IP address and default gateway.

The workstation and server are on different logicalnetworks. The workstation does not know the MAC address of the switch.

3. Which part of an IP address identifies a specific device on anetwork? first two octets third and fourth octets network portion

host portion only the fourth octet

4. Given a host with the IP address 172.32.65.13 and a default subnetmask, to which network does the host belong? 172.32.65.0

172.32.65.32 172.32.0.0 172.32.32.0

5. Which default subnet mask provides the most host bits?

255.0.0.0 255.255.0.0 255.255.255.0 255.255.255.252

6. How many bits are available for Class B host IP addresses using a

default subnet mask? 4 8

16 24

7. How many usable hosts are available given a Class C IP addresswith the default subnet mask?

254


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255 256 510 511 512

8. Assuming a default mask, which portion of the IP address175.124.35.4 represents the host? 175.124

35.4 .4 124.35.4 175.124.35

9. Which of the following are private IP addresses? (Choose three.)

10.1.1.1 172.32.5.2

192.167.10.10 172.16.4.4 192.168.5.5 224.6.6.6

10. What destination IP address is used in a unicast packet? a specific host a group of hosts the default gateway the network broadcast address

11. What is the destination MAC address in a multicast Ethernetframe? the MAC address of the sending host the MAC address of the destination host

an address that begins with 01-00-5E in hexadecimal a 48-bit hexadecimal address expressed as FF-FF-FF-FF-FF-FF

12. Yvonne is talking to her friend on the phone. What type ofmessage is this? broadcast simulcast

multicast unicast

13. What information must be included within a unicast message for itto be delivered on an Ethernet network? MAC and IP addresses for the default router IP address and subnet mask of the default gateway MAC and IP addresses that correspond to a destination group

MAC and IP addresses that correspond to a specific


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destination host

14. A PC obtains its IP address from a DHCP server. If the PC istaken off the network for repair, what happens to the IP addressconfiguration? The configuration is permanent and nothing changes.

The address lease is automatically renewed until the PC isreturned.

The address is returned to the pool for reuse when thelease expires. The configuration is held by the server to be reissued when the PCis returned.

15. Which type of server dynamically assigns an IP address to a host? ARP

DHCP DNS

RARP

16. Which three statements describe a DHCP Discover message? (Choosethree.) The source MAC address is 48 ones (FF-FF-FF-FF-FF-FF).

The destination IP address is 255.255.255.255. The message comes from a server offering an IP address.

The message comes from a client seeking an IP address. All hosts receive the message, but only a DHCP serverreplies. Only the DHCP server receives the message.

17. Refer to the graphic. A host connects to a Linksys integratedrouter that is also a DHCP server and receives an IP address from it.Which address does the host need to access the ISP and the Internet? IP address of the destination host public gateway IP address of the ISP external IP address of the integrated router that connects to theISP

internal IP address of the integrated router thatconnects to the local network

18. Which statement is true concerning private IP addresses? ensures that two networks separated by the Internet use unique IPnetwork numbers allows internal hosts to communicate with servers across theInternet

solves the issue of a finite number of available publicIP addresses allows for ISPs to be able to quickly determine network location


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19. What is one of the purposes of NAT? filters network traffic based on IP address ranges

prevents external users from detecting the IP addressesused on a network inspects traffic that might be harmful or used in an attack against

the network translates IP addresses into easy-to-remember domain names

20. Which two statements describe packets that are sent through aLinksys integrated router using NAT? (Choose two.) Packets that are sent to any destination need to be translated. Packets that are sent to hosts on the same network need to betranslated.

Packets that are sent to a destination outside the localnetwork need to be translated. Packets that are sent to a destination outside a local network do

not need to be translated. Packets that are sent between hosts on the same localnetwork do not need to be translated.

21. Refer to the graphic. NAT and DHCP are installed on the Linksysintegrated router. Which IP address is most likely to be assigned tothe local computer, Host1?

10.0.0.17 128.107.1.2 192.135.250.0 209.165.201.1

CHAPTER 6


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1. A user types www.cisco.com into a web browser address textbox.What does www.cisco.com represent?

the IP address of a web server a physical network address the closest router interface to the source the source IP address in the data transmission

2. What type of server would use IMAP? DNS DHCP

e-mail FTP Telnet web

3. Which type of server would most likely be used first by a networkclient in a corporate environment?

DNS DHCP e-mail FTP Telnet web

4. Which protocol is used by FTP to transfer files over the Internet?

TCP SMTP UDP

SNMP

5. Which protocols are TCP/IP application layer protocols? (Choosetwo.) UDP

FTP IP

SMTP TCP

6. Which of the following are layers of the TCP/IP model? (Choose

three.) Application Physical

Internet Network Access Presentation

7. You are creating a network-based video game. What influences yourdecision about which transport protocol to use for the application?


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UDP will not disrupt the game to retransmit droppedpackets. TCP provides extra acknowledgements that will ensure smooth videodelivery. Both TCP and UDP can be used simultaneously to ensure speed andguaranteed delivery.

Both TCP and UDP may slow transmission and disrupt game operation,so no transport protocol should be used.

8. Whenever e-mail clients send letters, what device is used totranslate the domain names into their associated IP addresses? Uniform Resource Locator Network redirector server SNMP server

DNS server

9. Which application is most likely used to translate www.cisco.com

to 198.133.219.25? DHCP

DNS FTP HTTP POP SMTP

10. Refer to the graphic. Which protocol is used to access thiswebsite? IM

FTP HTTP SNMP VoIP

11. Which port number is used by SMTP? 20 21

25 26 110

12. Which protocol is used by e-mail servers to communicate with eachother? FTP HTTP TFTP

SMTP POP SNMP


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13. What client software enables logged in users to communicate withother logged in users in real time? blog e-mail web mail

instant messaging

14. An Internet server is running both FTP and HTTP services. Howdoes the server know which of these applications should handle anincoming segment? The packet header identifies it as an HTTP or FTP packet. The data in the segment is specially formatted for either HTTP orFTP.

The segment destination port number identifies theapplication that should handle it. The source port number is associated with one of these well known

server applications.

15. What term is used to describe how TCP/IP protocols are layeredand interact to format, address, and transmit information across anetwork? protocol hierarchy protocol modeling

protocol stack protocol layering

16. What three items are contained in an Ethernet frame? (Choose

three.) source IP address

source MAC address destination IP address

destination MAC address error-checking information

17. What information is contained in an IP header? source and destination IP addresses source and destination MAC addresses only destination IP and MAC addresses

both source and destination IP and MAC addresses

18. Cabling issues are associated with which OSI layer? 4 2

1 3

19. A device receives an Ethernet frame and recognizes the MAC


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address as its own. What does the device do to the message to get tothe encapsulated data? removes the IP header removes the TCP header passes data to the application layer

removes the Ethernet header and trailer

20. A client has decoded a frame and started the de-encapsulationprocess. In which order does the de-encapsulation process occur? 1) remove IP header

2) remove Ethernet header and trailer3) remove TCP header4) pass data to the application

1) add TCP header to data2) add an IP header3) add frame header and trailer4) encode the frame into bits

1) remove Ethernet header and trailer2) remove IP header3) remove TCP header4) pass data to the application

1) add TCP header to data2) add Ethernet header and trailer3) add an IP header4) encode the frame into bits

21. What is an advantage of the use of layers in the OSI referencemodel?

It breaks network communications into larger parts. It increases complexity.

It prevents changes in one layer from affecting otherlayers. It requires the use of single-vendor equipment for hardware andsoftware communications.

22. What is the correct order of the layers of the OSI referencemodel, starting at the lowest layer and working up the model? data link, physical, transport, network, presentation, session,application

physical, data link, network, session, transport, presentation,application physical, data link, network, transport, presentation, session,application

physical, data link, network, transport, session,presentation, application application, session, presentation, transport, data link, network,physical


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CHAPTER 7


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1. Why is IEEE 802.11 wireless technology able to transmit furtherdistances than Bluetooth technology? transmits at much lower frequencies

has higher power output transmits at much higher frequencies uses better encryption methods

2. What are three advantages of wireless over wired technology?(Choose three.) more secure longer range

anytime, anywhere connectivity easy and inexpensive to install ease of using licensed air space

ease of adding additional devices

3. What are two benefits of wireless networking over wired

networking? (Choose two.) speed security

mobility reduced installation time allows users to share more resources not susceptible to interference from other devices

4. A technician has been asked to provide wireless connectivity tothe wired Ethernet network of a building. Which three factors affectthe number of access points needed? (Choose three.)

the size of the building the number of solid interior walls in the building the presence of microwave ovens in several offices the encryption method used on the wireless network the use of both Windows and Appletalk operating systems the use of shortwave or infrared on the AP

5. Why is security so important in wireless networks? Wireless networks are typically slower than wired networks. Televisions and other devices can interfere with wireless signals.

Wireless networks broadcast data over a medium thatallows easy access. Environmental factors such as thunderstorms can affect wirelessnetworks.

6. What does the Wi-Fi logo indicate about a wireless device? IEEE has approved the device. The device is interoperable with all other wireless standards.

The device is interoperable with other devices of the


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same standard that also display the Wi-Fi logo. The device is backwards compatible with all previous wirelessstandards.

7. Which statement is true concerning wireless bridges?

connects two networks with a wireless link

stationary device that connects to a wireless LAN allows wireless clients to connect to a wired network increases the strength of a wireless signal

8. Which WLAN component is commonly referred to as an STA? cell antenna access point wireless bridge

wireless client

9. Which statement is true concerning an ad-hoc wireless network? created by connecting wireless clients in a peer-to-peernetwork created by connecting wireless clients to a single, centralized AP created by connecting multiple wireless basic service sets througha distribution system created by connecting wireless clients to a wired network using anISR

10. Refer to the graphic. In the Wireless menu option of a Linksysintegrated router, what does the Network Mode option Mixed mean?

The router supports encryption and authentication. The router supports both wired and wireless connections.

The router supports 802.11b, 802.11g, and 802.11ndevices. The router supports connectivity through infrared and radiofrequencies.

11. Refer to the graphic. In the Wireless menu of a Linksysintegrated router, what configuration option allows the presence ofthe access point to be known to nearby clients? Network Mode

Network Name (SSID) Radio Band Wide Channel Standard Channel

SSID Broadcast

12. Which two statements about a service set identifier (SSID) aretrue? (Choose two.)

tells a wireless device to which WLAN it belongs


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consists of a 32-character string and is not case sensitive responsible for determining the signal strength

all wireless devices on the same WLAN must have the sameSSID used to encrypt data sent across the wireless network

13. Which two statements characterize wireless network security?(Choose two.) Wireless networks offer the same security features as wirednetworks. Wardriving enhances security of wireless networks.

With SSID broadcast disabled, an attacker must know theSSID to connect. Using the default IP address on an access point makeshacking easier. An attacker needs physical access to at least one network device tolaunch an attack.

14. What type of authentication does an access point use by default?

Open PSK WEP EAP

15. Which statement is true about open authentication when it isenabled on an access point?

requires no authentication uses a 64-bit encryption algorithm

requires the use of an authentication server requires a mutually agreed upon password

16. What are two authentication methods that an access point coulduse? (Choose two.) WEP WPA

EAP ASCII

pre-shared keys

17. What is the difference between using open authentication and pre-shared keys? Open authentication requires a password. Pre-shared keys do notrequire a password. Open authentication is used with wireless networks. Pre-shared keysare used with wired networks.

Pre-shared keys require an encrypted secret word. Openauthentication does not require a secret word.


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Pre-shared keys require a MAC address programmed into the accesspoint. Open authentication does not require this programming.

18. What term describes the encoding of wireless data to preventintercepted data from being read by a hacker? address filtering authentication broadcasting

encryption passphrase encoding

19. What access-point feature allows a network administrator todefine what type of data can enter the wireless network? encryption hacking block

traffic filtering MAC address filtering

authentication

20. What are the two WEP key lengths? (Choose two.) 8 bit 16 bit 32 bit

64 bit 128 bit

21. Complete the following sentence: WEP is used to ______ , and EAPis used to _____ wireless networks.

encrypt; authenticate users on filter traffic; select the operating frequency for identify the wireless network; compress data on create the smallest wireless network; limit the number of users on

CHAPTER 8


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1. Identify three techniques used in social engineering. (Choosethree.) fishing

vishing phishing spamming

pretexting junk mailing

2. During a pretexting event, how is a target typically contacted? by e-mail

by phone in person through another person

3. While surfing the Internet, a user notices a box claiming a prizehas been won. The user opens the box unaware that a program is being

installed. An intruder now accesses the computer and retrievespersonal information. What type of attack occurred? worm virus

Trojan horse denial of service

4. What is a major characteristic of a Worm? malicious software that copies itself into other executableprograms tricks users into running the infected software

a set of computer instructions that lies dormant until triggered bya specific event

exploits vulnerabilities with the intent of propagatingitself across a network

5. A flood of packets with invalid source-IP addresses requests aconnection on the network. The server busily tries to respond,resulting in valid requests being ignored. What type of attackoccurred? Trojan horse brute force

ping of death SYN flooding

6. What type of advertising is typically annoying and associated witha specific website that is being visited? adware

popups spyware tracking cookies


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7. What is a widely distributed approach to marketing on the Internetthat advertises to as many individual users as possible via IM or e-mail? brute force

spam

spyware tracking cookies

8. What part of the security policy states what applications andusages are permitted or denied? identification and authentication remote access

acceptable use incident handling

9. Which statement is true regarding anti-virus software?

Only e-mail programs need to be protected. Only hard drives can be protected.

Only after a virus is known can an anti-virus update becreated for it. Only computers with a direct Internet connection need it.

10. Which two statements are true concerning anti-spam software?(Choose two.) Anti-spam software can be loaded on either the end-user PC or theISP server, but not both.

When anti-spam software is loaded, legitimate e-mail may

be classified as spam by mistake. Installing anti-spam software should be a low priority on thenetwork.

Even with anti-spam software installed, users should becareful when opening e-mail attachments. Virus warning e-mails that are not identified as spam via anti-spamsoftware should be forwarded to other users immediately.

11. What term is used to describe a dedicated hardware device thatprovides firewall services? server-based

integrated personal

appliance-based

12. Which acronym refers to an area of the network that is accessibleby both internal, or trusted, as well as external, or untrusted, hostdevices? SPI

DMZ


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ISR ISP

13. Which statement is true about port forwarding within a Linksysintegrated router?

Only external traffic that is destined for specific

internal ports is permitted. All other traffic is denied. Only external traffic that is destined for specific internal portsis denied. All other traffic is permitted. Only internal traffic that is destined for specific external portsis permitted. All other traffic is denied. Only internal traffic that is destined for specific external portsis denied. All other traffic is permitted.

14. To which part of the network does the wireless access point partof a Linksys integrated router connect? DMZ

external internal a network other than the wired network

15. Refer to the graphic. What is the purpose of the Internet Filteroption of Filter IDENT (Port 113. on the Linksys integrated router? to require a user ID and password to access the router

to prevent outside intruders from attacking the routerthrough the Internet to require a pre-programmed MAC address or IP address to access therouter

to disable tracking of internal IP addresses so they cannot bespoofed by outside devices

16. What statement is true about security configuration on a Linksysintegrated router? A DMZ is not supported. The router is an example of a server-based firewall. The router is an example of an application-based firewall.

Internet access can be denied for specific days andtimes.

17. What environment would be best suited for a two-firewall networkdesign?

a large corporate environment a home environment with 10 or fewer hosts a home environment that needs VPN access a smaller, less congested business environment

18. What is one function that is provided by a vulnerability analysistool?


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It provides various views of possible attack paths.

It identifies missing security updates on a computer. It identifies wireless weak points such as rogue access points. It identifies all network devices on the network that do not have afirewall installed. It identifies MAC and IP addresses that have not been authenticated

on the network.

19. Many best practices exist for wired and wireless networksecurity. The list below has one item that is not a best practice.Identify the recommendation that is not a best practice for wired andwireless security. Periodically update anti-virus software. Be aware of normal network traffic patterns. Periodically update the host operating system. Activate the firewall on a Linksys integrated router. Configure login permissions on the integrated router.

Disable the wireless network when a vulnerabilityanalysis is being performed.

20. What best practice relates to wireless access point security? activation of a popup stopper

a change of the default IP address an update in the antivirus software definitions physically securing the cable between the access point and client

21. Refer to the graphic. In the Linksys Security menu, what does theSPI Firewall Protection option Enabled provide?

It prevents packets based on the application that makes therequest. It allows packets based on approved internal MAC or IP addresses.

It requires that packets coming into the router beresponses to internal host requests. It translates an internal address or group of addresses into anoutside, public address

CHAPTER 9


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1. What should a network administrator do first after receiving acall from a user who cannot access the company web server? Reboot the web server. Replace the NIC of the computer. Ask the user to log off and log on again.

Ask the user what URL has been typed and what error

message displays.

2. A customer called the cable company to report that theInternet connection is unstable. After trying severalconfiguration changes, the technician decided to send thecustomer a new cable modem to try. What troubleshootingtechnique does this represent? top-down bottom-up

substitution trial-and-error

divide-and-conquer

3. Only one workstation on a particular network cannot reach theInternet. What is the first troubleshooting step if the divide-and-conquer method is being used? Check the NIC, and then check the cabling.

Check the workstation TCP/IP configuration. Test all cables, and then test layer by layer up the OSImodel. Attempt to Telnet, and then test layer by layer down the OSImodel.

4. Which two troubleshooting techniques are suitable for bothhome networks and large corporate networks? (Choose two.) having a backup ISR running network monitoring applications

documenting the troubleshooting process keeping a record of system upgrades and softwareversions keeping spare switches, routers, and otherequipment available

5. Identify two physical-layer network problems. (Choose two.)

hardware failure software configuration devices not able to ping

loose cable connections device driver configuration

6. Which ipconfig command requests IP configuration from a DHCPserver? ipconfig


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ipconfig /all

ipconfig /renew ipconfig /release

7. What command is used to determine the location of delay for apacket traversing the Internet?

ipconfig netstat nslookup ping

tracert

8. What command is used to determine if a DNS server isproviding name resolution? ipconfig netstat

nslookup

tracert

9. Which troubleshooting method begins by examining cableconnections and wiring issues? top-down

bottom-up substitution divide-and-conquer

10. A technician suspects that a Linksys integrated router isthe source of a network problem. While troubleshooting, the

technician notices a blinking green activity LED on some of theports. What does this indicate? Self-diagnostics have not completed. The power supply is the source of the problem.

The ports are operational and are receiving traffic. The ports are operational, but no traffic is flowing. There are no cables plugged into those ISR ports. The ports have cables plugged in, but they are not functional.

11. A PC is plugged into a switch and is unable to connect to

the network. The UTP cable is suspected. What could be theproblem? A straight-through cable is being used The connectors at both ends of the cable are RJ-45. The RJ-45 connectors are crimped onto the cable jacket.

A crossover cable is being used.

12. Refer to the graphic. What configuration is incorrect in thenetwork shown?


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The host IP address is incorrect. The host subnet mask is incorrect. The host default gateway is incorrect.

The wired connection is the wrong type of cable. The Linksys integrated router does not support wireless.

13. Which three settings must match on the client and accesspoint for a wireless connection to occur? (Choose three.)

SSID authentication MD5 checksum antennae type

encryption key MAC address filters

14. A technician is troubleshooting a security breach on a newwireless access point. Which three configuration settings make

it easy for hackers to gain access? (Choose three.) configuring NAT

broadcasting the SSID using open authentication enabling MAC address filters

using the default internal IP address using DHCP to provide IP addresses

15. Refer to the graphic. The wireless host cannot access theInternet, but the wired host can. What is the problem?

The host WEP key is incorrect. The host IP address is incorrect. The host subnet mask is incorrect. The host default gateway is incorrect. The integrated router internal IP address is incorrect. The integrated router Internet IP address is incorrect.

16. Refer to the graphic. What configuration is incorrect in thenetwork shown?

The host IP address is incorrect. The host subnet mask is incorrect. The host default gateway is incorrect.

The wired connection is the wrong type of cable. The Linksys integrated router does not support wireless.

17. When acting as a DHCP server, what three types ofinformation can an ISR provide to a client? (Choose three.) physical address MAC address

default gateway static IP address


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dynamic IP address DNS server address

18. What two items could be checked to verify connectivitybetween the router and the ISP? (Choose two.)

router status page

wireless card settings router operating system version local host operating system version

connectivity status as indicated by LEDs

19. A technician is unsuccessful in establishing a consolesession between a PC and a Linksys integrated router. Bothdevices have power, and a cable is connected between them. Whichtwo troubleshooting steps could help to diagnose this problem?(Choose two.)

Ensure the correct cable is used.

Ensure the SSID is the same on both devices. Ensure both devices have the same IP address. Ensure both devices have different subnet masks. Ensure the encryption type on both devices match.

Ensure the link status LED on the integrated routeris lit.

20. Network baselines should be performed in which twosituations? (Choose two.)

after the network is installed and running optimally after a virus outbreak is discovered on the network

after major changes are implemented on the network after several computers are added to the network at the end of the work week

21. Typically, help desk personnel assist end users in which twotasks? (Choose two.)

identifying when the problem occurred determining if other users are currently logged into thecomputer updating network diagrams and documentation

implementing the solution to the problem running a network baseline test determining the cost of fixing the problem

22. How does remote-access software help in the troubleshootingprocess? Remote access uses a live chat feature. Users have to be present so that they can view LEDs and changecables if necessary.


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Diagnostics can be run without a technician beingpresent at the site. FAQs can be consulted more easily.

23. Which two items should be added to the documentationfollowing a troubleshooting event? (Choose two.)

final resolution repetitive measures number of people involved in the problem accurate current network infrastructure diagrams

results of successful and unsuccessfultroubleshooting steps

CCNA DISCOVERY MOD1 final

1 Which three statements are true about local and network applications? (Choose three.)A local application is loaded in a local computer and can be accessed by a remote computer on the

network.**A network application is loaded in a local computer and accessed from a remote computer.

**A local application is loaded in a local computer and accessed only by the local computer.

A network application is loaded in a local computer and accessed only by the local computer.An example of a local application is e-mail.

**An example of a network application is instant messaging.

2A wireless DHCP client cannot connect to the Internet through a Linksys integrated router. When you

type ipconfig on the host, no IP address, subnet mask, or default gateway shows. What are two of thefirst things you will check? (Choose two.)**SSID

**if the wireless client is configured for DHCP

the cable between client and integrated routerthe firewall configuration on the integrated router

if the correct default gateway is configured on the client

if the correct default gateway is configured on the integrated router

3


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Refer to the graphic. Assume that the command output is from a wireless DHCP client that is connected

to a Linksys integrated router. What can be deduced from the output?

**The wireless connection is good.The WEP key or SSID needs to be checked.

The DHCP configuration on the router needs to be checked.

The wireless NIC driver or the NIC itself needs to be reinstalled.

4

What measurement is commonly used to describe communication speed when transferring data?**bps

cps

Hz

MB

5

What is an accurate description of network devices in the distribution layer?They are designed to interconnect individual hosts.

They are designed to interconnect multiple companies.

**They are designed to interconnect local network segments.They are designed to switch data packets as fast as possible.

6

When acting as a DHCP server, an integrated router can provide what three types of information to aclient? (Choose three.)

physical address

MAC address**default gateway

static IP address

**dynamic IP address**DNS server address

7Where do ISPs get the public addresses that they assign to end users?

ISPs create the addresses themselves.

ISPs are assigned addresses through the RFC.


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13

What layer is the first point of entry for a host into the network?

core layer**access layer

network layer

distribution layer

14

What two commands can be used to form a new binding if client information does not agree with theDHCP client table? (Choose two.)

**ipconfig /release

ipconfig /all

ipconfig /flushdns**ipconfig /renew

ipconfig

15

What are two advantages of purchasing a custom-built computer? (Choose two.)

**usually a lower costno waiting period for assembly

**user can specify higher performance components

supports higher-end graphics and gaming applicationsfewer components to replace

16

What information within a data packet does a router use, by default, to make forwarding decisions?**the destination MAC address

the destination IP address

the destination host namethe destination service requested

17What is a service pack?

an access policy

an agreement between a company and a vendor

a piece of code created to fix one specific problem**a collection of patches and updates released by a vendor

a small piece of software designed specifically for security issues

18

What is an ISP?

It is a standards body that develops cabling and wiring standards for networking.It is a protocol that establishes how computers within a local network communicate.

**It is an organization that allows individuals and businesses to connect to the Internet.

It is a networking device that combines the functionality of several different networking devices in one.

19

Which two statements correctly describe Media Access Control (MAC) addresses? (Choose two.)


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**MAC addresses are used to identify a specific NIC.

**MAC addresses are physical addresses.

MAC addresses contain a network number and unique host identification.

MAC addresses are always assigned to network devices by a network administrator.MAC addresses can be dynamically assigned.

20What is the name for the contract between a customer and an ISP that specifies requirements for uptime

and service response time?

DSLIAB

NAP

**SLA

21

What are two ways that a user can interact with an operating system shell? (Choose two.)

**CLIOS

**GUI

NICkernel

22Select the connection that would require a straight-through cable.

a switch to a hub

**a router to a switch

a switch to a switcha router to a router

23Choose the option that shows the correct sequence of steps in the encapsulation of TCP/IP data that is

passed from a source to a destination host?

A. converts data to bits for transmissionB. packages the data for end to end transport

C. adds the data-link header and trailer

D. adds the network IP address to the header of the frame

A,B,C,DA,C,D,B

B,D,C,A

B,C,D,A**D,C,B,A

24What is specified by the network number in an IP address?

**the network to which the host belongs

the physical identity of the computer on the networkthe node of the subnetwork which is being addressed

the broadcast identity of subnetwork


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25

Refer to the graphic. What is the purpose of assigning a Network Name of Academy?**It identifies the wireless LAN.

It translates IP addresses into easy-to-remember domain names.

It encrypts data between the wireless client and the access point.

It allows access to the AP configuration GUI by name rather than address.It translates an internal address or group of addresses into an outside, public address.

26Which of the following statements best describes DNS?

DNS servers are used to map an IP address to a physical address.

**DNS servers are used to map a name to an IP address.DNS servers are used to configure logical address information for host computers.

DNS servers are used to translate from private addresses to public addresses.

27

Which of the following are the address ranges of the private IP addresses? (Choose three.)

**10.0.0.0 to 10.255.255.255

200.100.50.0 to 200.100.25.255150.150.0.0 to 150.150.255.255

**172.16.0.0 to 172.31.255.255

**192.168.0.0 to 192.168.255.255127.16.0.0 to 127.31.255.255

28Which protocol is used to transfer files among network devices and perform file-management

functions?

DNS

**FTPHTML

HTTP

29

Select three statements that correctly describe how DHCP services may be provided. (Choose three.)

An integrated router provides IP configurations for most ISPs.An integrated router can act as both DHCP server and DHCP client.

A home PC using a static IP address obtained that address from a DHCP server.

**Most home network integrated routers receive an IP configuration directly from their ISP.**A variety of devices can act as DHCP servers, as

long as they run DHCP service software.

A home PC is required by standards to obtain an IP


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address and default gateway from a DHCP server (usually the ISP).

30

Refer to the graphic. Based on the information that is shown, what statement is true?

This configuration would be commonly found in an ad hoc wireless network.

Any wireless client that is attached to this access point would have the same IP address and SSID.**All wireless devices that are connected to this access point must have an assigned SSID of Academy.

In addition to accepting wireless client requests, this access point must connect to the wired network.

31

Identify two causes of physical layer network problems. (Choose two.)

logical addressing issues**improperly terminated cables

**cables plugged into wrong ports

incorrect MAC address assignedpackets received out of sequence

incorrect subnet mask on an interface

32Which part of the electromagnetic spectrum is commonly used to exchange data between a PDA and a

computer?

FMradar

**infrared

ultraviolet

33

Which of the following are transport layer protocols of the TCP/IP model? (Choose two.)

FTP**UDP

SMTP

TFTP**TCP

34

For the second time in a week, workstations on a LAN are not able to log into the server. Thetechnician fixed the problem the first time, but cannot remember the steps taken to solve it. What aspect

of the troubleshooting process has the technician neglected?

identifying the problemasking end-users questions

**documenting the troubleshooting process

using structured techniques to solve a problem


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35

What action will a router take when it receives a frame with a broadcast MAC address?

It will not forward the frame to another network.It forwards the frame back to the sending host with its IP address as a response.

**It forwards the frame out of all interfaces except the interface where the frame was received.

It forwards the frame back out the receiving interface to insure all hosts on the local network receive it.

36

A network host is accessing a web server. What two protocols are most likely being used as the TCP/IPmodel application layer protocol and the internetwork layer protocol? (Choose two.)

IP

FTP

**TCPDHCP

**HTTP

37

Which statement is true concerning stateful packet inspection?

Access is permitted based on IP addresses of the source and destination devices.Access is permitted based on the MAC addresses of the source and destination devices.

Access is permitted only if the type of application that is attempting to reach the internal host is

allowed.**Access is permitted only if it is a legitimate response to a request from an internal host.

38

What does the term "attenuation" mean in data communication?**loss of signal strength as distance increases

time for a signal to reach its destination

leakage of signals from one cable pair to anotherstrengthening of a signal by a networking device

39What is the default subnet mask for a class B address?

255.0.0.0

**255.255.0.0

255.255.255.0255.255.255.255

40


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Refer to the graphic. Based on the configuration information that is shown, which three types of 802.11

networks are allowed access to the WLAN? (Choose three.)

802.11a**802.11b

802.11e

**802.11g**802.11n

802.11x

41Within a local network, which two items must be unique on a computer for it to successfully connect to

the network? (Choose two.)

**IP addresssubnet mask

**computer name

default gateway addressoperating system version

42When considering the purchase of a new operating system, what is meant by "Total Cost of

Ownership?"

applications and support costs

hardware and support costshardware and software costs

**hardware, software, and support costs

hardware, operating system, and applications costs

43

A computer joins the network and announces itself to all hosts on the LAN. What type of message doesthe computer send out?

**broadcast

simulcast

multicastunicast

44


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Refer to the graphic. What feature can be installed on the Linksys integrated router to convert private IPaddresses to Internet-routable addresses?

authentication

DHCPencryption

firewall

**NAT

WEP

45

When terminating UTP cabling, why is it important to untwist only a small amount of each wire pair?**minimizes crosstalk

makes installation faster

ensures wires are in correct ordermakes it easier to fit wires into connector

46A host sent a message that all other hosts on the local network received and processed. What type of

domain are all these hosts a part of?

local domain

multicast domaincollision domain

**broadcast domain

47

Your school network blocks all websites related to online gaming. What type of security policy is being

applied?identification and authentication

remote access

**acceptable use

incident handling

48


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Refer to the graphic. Assume that the exhibited output is from a host that is connected to a Linksys

integrated router. What is one of the first things you should check?

IP address on the hostIP address on the router

subnet mask on the host

default gateway on the host**link status LED on the front of the router

49How does a crossover cable make it possible for two "like devices" (for example, two switches) to

communicate?

The transmit pins are disconnected and only the receive pins are used.The transmit pins on one device are connected to the transmit pins on the other device.

The receive pins on one device are connected to the receive pins on the other device.

**The transmit pins on one device are connected to the receive pins on the other device.

50

What are two examples of storage peripheral devices? (Choose two.)

printer**flash drive

headphones

**external DVDbarcode reader

51

What are the two possible values for a digital bit? (Choose two.)**0

**1

AF

#

9

52What type of computer would most likely use a docking station?

**laptop

server


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desktop

mainframe

ccna discovery q&a

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