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1 Basic Computer Network

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Page 1: คู่มือการตั้งค่าLan

1Basic Computer Network

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2Basic Computer Network

�LAN OverviewLANs were created to save time, money, and enable users to share information and resources more easily. Some advantages that LANs provide include

� Simple and inexpensive connections

� Support for multiple media protocols

� Flexibility to provide any-to-any connections

� Support for new applications

� Ability to grow easily

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3Basic Computer Network

Outsideresources

Firewall Gateway

DMZ

Data network

LAN WAN

ServerServer

PrinterPrinter

Hub/Switch

Media

PC Workstation/ClientsPC Workstation/Clients

LAN

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4Basic Computer Network

Thicknet

Thinnet

LAN Media

Fiber Optic

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5Basic Computer Network

LAN Media

RJ-45�STP : Shielded Twisted Pair

�UTP : Unshielded Twisted Pair

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6Basic Computer Network

BNC connector

LAN Adaptor

RJ-45 connector

�NIC : Network Interface Card

�PCI : Peripheral Component Interconnect Cards

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7Basic Computer Network

�MAC Addressing• Aka Hardware address

• “Ethernet” (or 802.3) networks specify a 48-bit physical “MAC address”– 00-00-f8-75-5b-a6 -- Unique identifier for the network

interface card (NIC)– Address ranges are assigned to specific vendors e.g.,

“00-00” is Digital Equipment corp.– To find vendors MAC addresses

http://coffer.com/mac_find/

• Specific MAC address that means “broadcast”– ff-ff-ff-ff-ff-ff (All 1s)

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8Basic Computer Network

Hub

Switch

LAN Connecting Devices

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9Basic Computer Network

HUB• HUBs: ������ ��������� ������������ �����������������

!"#�� "��$%�!&��&'� ( � �!)#���&'�!*�����+������

• �,' ���!�-� 2 ��!.�"#� ��������� 1 "Passive HUBs� "#������� �� ����� ����,����' /'��*���0� ��������� 2 �Active HUBs� "#������� �� ����� �������������12��!�#��!�%+���+���*� �����,�����' /'��*���0�

3 HUBs ��� ����0',��+�,)�2�� � 1 *� �,,����� OSI Model

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10Basic Computer Network

Switch• Switches: �������� �!)'�!+ ����, HUBs "#��������*���0� ��������

�����*���0����� !"#�� "��$%�!&�� �#������"��$%�!&��� ���0'�,,!"#�*'��

• "�������6� ����!��#� Hubs "#� �����,)'� �����*� *���0�� �� �.�$"���"�,"�� *� ��������� )'� �� �#�� ( � ��%��"���"�,"�� ������'�

3 Switches � ����� ������ ����0',��+�,)�2�� � 2 *� �,,����� OSI Model (�)�!)#��� LANs � �� Topology � �!��#�����)

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11Basic Computer Network

Router• Router: �����!"#�*'��"��$%�!&��� ��������� �����!)#���J� !"#�*'��

"��$%�!&����!.� LANs – WANs �#� WANs – WANs ����� ������ ��*� ����� Router "#� ��$%���"�+!�#��!����� �����' /'��*���0����� !"#�*'��"��$%�!&���#�� ( (Internetworking Device)

• ���' /'��*���0�*� Router ���)�J�J&"�� IP J+���� ����0',��+�,)�2�� � 3 *� �,,����� OSI Model

TOT’s NETWORK

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12Basic Computer Network

LAN Topologies

BUS

STAR RING

• Bus• Ring• Star• Star-Bus

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13Basic Computer Network

�Star-Bus Topology

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14Basic Computer Network

+,-./0123456 Gigabit Ethernet

system 96::690;6<

IEEE 802.3ae

+,-./0123456 Gigabit Ethernet system 96::690;6<

IEEE 802.3z/802.3ab

+,-./0123456 Fast Ethernet system 96::690;6<

IEEE 802.3u

C6.D1EF/0123456 ......... 96:

:690;6< IEEE 802.3

GH906I46:/0J4 10 Gbps

GH906I46:/0J4 1000 Mbps

GH906I46:/0J4 100 Mbps

GH906I46:/0J4 10 Mbps

/DIL<LM21I46:/0J4 ETHERNET

&'�'( )'&�*'+ IEEE802.3

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15Basic Computer Network

Fast EthernetTwisted Pair

(UTP)......... /:90100 Mbps100baseT

Fiber Optic2000 /:9010 Mbps10baseF

Twisted Pair (UTP)

STAR100 /:9010 Mbps10baseT

Thick EthernetThick Coaxial500 /:9010 Mbps10base5

Thin Ethernet S0TG

CheapernetThin CoaxialBUS185 - 200 /:9010 Mbps10base2

UT-G/0123V62D1-WUX Cable

Topology D1-WUX

0F2FI46:264 W<3600HC-V5.

YXG:ZM

GH906I46:/0J4 3600HC-V5.

YXG:ZM

:690;6< 360

/UT-G:95G

:690;6<360/UT-G:95G ETHERNET

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IP Address3 Internet Protocol Address !�-�����!�*��� �% �����&'� ( � �!)#���&'�

��J" *'�� � ���'12����� �����'/0�&%+��, Hardware ����,+���

– "'�*� ����!�*�������!"#�*'�� (Host Address)

– "'�*� ����!�*!"#�*'�� (Network Address)

• � *��+ 32 bit �,' !�-� 4 �'�� �&'���'�� � "'�&�2 �&' 0- 255

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17Basic Computer Network

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18Basic Computer Network

IP Addresses – Class A• Class A

– Start with binary 0– All 0 reserved– 01111111 (127) reserved for loopback– Range 1.x.x.x to 126.x.x.x– All allocated

• Private address 10.x.x.x

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19Basic Computer Network

IP Addresses – Class B• Start with binary 10

– Range 128.x.x.x to 191.x.x.x– Second Octet also included in network address– 214 = 16,384 class B addresses– All allocated

• Private address range172.16.x.x – 172.31.x.x

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IP Addresses – Class C• Start with binary 110

– Range 192.x.x.x to 223.x.x.x– Second and third Octet also part of network address– 221 = 2,097,152 class C addresses– Near all allocated

• Private address range192.168.x.x

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21Basic Computer Network

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22Basic Computer Network

Dynamic Host Configuration ProtocolDynamic Host Configuration Protocol

• DHCP "#� Service � ��������� �������� IP Address *� �,,!"#�*'�� �����,!"#�� �0�*'�� (Client) ��&J���&% ������/0�+0���,,��'&�� "����,&�2 "'�&'� ( ����!)#���&'�� �!"#�� Client � ��!"#�� �����)� ���,,+� ��'�� !"#�� ���,%�� (Server) ��&�� &%+&�2 Service ��,�&' ���!������ ��� run ��� �'��� �!"#�� Client ��&�� ��,�&' ����,�,, IP ���!"#�� ���,%��

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23Basic Computer Network

Domain Name� )#��J+!�� (Domain Name) ����6] )#��� �60�! �������! ��!�-�

����!�*�%�!���!�̂& (IP Address) �����!�-�)#��� ��#��"�������6] ��'�� �� �#�!���*� !�^,�1&���2�(

� !)'�!�^,�1&�*� !�"!�" � ����!�* IP "#� 202.44.204.33 � �������+ ")#��J+!��" !�-� www.nectec.or.th

� ��&%+&'����'� "��$%�!&����!"#�*'�� �)� IP Address !"#�� � ��������� �!�-�&�� Lookup �#�+�)� ����!�b++0,��) ����!�*���)#��� �!�-�&�����c (Domain Name) ! ���'� Domain Name Server

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24Basic Computer Network

1'�12'3+456'57)89:�&7�;<+1'��=>�7)&67 Network

Windows 98 / ME

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25Basic Computer Network

1'� setup windows 98/ME

Click Y46D1- My computer /MTG3 Properties

Network Interface Card

904EVGC3609[\9H]. Network Interface Card

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26Basic Computer Network

1'� setup windows 98/ME

• start

• Setting

• Control Panel

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27Basic Computer Network

1'� setup windows 98• !�b+ Control Panel !�#�� Network

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28Basic Computer Network

Network Configuration

1

2

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29Basic Computer Network

TCP/IP Properties : IP Address

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30Basic Computer Network

DNS Configuration

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31Basic Computer Network

• &����,��!)#���&'����'� PC ��, Network J+���!*����� � DOS Prompt ���� $%�$� ipconfig /all

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32Basic Computer Network

3�>7?���� RUN 89)8; winipcfg

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33Basic Computer Network

1'�12'3+456'57)89:�&7�;<+1'��=>�7)&67 Network

Windows XP / 2000

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34Basic Computer Network

1. 5@91A:'&�( Icon My network Place F@G:5@91��� Properties1'� Setup Windows XP / 2000

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35Basic Computer Network

2. 5@91A:'&�( Local Area connection F@G:5@91��� Properties

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36Basic Computer Network

3. Double Click &�( Internet Protocol (TCP/IP)

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37Basic Computer Network

4. �@>71 Obtain an IP automatically, Obtain DNS server automatically

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38Basic Computer Network

1'� Setup V6'+ Control Panel

����� Control Panel

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39Basic Computer Network

Double Click ��� Network Connections

Double Click Network

Connections

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40Basic Computer Network

"�%�*��� � Local Area Connection ���!�#�� Properties

Click ���

����� Properties

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41Basic Computer Network

�@>71 Internet Protocol (TCP/IP) F@�5@91����WX) Properties F@G:<+FYZ General <3G�@>71 Obtain an IP address automatically F@� Obtain DNSserver address automatically.

�@>71 internet Protocol(TCP/IP)

�@>71 obtain an IP address

�@>71 obtain DNS

Click Properties

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42Basic Computer Network

• &����,��!)#���&'����'� PC ��, Network J+���!*����� � DOS Prompt ���� $%�$� ipconfig /all

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43Basic Computer Network

52'\]�(&�:^\7Z�5�>7A6'_ Ping52'\]�(&�:^\7Z�5�>7A6'_ Ping• �)�����&����,�6�����!)#���&'����'� !"#�� &���� ��,!"#�� ������

J+����' �$^"!�^�*���0�*��+!�̂� ( ��/'���� J�J&"�� ICMP (Internet Control Message Protocol) ���!"#�� ������ � �!��' �$"̂!�^�����2���� ����0' �^��&�,���,��!�-� ICMP Echo Reply (&���' !�-� ICMP Echo Request)

• ,� � � �!"#�� ������ � �� block ping !�����+��� Fire wall !�#�� �����!�&�+���"������+.�� ������/�� ��+�����!�-��'�&%+&'�!"#�� ������ ��'�+�

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44Basic Computer Network

��̀4 command prompt 89)8;52'\]�( Ping &')4G:_�@A IP address 7W�1�a;�@'_�'(���&94&67

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45Basic Computer Network

Wireless LANWireless LAN

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46Basic Computer Network

������� Wireless LAN (Local Area Network) ���� WLAN � !"�������#�$�#���%�&'(�)�&��*)#'��+,-./%��01$"2.. peer-to-peer /5$�&6�% 27�(+#0�"5 (station) #�&��0#�$�#��09�:-";,%�,7��2..;�%#� <9$��' 2..���:��#�$�#��� !";,%/-=�2..>?,7��>?, (point-to-point) ����2..>?,7���(�>?, (point-to-multi point)

������� WLAN � !"B((-CDE���:��"F�������� LAN &� �-. �?� �,� (5$"#�$�/5$/F��"%�/5$� !"7-):(���-.#�� <9$��,1&������� LAN &5:��6G%#����.1(2..7��� H

<[26:YG.LI0.Y562 Wireless LAN

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47Basic Computer Network

I_`a0FL2U<bYG.0FCCVT-GV60c0XV62

� ;&�&5�%�>F�:-,6"���$��7F�2�"��/5$#�&��06G%.�1:��71,7��#�$�#��

� 6"�I+:F�(-�71,7��#�$�#�� B'%6G%.�1:��#�&��0��(�$�"/5$;,%

� �������71,7��#�$�#��#�&��0#�%���9="6G%��";,%��� �),��*) 2(+7%"/?"0'::)���������/5$6G%#�

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48Basic Computer Network

4[4Hd<6360YG.LI0.Y562YXG:ZMc0XV62

Wireless LAN (Proprietary)

Wired LAN Network

IEEE Standard ETSI Standard

IEEE 802.11

IEEE: Institute of Electrical and Electronics EngineersETSI: European Telecommunications Standards Institute

HiperLAN/1HiperLAN/2HiperACCESS

IEEE 802.11b (Wi-Fi) IEEE 802.11a (Wi-Fi5)

IEEE 802.11g (Wi-Fi)

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49Basic Computer Network

IEEE 802.11Specifications

2.4-2.497 GHz5.15-5.35 GHz

5.425-5.675 GHz2.4-2.497 GHz

Frequencies

CCK= 1,2,5.5,11 Mbps

OFDM=6,9,12,18,24,36,48,54 Mbps

6,9,12,18,24,36,48,54 Mbps

1,2,5.5,11 Mbps

Data rates

OFDM and CCKOFDMCCKModulation

54Mbps54Mbps11MbpsMaximum Data rate

June 2003July 1999July 1999Standard Approved

802.11g802.11a802.11b

�OFDM (Orthogonal Frequency Division Multiplexing)

�CCK (Complementary Code Keying)

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50Basic Computer Network

Wi-Fi� Wi-Fi 25G:6E63Ig6456 Wireless Fidelity /ah</I0T-G.S:62D6.360IX6YG.U_\:690;6</I0TGY562c0XV62 IEEE 802.11 (Institute of Electrical and Electronic Engineer 802.11)

� :690;6<<1]3g6S<\/DIL<LM21D1-WUXV0X6./I0TGY562IG:i[4/9G0bc0XV62 (Wireless Local Area Network (WLAN)) L\2WUXIMT-<4[D2_256<I46:j1- UHF (Ultra High Frequency)

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51Basic Computer Network

Wireless Network Components

RF interface for iPAQ / Casiopia)

Access Point

………….……. ………………….

……

……

……

……

.….

RF interface for desktop PC

RF interface for notebook

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52Basic Computer Network

Access Point� /ah<E_\kZ<2b3M6.Vg6S0HC Wireless Network

� V6:60jjG\/aM1-2</ah</V6G636k /iT-G/i[-:0F2F

0HC - V5.c\X

� V6:60j/YX60SHVYXG:ZMD1-0HC/YX6lMFV5.GG3\X42

0SHV lCC 128 C[9

� Eg63H\360/UT-G:95G\X42360M.DF/C12< MAC

address

� V6:60ja0HCLS:\360Dg6.6<c\XSM62lCC c\Xl35

Client mode, Infrastructure, Repeater, lMF

Multipoint repeater

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53Basic Computer Network

RF Interface Card

lM<c0XV62lCC PCMCIA USB portCard Compact flash

360b\ PCMCIA 9[\9H]./YX63HC360b\ PCI 360b\ PCI Wireless c:59XG.:1360b\ PCMCIA

�PCMCIA : Personal Computer Memory Card Internationa l Association

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54Basic Computer Network

������������ �

���������� Wi-Fi � ������������������������������������

������������� ���� ���������������!�����"�� IEEE 802.11a/b/g

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55Basic Computer Network

Wireless Bridging (LAN-to-LAN connectivity)Infrastructure connection

Ad- hoc connection

&'()*+,-./0-1-234(210'5 WLAN

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56Basic Computer Network

Peer to Peer Topology (Ad Peer to Peer Topology (Ad Peer to Peer Topology (Ad Peer to Peer Topology (Ad hochochochoc))))o ��������������� �������������� �� ���������������� Access Point

o ��������������� �������������������� (������� 3 ��)

o ��� ��������� ��� ������� !���" #��$�����%��&����� ���� �� '

AdAdAdAd----hoc network is a network typically created in a spontaneous mannhoc network is a network typically created in a spontaneous mannhoc network is a network typically created in a spontaneous mannhoc network is a network typically created in a spontaneous manner.er.er.er.

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57Basic Computer Network

360/UT-G:95GlCC Infrastructure WUX Access Point 9H4/\124

l95MF/I0T-G. V6:60j/IMT-G<2X62c\XG256.G[V0F m62W<YGCY562360/UT-G:95G

c:5Eg63H\Eg6<4<E_\/UT-G:95G

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58Basic Computer Network

1'��=>�7)&67FZZ Infrastructure <=G Access Point 3@'_&]:

8>c+���5�7Z5@W)�]c(3)4��d+�5�>7A6'_�4�_:1]+

�5�>�7(@e1A6'_\')'�Y�5@>�7+��� ^'18>c+���A7( Access point &]:3+f�( ?�_](8>c+���A7( Access point 7�1&]:3+f�(?4G g4_1'��=>�7)&67?)6A'4=6:( ���_1:6' Roaming

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59Basic Computer Network

&'()8+-& Channels - IEEE802.11 DS

o .> 3 *0-2@>,*0-2ABCC'D48+,EF.0)&5/@BH&BEo A'.'(I.> Access Points FJK 3 /BLMEN+OE@>,)J>5L&BEo P/08Q*0-24L'.I>,.> bandwidth @>,M*K2'E)@0'&BH 22 MHz.o 4L'.)(VL1-21K-.W8)@0'&BH 11 Mb/s

1 2 3 4 5 6 7 8 9 10 112400

2472241212 13

1

2

3

5

4

6

7

8

10

9

13

11

12

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60Basic Computer Network

Service Set Identifier (SSID)

• )#����� �% Service Set• !�-�&���,' ������'� !"#�*'��

• 6��&�� ��!)#���J� !*��!"#�*'��&�� �����+!�-�)#��!+ �����

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61Basic Computer Network

Wired Equivalent Privacy (WEP)

• !�#��!�#��&�� ����c�"������+.���,, Ac-Hoc

• &����,�%�e%�,,�,,�b+

• 6��!�#�� WEP 64 ,%&��'" �� 10 digit

• 6��!�#�� WEP 128 ,%&��'" �� 26 digit

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62Basic Computer Network

Local Area Network (LAN)

HubHubHubHub

ServerServerServerServer SwitchSwitchSwitchSwitch

InternetInternetInternetInternet

Access PointAccess PointAccess PointAccess PointHubHubHubHub

Wireless LAN (WLAN) as an Wireless LAN (WLAN) as an Wireless LAN (WLAN) as an Wireless LAN (WLAN) as an extension to wired LANextension to wired LANextension to wired LANextension to wired LAN

Ethernet ClientEthernet ClientEthernet ClientEthernet Client

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63Basic Computer Network

1. ����$����&C1)�7��E�,#/*� (����$�� PC 7-=��7\+) /F�:���G�$�&7��:-.:��E,

2(";�%#�

� 2.. PCMCIA :-.:��E, PCI "F�&��G�$�&7��:-" 2(+71,7-=�." PCI

Slot �������$����&C1)�7��E

� 2.. PCI Wireless /5$;&�7%��&5:��E, PCMCIA 2(+71,7-=�." PCI Slot

�������$����&C1)�7��E

� 2.. USB B��"C��E7 USB �������$����&C1)�7��E (2.. USB >+

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65Basic Computer Network

DELL

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66Basic Computer Network

Hewlett Packard

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67Basic Computer Network

IBM

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68Basic Computer Network

ACER

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69Basic Computer Network

Compaq

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70Basic Computer Network

Compaq

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71Basic Computer Network

ASUS

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72Basic Computer Network

THE ENDTHE END

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