7/23/2019 Study Guide Midterm F15

http://slidepdf.com/reader/full/study-guide-midterm-f15 1/1

Chapters 1, 2, 3

 Apart from Homework questions, study following questions:1.  Chapter 1: R11, R16, R18, R22, R23, R24,2.  Chapter 2: R1, R3, R4, R5, R6, R11, R12, R163.  Networking Overview

 

 What is a network?

 

 What services must a network provide? 

 What is addressing, routing?

   What is multiplexing and different multiplexing methods?

 

 What is delay? Bandwidth? Which matters more when?

   What are different sources of delay. How is each computed. What is RTT.

  Define and compute delay-bandwidth product

   What is the purpose of network layering? What are advantages / disadvantages of a layeredarchitecture?

   What are the layers in the OSI architecture? What are the layers in the TCP/IP architecture? What areexamples of protocols at these layers used in the Internet? Understand the functions of each layer.

4.   You should be able to

 

Describe and identify the layer  of all the major protocols we discussed in class.  Describe the process of sending email, identify/state the roles of different protocols involved

  Describe the process of obtaining ip address from url5.  Define, understand, contrast, and apply the following concepts:

a.  connectionless and connection-oriented protocolsb.  multiplexing and demultiplexingc.  HTTP 1.0 Vs. HTTP 1.1d.  Stateless and state-full protocolse.  in-band, out-of-band communication (see FTP)f. 

reliable vs. unreliable msg transferg.

  “complexity at network edge” h.  Persistent Vs. non-persistent connections

i. 

Circuit switching vs. packet switching6.   What does UDP provide in addition to those services contained in IP?7.   What are the transport layer services provided by UDP and TCP8.  For a given application, which Transport layer protocol (TCP, UDP) will you choose. Why?