Computer Networking some important topics related few question is organized for MID term examination, Summer 2016 session. Here especially focused on ...
It's cover the Syllabus, Important Topics and few sample questions with answers of Computer Networking (CSE 313) subject for Final examination of Summer 2016. It's only a short guideline from my le...
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Social networks constitute the greatest global information platform on the Internet today. They have become an indispensable part of our daily lives as people spend more time socializing on the Internet. They have witnessed their collective fortunes
Computer Networks MID term Syllabus Review: SUMMER 2016 Syllabus: Chapter 1: Computer Networks and the Internet Chapter 2: Application Layer Chapter 4: Network Layer [Book: Computer Nerworking A Top-Down Approach By Kurose]
Important Topics: Chapter 1: Connection oriented and connection less network communication*** Switched Network (Circuit, Packet)** End to End Delay Chapter 2: DNS services and protocols*** HTTP: Cookies and WEB caching Email service and SMTP/POP protocols** FTP (port function) Telnet services and protocol*** Chapter 4: IPv4 packet header Default gateway* Routing table: Route Summarization*** Packet Forwarding*** Routing protocols Distance Vector: RIP*** Link State Broadcast and Network Address Public and private addresses*** Network Addresses Translator (NAT)** Subnetting with VLSM*** Troubleshooting the networks. Loopback** ping and traceroute commands.*** RJ 45 Connector Configuration: serial and Cross Cable
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Few Most Important Question: (a) Visit the site www.traceroute.org and perform traceroutes from two different cities in France to the same destination host in the United States. How many links are the same in the two traceroutes? Or, Pick a city in the United States, and perform traceroutes to two hosts, each in a different city in China. How many links are common in the two traceroutes? Do the two traceroutes diverge before reaching China? (b) Skype offers a service that allows you to make a phone call from a PC to an ordinary phone. This means that the voice call must pass through both the Internet and through a telephone network. Discuss how this might be done. (c) Why do HTTP, FTP, SMTP, and POP3 run on top of TCP rather than on UDP? (d) Print out the header of an e-mail message you have recently received. How many Received: header lines are there? Analyze each of the header lines in the message. (e) Consider an HTTP client that wants to retrieve a Web document at a given URL. The IP address of the HTTP server is initially unknown. What transport and application-layer protocols besides HTTP are needed in this scenario? (f) Suppose that your department has a local DNS server for all computers in the department. You are an ordinary user (i.e., not a network/system administrator). Can you determine if an external Web site was likely accessed from a computer in your department a couple of seconds ago? Explain. (g) Install and compile the Python programs TCP Client and UDP Client on one host and TCP Server and UDP Server on another host. i. Suppose you run TCPClient before you run TCPServer. What happens? Why? ii. Suppose you run UDPClient before you run UDPServer. What happens? Why? iii. What happens if you use different port numbers for the client and server sides? (h) What is the difference between routing and forwarding? (i) Compare and contrast the IPv4 and the IPv6 header fields. Do they have any fields in common? (j) Find out the Number of Subnet, Network, Hosts and Default Gateway from this configuration? 2
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(k) Suppose that this network is a datagram network. Show the forwarding table in router A, such that all traffic destined to host H3 is forwarded through interface 3.
(l) Consider a router that interconnects three subnets: Subnet 1, Subnet 2, and Subnet 3. Suppose all of the interfaces in each of these three subnets are required to have the prefix 223.1.17/24. Also suppose that Subnet 1 is required to support at least 60 interfaces, Subnet 2 is to support at least 90 interfaces, and Subnet 3 is to support at least 12 interfaces. Provide three network addresses that satisfy these constraints.
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(m) Compute the distance tables after the initialization step and after each iteration of a synchronous version of the distance-vector algorithm.
(n) Consider the below figure, assume all devices are using default configuration. How many subnets are required to address the topology that is shown? What is the reason behind?
(o) Consider the Figure, which device should be included in the network topology to provide Layer 2 connectivity for all LAN devices, provide multiple collision domains, and also provide a connection to the rest of the network? What are the major functions of that device?
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(p) Refer to the exhibit; A technician has been asked to test connectivity from PC1 to a remote network. Which action will indicate if there is remote connectivity?
(q) Refer to the exhibit; a technician is working on a network problem that requires verification of the router LAN interface. What address should be pinged from this host to confirm that the router interface is operational? Why?
