Computer Networks CN 16 Marks Important Questions And Answers

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Computer Networks CN 16 Marks Important Questions And Answers:-

Computer Networks 16 Marks Important Questions And Answers
Computer Networks 16 Marks Important Questions And Answers

Unit : 1 Overview of the Internet,Physical Layer,Data Link Layer

1.Explain how are OSI and ISO related to each other?
2.List the responsibilities of the data link layer in the Internet model?
3.Illustrate some of the factors that determine whether a communication system is a LAN or WAN?
4.Suppose a computer sends a frame to another computer on a bus topology LAN. The physical destination address of the frame is corrupted during the transmission. What happens to the frame? How can the sender be informed about the situation? Explain?
5.List three types of transmission impairment?
6.Distinguish between base band transmission and broadband transmission?
7.Explain the categories of networks?
8.Explain ISO/OSI Reference model with neat diagram?
9.Define topology and explain the topologies of the network?
10.Explain error detection and error correction techniques?
11.Explain the flow control mechanism?
12.Explain about HDLC?
13.Explain the timers and time registers in FDDI?
14.Explain error control mechanism?
15.Explain about SONET and Bridges?

16.Explain about Local Area Network (LAN).
17.Explain about Metropolitan Area Network (MAN).
18.Explain about Wide Area Network (WAN).
19.Explain the TCP/IP Reference Model.
20.What are the comparisons of the OSI and TCP/IP Reference Models?
21.Explain the problems in TCP/IP Reference Model.
22.Explain the problems in OSI Model and Protocols.
23. Explain about ARPANET.
24.Explain the architecture of the Internet.
25.Explain the ATM Reference Model.
26.Explain about client-server model.
27.Explain about Peer-to-peer Communication.
28.Explain about transmission technologies.
29.Differentiate Connection-Oriented and Connectionless Services.
30.Write short notes on interface, service and protocol.
31.Write a brief note on frame relay and X.25 networks.
32.What are the applications of computer networks?
33.Write any four reasons for using layered protocols.
34.With suitable example explain simplex, half-duplex and full-duplex communication.
35.Give a detailed description of the Novell NetWare IPX packet.
36.What are the various types of network topology? What are the implications of having different topology?

UNIT – II  Multiple Access Protocols

1.State the functions of MAC?
2.How performance is improved in CSMA/CD protocol compared to CSMA protocol? Explain?
3.How CSMA/CA differs from CSMA/CD. Explain in brief?
4.Explain in details about the access method and frame format used in Ethernet and token ring?
5.Discuss the MAC layer functions of IEEE 802.11?
6.Explain the working of carrier sense multiple access protocol?
7.Explain in details the types of bridges?
8.How a Token Ring LAN does operate? Discuss that can be used to set up wireless LAN’s?
9.List and briefly discuss the two different basic transmission technologies?
10.List the four basic network topologies and explain them giving all the Relevant features?
11.Explain the frame format, operation and ring maintenance feature of IEEE 802.5 MAC protocol?
12.Define key requirements and functioning of wireless LANs?
13.Explain why collision is an issue in a random access protocol but not in controlled access or channelizing protocols ?
14.Compare and contrast a controlled access protocol with a channelizing protocol?
15.Do we need a multiple access protocol when we use the local loop
of the telephone company to access the internet? Explain?

UNIT – III  Network Layer

1.Define switching? Explain Virtual circuit switching techniques?
2.Explain Packet switching technique in detail?
3.Explain Internet Protocol with the neat block diagram of IP header format?
4.Discuss about Address Resolution Protocol?
5.Explain about Internet Control Message Protocol?
6.Define BGP Protocol. Describe its routing functionality in detail?
7.Write short notes on a) X.25 b) ARP?
8.Explain the various congestion control mechanism in detail?
9.Explain the Link State routing algorithm with an example?
10.Describe the Routing Information protocol and Distance vector routing protocol?
11.Explain the Datagram delivery and Forwarding in Internet Protocol?
12.Explain the two approaches of packet switching techniques?
13.Define Routers and explain the type of routers?
14.Explain IP addressing method?
15.Describe two groups of multicast routing protocols?

UNIT - IV  Internet working, Transport Layer

1.Explain the real transport protocol of UDP and how will you calculate checksum in UDP?
2.Explain the TCP segment format?
3.Write short notes on Wrap around time (8)?
4.Describe the Adaptive retransmission policy in detail?
5.Explain the TCP Connection establishment and termination using Timeline diagram?
6.Describe the three way handshake protocol to establish the transport level connection?
7.Explain TCP state Transition diagram?
8.Explain the connection establishment?
9.Discuss about the TCP sliding window algorithm for flow control?
10.Explain congestion control algorithms in detail?
11.Explain leaky bucket and token bucket algorithm?
12.Explain UDP &TCP?
13.Explain congestion avoidance techniques in detail?
14.List major types of networks and explain?
15.Illustrate data units at different layers of the TCP / IP protocol suite?

UNIT – V  Application Layer

1.List different Data types used for Presentation formatting?
2.Define two methods of HTTP?
3.Define Big-endian format and little-endian format?
4.Describe the role of the local name server and the authoritative name server in DNS?
5.Define Domain Name Service (DNS) and explain in detail about the domain hierarchy and name servers?
6.Explain in detail about the working principles of Simple Network Management Protocol (SNMP) ?
7.Discuss how the Simple Mail Transfer Protocol (SMTP) is useful in electronic mail?
8.Describe in detail about the World Wide Web (WWW) ?
9.Explain the working principle of FTP in detail with neat diagram?
10.Explain the WWW in detail?
11.Differentiate between ARP and RARP?
12.Explain the specific purposes of the DNS, HTTP, SMB, and SMTP/POP application layer protocols?
13.Compare and contrast client/server with peer-to-peer data transfer over networks?
14.Explain three domains of the Domain Name Space?
15.Differentiate between primary server and secondary server? 

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