PUNE INSTITUTE OF COMPUTER TECHNOLOGY, PUNE - 411043

Department of Electronics & Telecommunication

CN Question Bank Unit 1 to 3

ISO-OSI reference model, TCP/IP protocol suite and comparison between the two.

Functions of each layer Devices used at each layer Network topologies Compare hub, switch and bridge Information about PICT campus network LAN, WAN, MAN technologies and components used in it. LAN settings Information about NIC installation STP, UTP, Straight cable, cross cable, rollover cable specifications (data rate,

applications etc.) Which cables are used in LAN? Give details. What is a backbone network? Types of backbone network. Addressing in networking- logical, physical and port address specifications Classes of IP address with details Sub netting, super netting, subnet mask, CIDR notation NAT, PAT Public and private IP addresses ( with range of addresses) Circuit switching, packet switching in detail Ethernet standards Standard, fast, gigabit Ethernet. ARQ protocols Sliding window protocols sub layers of DLL with functions of each. Bit stuffing and byte stuffing techniques. HDLC and PPP in detail (frame formats) Virtual LAN concept Spanning tree protocol CSMA/CD and CSMA/CA in detail. TDMA, FDMA, CDMA in brief. Bluetooth and Zigbee protocol stack and comparison. Architecture of WLAN, Physical layer details DCF and PCF ( Important)

Department of Electronics & Telecommunication, Unit Test 2015_16Sem IPage 1 of 4

PUNE INSTITUTE OF COMPUTER TECHNOLOGY, PUNE - 411043

Department of Electronics & Telecommunication

Frame formats: IP header, HDLC frame format for I,U and S frames, 802.3, bluetooth

Unit IV: Network Layer

MODEL QUESTIONS

1. Explain network layer services.

2. List various protocols giving their significance in network layer.

3. With respect to mobile IP explain home address and care-of address?

4. Explain need of multicast addresses?

5. Explain two approaches (Source based tree and Group share tree approach) to

multicasting.

6. Explain IPv6 packet format.

7. Categories ICMPv6 packet format.

8. Explain distance vector (DV) routing algorithm.

9. Explain Path vector (PV) routing algorithm.

10.Explain Link state (LS) routing algorithm.

11.What are the advantages of ICMP over IP protocol? Explain ICMP with

general frame format.

12.List out various parameters taken into account for IGMP.

13.Compare IPV4 and IPV6.

14.Explain unicast, multicast routing.

15.For given IP address, how will you extract network address and host address?

Explain with suitable example?

Unit V: Transport LayerDepartment of Electronics & Telecommunication, Unit Test 2015_16Sem IPage 2 of 4

PUNE INSTITUTE OF COMPUTER TECHNOLOGY, PUNE - 411043

Department of Electronics & Telecommunication

MODEL QUESTIONS

1. Explain the functions of Transport layer.

2. Explain leaky bucket and token bucket concept to improve the QoS?

3. Define port number? Explain with neat diagram process to process delivery in

transport Layer

4. Compare TCP and UDP services for transport layer?

5. What are the parameters for Quality of service (QOS) How to congestion

problem is resolved?

6. Explain general services provided by UDP.

7. Explain general services provided by TCP.

8. Explain general services provided by SCTP.

9. Briefly explain UDP user datagram.

10.Explain TCP segment format.

11.Define typical application of UDP.

12.Differentiate connectionless and connection oriented protocol used in

transport layer.

13.Explain SCTP frame format.

14.Explain advantages of SCTP over TCP/UDP.

15.Explain Flow characteristics to improve the QOS?

Unit VI: Application Layer

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PUNE INSTITUTE OF COMPUTER TECHNOLOGY, PUNE - 411043

Department of Electronics & Telecommunication

MODEL QUESTIONS

1. What do you mean by DNS? Explain.

2. Explain email services in brief.

3. Explain substitution technique with an example.

4. Write a note on.

a. DNS.

b. HTTP.

5. Write a short note on.

a. TETNET.

b. FTP.

c. WWW.

6. Explain transposition technique with an example.

7. Explain RSA algorithm.

8. Differentiate symmetric and asymmetric key cryptography.

9. What are the main responsible of application layer? Explain briefly.

10.Explain symmetric cipher model.

11.Explain Public key cryptosystem model.

12.How symmetric key and public key is used in cryptography.

13.Explain OSI security services (X.800).

14.Briefly classify the security attack.

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