B.TECH - Semester 8 computer communications Question Paper 2021 (feb)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- What is the importance of the transmission media in the OSI model?
- Describe the goals of multiplexing.
- What is the importance of cladding in fiber optic cable?
- How does Address Resolution Protocol (ARP) works?
- What is sub-netting?
- Mention the functions of router. bridge and switch.
- How does Spanning Tree Protocol world?
- What do you mean by Wireless LANs?
- What is Multi-Level Security (MLS) model?
- Write short note on Message Integrity Protocol. ( $10 \times 2=20$ Marks) P.T.O. Answer any one question from each Module, 20 Marks each.
- (a) Differentiate between TCP and UDP.
- (b) Explain different layers of TCP/IP reference model and its protocols.
- (a) What are sliding window protocols? Explain Go-Back-N protocol.
- (b) What is congestion control? Briefly explain any two congestion control mechanisms?
- (a) Are ICMP messages delivered reliably? If so, briefly explain the mechanism. If not, give a reason why not?
- (b) What are the salient features of Ipv6?
- (c) Briefly explain the error reporting mechanism by routers to report delivery or routing problems to original mechanism.
- (a) Explain Link State Routing algorithm with an example.
- (b) Explain briefly forwarding techniques. Explain three different forwarding techniques.
- (a) Describe two ways to address the framing problems in Data Link Layer. 10
- (b) Explain the error detection and correction techniques in Data Link Layer.
- (a) What is Spanning Tree? Explain with an example. ..... 10
- (b) With flow diagram, explain the procedure for CSMA/CD protocol. ..... 6
- (c) Differentiate between MAC address and IP address. ..... 4 Module - IV
- (a) What is the need for security services at transport layer of Internet Protocol?8
- (b) Explain the four protocols defined by Secure Socket Layer. ..... 12 OR
- (a) Explain in detail about Intrusion Detection Systems. ..... 10
- (b) How does a firewall work? Also explain different types of fire walls. ..... 10