B.TECH - Semester 8 computer communications Question Paper 2013 (apr)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- What is multiplexing and demultiplexing in transport layer?
- What are the main advantages of Fiber Optic Cable over UTP?
- Differentiate between static routing algorithms and dynamic routing algorithms.
- Define Distance-Vector Routing Protocol with one example.
- Mention the importance of Autonomous System? Give the name of a protocol that handles routing within a single Autonomous System.
- What do you mean by redundancy? What are three types of redundancy checks used in data communication?
- Why do we need a bridge/switch?
- What are the desirable properties of secure communication?
- Briefly explain Multilevel Security models.
- What is MD5 hashing algorithm? Answer any one question from each module. Each carries 20 marks.
- (a) Briefly explain functions of OSI layers with neat diagram. 10
- (b) Are there any alternative models to the OSI model? If yes, define it. 10 OR
- Explain the causes and the costs of Congestion for the following : Scenarios : 1 : Two Senders and a Router with Infinite Buffers 2 : Two Senders and a Router with Finite Buffers. 20 Module - II
- Explain Link-State (LS) Routing Algorithm. 20 OR
- Describe the working of Inter-AS Routing in the Internet with a suitable protocol example. 20 Module - III
- (a) In which layer is ARP protocol used? How does address resolution protocol work? 10
- (b) How does CSMA/CA work in WIFI? 10 OR
- (a) Describe Bit-Oriented Protocols (HDLC) and Clock-Based Framing (SONET), 10
- (b) Explain Spanning Tree algorithm. 10 N - 5747
- (a) Explain the Access Control Policies in the operation of a firewall and also specify any two limitations of a Firewall.
- (b) Briefly explain how to send a digitally signed document with an example.
- Write notes on : (a) SSH
- Write notes on : (b) SSL
- Write notes on : (c) TLS
- Write notes on : (d) IPSec.