CS8591 Computer Networks Anna University Important 2 Marks Questions with Answers

Download CS8591 Computer Networks Anna University Important 2 Marks Questions with Answers in PDF

Anna University

B.E / B.Tech Degree Examination
Fifth Semester
Computer Science and Engineering
CS8591 Computer Networks

(Common to Information Technology)
(Regulation 2017)

Time : Three hours

Maximum: 100 Marks

CS6511 -COMPUTER NETWORKS QUESTION BANK

TWO MARK QUESTIONS WITH ANSWERS 

UNIT 1

1. What are the three criteria necessary for an effective and efficient network?

The most important criteria are performance, reliability and security. Performance of the network

depends on number of users, type of transmission medium, the capabilities of the connected h/w and 

the efficiency of the s/w. Reliability is measured by frequency of failure, the time it takes a link to 

recover from the failure and the network’s robustness in a catastrophe. Security issues include 

protecting data from unauthorized access and viruses.

2. Group the OSI layers by function.

The seven layers of the OSI model belonging to three subgroups. Network support layers: 

Consisting of Physical, data link and network layers and they deal with the physical aspects of moving 

data from one device to another. User support layers: Consists of Session, presentation and 

application layers and they allow interoperability among unrelated software systems. The transport 

layer ensures end-to-end reliable data transmission

3. What are the features provided by layering?

1. It decomposes the problem of building a network into more manageable components. 

Rather than implementing a monolithic piece of software that does everything implement 

several layers, each of which solves one part of the problem.

2. It provides more modular design. To add some new service, it is enough to modify the 

functionality at one layer, reusing the functions provided at all the other layers.

4. What are the two interfaces provided by protocols?

* Service interface

* Peer interface

* Service interface-defines the operations that local objects can perform on the protocol.

* Peer interface-defines the form and meaning of messages exchanged between protocol peers to implement the communication service.

5. What is LAN?

A LAN is a common name used to describe a group of devices that share a geographic location. 

LAN is limited to single building or campus.

6. What is flow Control?

Flow control refers to a set of procedures used to restrict the amount of data. The sender can 

send before waiting for acknowledgment

Attachments:

PDF LINK: Click here to download CS8591 Computer Networks Anna University Important 2 Marks Questions with Answers

Scanned Copies: (Sample Pages)

Share This