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Computer Networks Year Question bank. Uploaded by . Check the answer (10) b. Bit stuff the . ec computer networks question bank. Uploaded by. PART-A(10 × 2 = 20). (Answer all the Questions). 1. Define a computer network. 2 . What is the similarity between transport layer and data link layer? 3. Define. ECCOMPUTER NETWORKS. ALL UNITS – QUESTION BANK answer. 28 . List out four differences between circuit-switched networks and packet-.

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At the receiving machine, each layer removes the data meant for it and passes the rest to the next layer. Newer Post Older Post Home. The network support layers are Physical layer, Data link layer and Network layer. Uses two characters to identify a country as the last suffix.


Data circuit-terminating equipment is a device used as an interface between a DTE and a network. The combined station is one which acts either as a primary or a Secondary, depending upon the nature and direction of the transmission. At the receiving machine, the headers or trailers attached to the data netwlrks at the corresponding sending layers are removed, and actions appropriate to that layer are taken. Raghavendra Reddy Malapati Page 11 The size of the data unit belonging to a single session are so small that several can fit together into a single datagram or frame, the transport protocol combines them into a single data unit.

What is a buffer? Name four factors needed for a secure network. What are the techniques used in multiplexing? P r i m ary-secondary relationship: The documents in the WWW can be grouped into three broad categories: The phenomenon related to the bending of light when it passes from one medium to another.


The BECN bit warns the sender of congestion in network. The three HDLC station types are: There are 4 types of redundancy checks are used in data communication. A Local Area Network LAN is a data communication ntworks that allows a number of independent devices to communicate directly with each other in a limited geographic areaE Write short notes on LRC.

Mention the nrtworks of flow control. Networke frame consists of one complete cycle of time slots, including one or more nteworks dedicated to each sending device.

EC2352 Computer Networks MJ2014 Question Paper

Creating a connection involves three steps: Otherwise, the received stream of bits is discarded and the dates are resent. Describe the three HDLC station types? In longitudinal redundancy check LRCa block of bits is divided into rows and a redundant row of bits is added to the whole block. What are the criteria used to evaluate transmission medium? Instead, the receiver looks for changes from one level to another as its basis for recognition of 1s.

What is a digital signature? What are the functions of a DTE? This information is added in the form of headers or trailers.

Computer Networks EC notes – Annauniversity lastest info

How will the congestion be avoided? A hamming code can be designed to correct burst errors of certain lengths. The receiver must follow these steps a The unit is divided into k section each of n bits.

Flow control refers to a set of procedures used to restrict the amount of data. What is piggy backing? Domain name space is divided into three different sections: What is the difference between a passive and an active hub?


What are the four internetworking devices? List out the user related attributes? The sender follows these steps a The units are divided into k sections each of n bits. In public key, there are two keys: The system must deliver data to the correct destination.

Why is an application such as POP needed for electronic messaging? What is meant by switched virtual circuit?

List out the available detection methods. Permutation is transposition in bit level. What are header and trailers and how do they get added and removed? What is Token Bus? In network transactions, you can create an equivalent of an electronic or digital signature by the way you send nrtworks. The sender can respond to this warning by simply reducing the data rate.

Define registered hosts according to their generic behavior, uses generic suffixes. The secondary station sends responses.

So it is not recommended for large amounts of text. Questiln the NRZ-L sequence, positive and negative voltages have specific meanings: If there are no standards, difficulties arise. Here a sequence of redundant bits, called the CRC remainder is appended to the end of data unit.