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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What are the responsibilities of network layer?

EC Computer Networks MJ Question Paper | Knowledge Adda

IP address is the 3-bit number for representing a host or system in the network. The most important criteria are performance, reliability and security. Why is an application such as POP needed for electronic messaging? Write short notes on CRC generator. The network support layers are Physical layer, Data link layer and Network layer.


Stations may attempt to send data multiple times before a transmission makes it onto a link. What are the four aspects related to the reliable delivery of data?

How to request Study Material? Write short notes on LRC.

The private key is kept by the receiver. U frames — reserved for systems management. Physical, data link and network layers are the network support layers; they deal with the physical aspects of moving data from one device to another.


An active hub contains a repeater that regenerates the computef bit patterns before sending them out.

EC2352 Computer Networks MJ2014 Question Paper

Why are protocols needed? Packets in this technology are referred to as datagram.

What are the techniques used in multiplexing? Write short notes on CRC checker. In selective reject ARQ only the specific damaged or lost frame is retransmitted. Remove the restriction of a shared secret key between two entities.

What does the electrical specification of EIA describe? The stations are configured in 3 ways a Unbalanced configuration b Symmetrical configuration c Balanced configuration A Local Area Network LAN is a data communication system that allows a number of independent devices to communicate directly with each other in a limited geographic areaE Write the keys for understanding the distance vector routing.

When the size of the data unit received from the upper layer is too long for the network layer datagram or data link layer frame to handle, the transport protocol divides it into smaller usable blocks. What are the advantages of questtion processing? Domain Name System can map a name to an address and conversely an address to name.

EC Computer Networks – Question Bank and Important Questions – Edition

What is mean by data communication? What is the purpose of Domain Name System? Headers are added to the message at the layers 6,5,4,3, and 2. Domain name space is divided into three different sections: Like Ethernet, station communicates via a common bus.


Write short notes on FDDI. The connection is made after both computers do handshaking. The three HDLC station types are: In this method, the same virtual circuit is provided between two uses on a continuous basis. The reason is that the key is usually smaller.

Means that 2 or more bits in the data unit have changed from 1 to 0 or from 0 to 1. It is similar to that of signing transactions documents when you do business with a bank. A CRC checker functions exactly like a generator.

HTML is a netsorks language for specifying the contents and format of a web document. In network transactions, you can create an equivalent of an electronic or digital signature by the way you send data. Permutation is transposition in bit level.

These allow interoperability among unrelated software system. Fiber with extremely small diameter that limits beams to a few angles, resulting in an almost horizontal beam. What is token passing?