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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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In public key, there are two keys: Token ring resolves this uncertainty by requiring that stations take turns sending data. If it dose not, a change is assumed to have occurred and the sending router then alerts the rest of the network in its next LSP. An active hub contains a repeater that regenerates the received bit patterns before sending them out.

I frames — used to transport user data and control information relating to user data. The sender and the receiver expect confidentiality. What are the four aspects related to the reliable delivery of data?

EC Computer Networks – Question Bank and Important Questions – Edition

In secret key, the same key is used by both parties. What are the duties of the transport layer? The three HDLC station types are: They act as a link between the upper layer protocols and the services provided by the lower gank. Means that 2 or questtion bits in the data unit have changed from 1 to 0 or from 0 to 1. Remove the restriction of a shared secret key between two entities.

Security issues include protecting data from unauthorized access and viruses. MAC sub layer resolves the contention for the shared media.



The control data added qudstion the beginning of a data is called headers. The private key is kept by the aanswers. The data connection needs more complex rules due to the variety of data types transferred. P r i m ary-secondary relationship: List the various ways of station configuration.

The third and most powerful of the redundancy checking techniques is the cyclic redundancy checks CRC CRC is based on binary division. Effect of one wire on another is called as cross talk. Anna University – B.

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.

Fixed-content documents that are created and stored in a server. This information is added in the form wwith headers or trailers. The protocol in the transport layer takes banm in the delivery of data from one application program on one device to an application program on another device.

EC2352 Computer Networks MJ2014 Question Paper

There are 3 types of HDLC frames. It is similar to that of signing transactions documents when you do business with a bank. What are the criteria used to evaluate transmission medium? Switched virtual circuit format is comparable conceptually to dial-up line in circuit switching. A passive hub provides a simple physical connection between the attached devices. Name four factors needed for a secure network.

Group the OSI layers by function. The effectiveness of the data communication system depends on three fundamental characteristics: There are 4 types of redundancy checks are used in data communication. What are headers and trailers and how do they get added and removed?

For each connection, the user can request quesion particular attribute each service class is associated with a set of attributes.


Virtual circuit transmission is implemented in 2 formats. The UA prepares the message, creates the envelope, and puts the message in the envelope.

Data terminal equipment is a device that is an information source or an information sink. All the devices share the link equally. The quality of service defines a set of attributes related to the performance of the connection. Creating a connection involves three steps: Fiber with extremely small diameter that limits beams to a few angles, resulting networkks an almost horizontal beam.

Mention the function of go-back N-ARQ. Specific responsibilities of data link layer include the following. 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 There are 2 methods have been developed to control flow of data across communication links.

EC Computer Networks MJ Question Paper | Knowledge Adda

What is the purpose of HTML? This redundancy may create delays of indeterminable length if the traffic is heavy. What is function of transport layer? E Civil 5th Semester Question A Character level encryption in which the asnwers retain their plaintext but the position of the character changes Raghavendra Reddy Malapati Page What are the network support layers and the user support layers? So the simple strategy used by the hamming code computet correct single bit errors must be redesigned to be applicable for multiple bit correction.

Write short notes on LRC.