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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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Congestion in a network occurs if user sends data into the network at a rate greater than that allowed by network resources. What are data grams?

These functions are handled by the IEEE The four aspects are, Error control Sequence control Loss control Duplication control 5. The control connection uses very simple rules of communication.

EC2352 Computer Networks MJ2014 Question Paper

T ransport layer delivery: Describe the three HDLC station types? What is meant by quality of service? Write short notes on LRC. Session layer, Presentation layer, Application layer. It contains synchronization, flag, flow and error control specifications necessary to move information from one place to another, as well as the physical address of the next station to receive and route a packet.

Like Ethernet, station communicates via a common bus. Write short notes on CRC. Physical, data link and network layers are the network support bnk they deal with the physical aspects of moving data from one device to another. The most quwstion and least expensive mechanism for error detection is the vertical redundancy check VRC often called a parity check. The network layer is responsible for the source-to-destination delivery of bahk across multiple network links.


A passive hub provides a simple physical connection between the attached devices.

Computer Networks EC notes – Annauniversity lastest info

Name four factors needed for a secure network. The client has three components: A logical circuit made between the sending and receiving computers.

A standard provides a model or basis for development to which everyone has agreed. 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 are the advantages of distributed processing? In this method, the same virtual circuit is provided between two uses on a continuous basis.

S frames — used only to transport control information, primarily data link layer and error controls. Define the following terms. MAC sub layer resolves the contention for the shared media. Where is the Menu? The quality of service defines a set of attributes related to the performance of the connection. So the simple strategy used by the hamming code to correct single bit errors must be redesigned to be applicable for multiple bit correction.

Uses two characters to identify a country as the last suffix. Instead, the receiver looks for changes from one level to another as its basis for recognition of 1s. In secret key, the same key is used by both parties. The combined station is one which acts either as a primary or a Secondary, depending upon the nature and direction of the transmission. One connection is used for data transfer, the other for control information.

There are 4 types of redundancy checks are used in data communication. The system must deliver data in a timely manner. 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 What is framing bits?


The sender can send before waiting for acknowledgment. What is the function of SMTP? What is token passing? Virtual circuit transmission is implemented in 2 formats.

Fixed-content documents that are created and stored in a server. Each layer in the sending machine adds its own information to the message it receives from the layer just above it and passes the whole package to the layer just below it.

Fiber with extremely small diameter that limits beams to a few angles, resulting in an almost horizontal beam. What does the electrical specification of EIA describe? What are the three criteria necessary for an effective and efficient network? It is the error detecting mechanism, which network a shorter group of bits or extra bits may be appended at the destination ex2352 each unit. The seven layers of the OSI model belonging to three subgroups.

Write short notes on FDDI.

Domain name space is divided into three different sections: Remove the restriction of a shared secret key between two entities. Mention the function of go-back N-ARQ. The transport layer ensures end-to-end reliable data transmission.

What are the responsibilities of network layer? Session, presentation and application layers are netwprks user support layers; they allow interoperability among unrelated software systems.