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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IP address is the 3-bit number for representing a host or system in the network. The system must deliver data accurately. For communication, the entities must agree on a protocol. The reason is that the key is usually smaller. The receiver must follow these steps a The unit is divided into k section each of n bits. Creating a connection involves three steps: What is the difference between network layer delivery ec252 the transport layer delivery?

It is a system for sending messages to other computer users based on e- mail addresses. Secret Key algorithms are efficient: What is meant by segment? Raghavendra Reddy Malapati Page 8 6. The FECN bit is used to warn the receiver of congestion in the network. Mention the types of frames in HDLC. The BECN bit warns the sender of congestion in network.

Define a standard What are the network support layers and the user support layers? It is the popular mechanism for continuous transmission error control. Write short notes on VRC. MAC sub layer resolves the contention for the shared media. Raghavendra Reddy Malapati Page 3 Why are protocols needed? What are the responsibilities of data netwoks layer?

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For one million people to communicate, a half-billion secret keys are needed. A brouter is a single protocol or multiprotocol router that sometimes acts as a router and sometimes acts as a bridge. The dividing process is called segmentation. A token is passed among stations.

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. These bits are called framing bits.

Co-ordination across the nodes of a network is necessary for an efficient communication. The time-to-live determines the lifetime of a packet. The transport layer is responsible form source-to-destination delivery of the entire message. 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.

EC Computer Networks – Question Bank and Important Questions – Edition

Virtual circuit transmission is implemented in 2 formats. Data terminal equipment is a device that is an information source or an information nettworks. If you use large numbers the method to be effective. Routers relay packets among multiple interconnected networks. What is time-to-live or packet lifetime?

What is the purpose of Domain Name System? What are the three events involved in a connection? Instead, the receiver looks for changes from one level to another as its basis for recognition of 1s. What is meant by hop count? A router gets its information about its neighbors by periodically sending them short greeting packets.

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The sender can send before waiting for acknowledgment. If there are no standards, difficulties arise.

EC2352 Computer Networks MJ2014 Question Paper

It is similar to that of signing transactions documents when you do business with a bank. Congestion in a network occurs if user sends questioon into the network at a rate greater than that allowed by network resources.

What are the rules of no boundary-level masking? Two entities cannot just send bit streams to each other and expect to be understood. The computed is dedicated to the specific uses.

A CRC generator uses a modulo-2 division.

What is a virtual circuit? Each station may transmit only during its turn and may send only one frame during each turn. Describe the three HDLC station types?

How to request Study Material? Raghavendra Reddy Malapati Page 9 In distance vector routing, cost refer to hop count while in case of link state routing, cost is a weighted value based on a variety of factors such as security levels, traffic or the state of the link.