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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Here each entity can create a pair of keys, keep the private one, and publicly distribute the other one. A logical circuit made between the sending and receiving computers.


A frame consists ahswers one complete cycle of time slots, including one or more slot dedicated to each sending device. Mention the categories of flow control.

Each station may transmit only during its turn and may send only one frame during each turn. Physical, data link and network layers are the rc2352 support layers; they deal with the physical aspects of moving data from one device to another. P r i m ary-secondary relationship: It is a system for sending messages to other computer users based on e- mail addresses. Intel Corporation and Xerox. Switched virtual circuit format is comparable conceptually to dial-up line in circuit switching.

There are 3 types of HDLC frames. A CRC generator uses a modulo-2 division. Uses two characters to identify a country as the last suffix.

EC2352 Computer Networks MJ2014 Question Paper

Each receiving device has a block of memory called a buffer, reserved for storing incoming data until they are processed. One or more synchronization bits are usually added to the beginning of each frame.


In the NRZ-L sequence, positive and negative voltages have specific meanings: In networks, communication occurs between the entities in different systems. I frames — used to transport user data and control information relating to user data.

The quality of service defines a set of attributes related to the performance of the connection. One portion of the IP address indicates a networking and the other represents the host in a network. What is the purpose of HTML? Here a sequence of redundant bits, called the CRC remainder is appended to the end of data unit. Discuss the mode for propagating light along optical channels There are two modes for propagating light along optical channels, multimode and single mode.

EC Computer Networks MJ Question Paper | Knowledge Adda

Mention the types of frames in HDLC. Even when one packet represents just a place of a multipacket transmission, the network treats it although it existed alone.

A Character level encryption in which the characters retain their plaintext but the position of the character changes Raghavendra Reddy Malapati Page The system must deliver data in a timely manner.

If you use large numbers the method to be effective. IP address is the 3-bit number for representing a host or system in the network.

What is framing bits? Session layer, Presentation layer, Application layer. Mention the function of go-back N-ARQ. What is meant by segment?

Discuss the basic model of FTP. U frames — reserved for systems management. The combined station is one which acts either as a primary or a Secondary, depending upon the nature and direction of the transmission.

The client has three components: Means that 2 or more bits in the data unit have changed from 1 to 0 or from 0 to 1.


The data connection is made between the data transfer processes. Piggy backing means combining data to sent and acknowledgement of the frame received in one single frame. The sender follows these steps a The units are divided into k sections each of n bits. What is the function of FECN? We can use the shielded twisted pair cable or coaxial cable for transmission, which contains metal foil to reduce cross talk.

What is selective reject ARQ? The combining process is called concatenation. It supports data rates of Mbps and provides a high-speed alternative to Ethernet and token ring access method used here is token passing.

The sender and receiver are communicating with each other and are using some types of flow control at a higher level. At the receiving machine, each layer removes the data meant for it and passes the rest to the next layer.

A router gets its information about its neighbors by periodically sending them short greeting packets. The phenomenon witj to the bending of light when it passes from one medium to another.

The data must be transmitted using NRZ-L encoding.

The control data added to the beginning of a data is called headers. Raghavendra Reddy Malapati Page 2 9. Fiber with extremely small diameter that limits beams to a few angles, resulting in an almost horizontal beam. Raghavendra Reddy Malapati Page 3 The dividing process is called segmentation.