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Class lecture notes for third Year,sixth semester Computer Networks (Subject Code: EC) is available here in PDF formats for you to. In recent years, the network that is making significant impact in our day-to-day life is the Computer network. By computer network we mean an interconnected set. EC / EC62 / EC Computer Networks Complete Notes-Unit Wise ECE 6th Semester Regulation | BE Electronics and Communication.

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A hamming code can be designed to correct burst errors of certain lengths. They Route packets from one network to any of a number of potential destination networks on internet routers operate in the physical, data link and network layer of OSI model. The receiver must follow these steps a The unit is divided into k section each of n bits. Creating a connection involves three steps: These networke are handled by the IEEE Fiber with extremely small diameter that limits beams to a few angles, resulting in an almost horizontal beam.

So it is not recommended for large amounts of text. What is meant by Permanent virtual circuit? The combining process is called concatenation.

How the packet cost referred in distance vector and link state routing? These bits are called framing bits. The data connection needs more complex rules due to the variety of data types transferred. Mention the types of frames in HDLC. 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. Means that 2 or more bits in the data unit have changed from 1 to 0 or from 0 to 1.

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Remove the restriction of a shared secret key between two entities.

Newer Post Older Post Home. In datagram approach, each packet is treated independently from all others.

EC2352 – Computer Networks Important Questions

What is meant by hop count? What is meant by brouter? The services provided by the transport layer End-to- end delivery Addressing Reliable delivery Flow control Multiplexing 3. The most important criteria are performance, reliability and security.

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A Local Area Network LAN is a data computter system that allows a number of independent devices to communicate directly with each other in a limited geographic areaE The data must be transmitted using NRZ-L encoding.

A program to be run at the client side. What are the rules of no boundary-level masking?

What is token passing? The UA prepares the message, creates the envelope, and puts the message in the envelope. What is meant by switched virtual circuit?

Raghavendra Reddy Malapati Page 2 9. MAC sub layer resolves the contention for the shared media. 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.

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The sender can respond to this warning by simply reducing the data rate.

EC COMPUTER NETWORKS lecture notes | for ECE – VII semester | by han

What are the four aspects related to the reliable delivery of data? A router gets nnetworks information about its neighbors by periodically sending them short greeting packets.

In the NRZ-L sequence, positive and negative voltages have specific meanings: IP address is the 3-bit number for representing a host or system notex the network. Define registered hosts according to their generic behavior, uses generic suffixes. What are the duties of the transport layer?

Even when one packet represents just a place of a multipacket transmission, the network treats it although it existed alone. The control connection is made between the control processes. It is a system for sending messages to other computer users based on e- hotes addresses. Specific responsibilities of data link layer include the following.

The public key is announced to the public. What is the function of SMTP?