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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List out the steps followed is checksum checker side. The data connection is made between the data transfer processes. Data communication is the exchange of data in the form of 1s and 0s between two devices via cmputer form of transmission medium such as a wire cable. What are the responsibilities of network layer?

What is a virtual circuit?

What are headers and trailers and how do they get added and removed? Group the OSI layers by function.

EC2352 Computer Networks MJ2014 Question Paper

The protocol in the transport layer takes care in the delivery of data from one application program on one device to an application program on another device. Raghavendra Reddy Malapati Page 12 S frames — used only to transport control information, primarily data link layer and error controls. It is similar to that of signing transactions documents when you do business with a bank.

Raghavendra Reddy Malapati Page 2 9. List the various ways of station configuration. Uses two characters to identify a country as the last suffix. Raghavendra Reddy Malapati Page 8 6. The phenomenon related to the bending of light when it passes from one medium to another. All the devices share the link equally.


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

Why are protocols needed? 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 Networjs model. At the receiving machine, each layer removes the data meant for it and passes the rest to the next layer. Define registered hosts according to their generic behavior, uses generic suffixes. For one million people to communicate, a half-billion secret keys are needed.

It allows additional text to include codes that define fonts, layouts, embedded graphics and hypertext links. A brouter is a single protocol or multiprotocol router that sometimes acts as a router and sometimes acts as a bridge. What are the two types ccomputer implementation formats in virtual circuits? The documents in the WWW can be grouped into three broad categories: We can use the shielded twisted pair cable or coaxial cable for transmission, which contains metal foil to reduce cross talk.

Write short notes on CRC. Why are standards needed? Token Bus is a physical bus that operates as a logical ring using tokens.

Permutation is transposition in bit level. Distinguish between peer-to-peer relationship and a primary-secondary relationship.

G e ne r ic domain: 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 Newer Post Older Post Home. A CRC generator uses a modulo-2 division. A hamming code can be designed to correct burst errors of certain lengths.

U frames — reserved for systems management. As the time-to-live field is generated, each packet is marked with a lifetime; usually the number of hops that are allowed before a packet is considered lost and accordingly, destroyed.


EC2352 – Computer Networks Important Questions

A frame consists of one complete cycle of time slots, including one or more slot dedicated to each sending device. Combined station sends both commands and responses Define the following terms. Headers are added to the message at the layers 6,5,4,3, and 2. Discuss the basic model of FTP.

After the connection, all packets follow the same route and arrive in sequence. What is time-to-live or packet lifetime? The BECN bit warns the sender of netwroks in network.

EC Computer Networks Lecture Notes – NPR Edition

One portion of the IP address indicates a networking and the other represents the host in a network. This redundancy may create delays of indeterminable length if the traffic is heavy. This information is added in the form of headers or trailers. Write short notes on CRC generator. What are header and trailers and how do they get added and removed? Mention the types of errorsE There are 2 types of errors a Single-bit error. In networks, communication occurs between the entities in different systems.

It is the error detecting mechanism, which means a shorter group of bits or extra bits may be appended at the destination of each unit. Physical, data link and network layers are the network support layers; they deal with the physical aspects computef moving data from one device to another.

What are data grams?