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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Stations may attempt to send data multiple times before a transmission makes it onto a link. What are the three fundamental characteristics determine the effectiveness of nefworks data communication system?

P r i m ary-secondary relationship: A netaorks circuit made between the sending and receiving computers. SMTP provides mail exchange between users on the same or different computers. The connection is made after both computers do handshaking. The system must deliver data to the correct destination.

EC2352 Computer Networks MJ2014 Question Paper

A router gets its information about its neighbors by periodically sending them short greeting packets. A token netwofks passed among stations. What is meant by segmentation? If the neighborhood responds to the greeting as expected, it is assumed to be alive and functioning. G e ne r ic domain: Write the keys for understanding the distance vector routing. A CRC checker functions exactly like a generator. The receiver must follow these steps a The unit is divided into k section each of n bits.


What is framing bits? Effect of one wire on another is called as cross talk. In compufer key, the same key is used by both parties. So it is not recommended for large amounts of text. The transport layer creates a communication between the source and destination.

EC Computer Networks – Unit 1 PPT Lecture Notes – Vijay Edition

For computet, the entities must agree on a protocol. One portion of the IP address indicates a networking and the other represents the host in a network. S frames — used only to transport control information, primarily data link layer and error controls.

A frame consists of one complete cycle of time slots, including one or more slot dedicated to each sending device. In longitudinal redundancy check LRCa block of bits is divided into rows and a redundant row of bits is added to the whole block.

The comupter follows these steps a The units are divided into k sections each of n bits.

HTML is a computer language for specifying the contents and format of a web document. Write short notes on VRC.


Anna University ECE Computer Networks EC Notes

What is meant by congestion? What is the notfs between network layer delivery and the transport layer delivery? What is time-to-live or packet lifetime? What is selective reject ARQ? What is meant by segment? Security issues include protecting data from unauthorized access and viruses. A Character level encryption in which the characters retain their plaintext but the position of the character changes Raghavendra Reddy Malapati Page 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.

The system must deliver data in a timely manner. What are the duties of the transport layer? If there are no standards, difficulties arise. The control connection uses very simple rules of communication.

The dividing process is called segmentation. The user support layers are: Write short notrs on FDDI. The documents in the WWW can be grouped into three broad categories: