10144EC603 COMPUTER NETWORKS L T P C-3 0 0 3

 

UNIT I PHYSICAL LAYER 9

Data Communications – Networks - Networks models – OSI model – Layers in OSI model– TCP / IP protocol suite – Addressing – Guided and Unguided Transmission media Switching: Circuit switched networks – Data gram Networks – Virtual circuit networks Cable networks for Data transmission: Dialup modems – DSL – Cable TV – Cable TV for Data transfer.

UNIT II DATA LINK LAYER 10

Data link control: Framing – Flow and error control –Protocols for Noiseless and Noisy

Channels – HDLC Multiple access: Random access – Controlled access

Wired LANS : Ethernet – IEEE standards – standard Ethernet – changes in the standard – Fast Ethernet – Gigabit Ethernet .Wireless LANS : IEEE 802.11–Bluetooth.

Connecting  LANS: Connecting devices - Backbone networks - Virtual LANS

Virtual circuit networks: Architecture and Layers of Frame Relay and ATM.

UNIT III NETWORK LAYER 9

Logical addressing: IPv4, IPv6 addresses

Internet Protocol: Internetworking – IPv4, IPv6 - Address mapping – ARP, RARP,

BOOTP, DHCP, ICMP, IGMP, Delivery - Forwarding - Routing – Unicast, Multicast

routing protocols.

UNIT IV TRANSPORT LAYER 8

Process-to-Process delivery - User Datagram Protocol (UDP) – Transmission Control

Protocol (TCP) – Congestion Control – Quality of services (QoS) – Techniques to

improve QoS.

UNIT V APPLICATION LAYER 9

Domain Name System (DNS) – E-mail – FTP – WWW – HTTP – Multimedia Network

Security: Cryptography – Symmetric key and Public Key algorithms - Digital signature –

Management of Public keys – Communication Security – Authentication Protocols.

Total = 45 PERIODS

TEXT BOOKS

1. Foruzan, B.A., “Data communication and Networking”, TMH, 2006. Unit I - IV

2. Prakash C.Gupta , “Data Communications and Computer Networks” PHI , 2009

REFERENCES

1. Tannenbaum, A.S., “Computer Networks”, 4th Edition, PHI, 2003.

2. Wayne Tomasi, “Introduction to Data Communication and Networking”, 1/e, Pearson

Education.

3. Kurouse, J.F. and Rouse W., “Computer Networking: A Topdown Approach Featuring”,4/e Pearson Education, 2007.

4. Greg Tomshon, Ed Tittel, David Johnson. “Guide to Networking Essentials”, fifth

edition, Thomson India Learning, 2007.

5. William Stallings, “Data and Computer Communication”, Eighth Edition, Pearson

Education, 2000.