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.