EC2352 COMPUTER NETWORKS Lecture Notes for BME - Seventh (7th) semester -by R.Anirudhan

EC2352 COMPUTER NETWORKS Lecture Notes for BME - Seventh (7th) semester


EC2352 Lecture Notes

Syllabus :


UNIT I PHYSICAL LAYER
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
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
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
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
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.


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