Tuesday, 1 April 2014

Important questions in COMPUTER NETWORKS

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COMPUTER NETWORKS

UNIT I PHYSICAL LAYER

Layers in OSI model
TCP / IP protocol suite
Addressing
Guided and Unguided Transmission media
Switching
DSL

 UNIT II DATA LINK LAYER

Flow and error control
Protocols for Noiseless and Noisy Channels 
Multiple accesses
IEEE 802.11
Bluetooth
Virtual LANS
Virtual circuit networks

UNIT III NETWORK LAYER

IPv4, IPv6 addresses
ARP, RARP
Unicast, Multicast routing protocols.

UNIT IV TRANSPORT LAYER

User Datagram Protocol (UDP)
Transmission Control Protocol (TCP) 
Congestion Control 
Techniques to improve QoS.

UNIT V APPLICATION LAYER

Domain Name System (DNS) 
E-mail
WWW
Cryptography
Symmetric key and Public Key algorithms 
Digital signature


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