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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