CN (BCA 6th)

SECTION- A

Data communications concepts: Digital and analog transmissions-Modem, parallel and serial,

synchronous and asynchronous, Modes of communication: Simplex, half duplex, full duplex, Concept of

multiplexing, De-multiplexing.

Types of Networks: LAN, MAN, WAN

Network Topologies: Bus, Star, Ring, Mesh, Tree, Hybrid

Communication Channels: Wired transmissions: Telephone lines, leased lines, switch line, coaxial

cables-base band, broadband, optical fiber transmission.

SECTION- B

Wireless Transmission: (Standards and Specification) Microwave transmission, Infrared transmission,

Laser transmission, Radio transmission and Satellite transmission and Blue Tooth, Frequency Spectrum.

Communication Switching Techniques: Circuit Switching, Message Switching, Packet Switching.

Network Reference Models: OSI Reference Model, TCP/IP Reference Model, Comparison of OSI and

TCP/IP Reference Models.

SECTION- C

Data Link Layer Design Issues: Services provided to the Network Layer, Framing, Error Control (error

detection and correction code), Flow Control, Data Link Layer in the Internet (SLIP, PPP).

Types of Multiplexing: FDM, TDM, CDMA

SECTION- D

MAC sub layer: CSMA/CD/CA, IEEE standards (IEEE802.3 Ethernet, Gigabit Ethernet, IEEE 802.4

Token Bus, IEEE 802.5 Token Ring)

The Network Layer: Design Issues, Routing Algorithms: Optimality Principle, Shortest Path Routing,

Congestion Control Policies, Concept of Internetworking.