Question

(a) Why do you need computer Networks? Explain the following terms in the context of
computer networks:
i) Packet switching
ii) Simplex transmission
iii) Unguided Media/Channels
iv) Optical Fiber​

Answer 1

1) packet switching

Answers

Packet switching is the transfer of small pieces of data across various networks. These data chunks or “packets” allow for faster, more efficient data transfer. Often, when a user sends a file across a network, it gets transferred in smaller data packets, not in one piece.

2) simplex transmission

Answer

Simplex communication is a communication channel that sends information in one direction only. ... A duplex communication channel requires two simplex channels operating in opposite directions. For example, in TV and radio broadcasting, information flows only from the transmitter site to multiple receivers.

3) unguided media/channels

Answer

Simplex communication is a communication channel that sends information in one direction only. ... A duplex communication channel requires two simplex channels operating in opposite directions. For example, in TV and radio broadcasting, information flows only from the transmitter site to multiple receivers.

4) optical fiber

Answers

Simplex communication is a communication channel that sends information in one direction only. ... A duplex communication channel requires two simplex channels operating in opposite directions. For example, in TV and radio broadcasting, information flows only from the transmitter site to multiple receivers.