(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 .

Computer networks are essential for sharing resources, information, and facilitating communication. 

i) Packet switching involves breaking data into packets for ________ _____ _____ _________ ___ _______ ____ ____.
_______ _____ ______ ______ ________ __________ ______.
___ ________ ______ __________ ______.
________ ____ _____ _________ ___ ________ ________ ____.
____ ______ ________ ___ _____ _________.
___ _______ ____ __________ ________ _____ ________ ________ _________ ________.
____ ______ ____ ____ ___ ________ _____ ________ _____ ________ _____ ________.
_______ _____ ______ _____ ______ ____.
_____ __________ ________ _______ _______ ______ __________ _____ ____ _____ _____ ____.
____ ______ _____ ______ __________ ______.
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