A computer is something that takes INPUT, PROCESSES it and OUTPUTS result. On occasions computers will have STORAGE as well.

INPUT devices - Devices that allow a user to INPUT data into the system TO BE PROCESSED- Data may be image, video, sound as well as text and moti...

What you need to know:

What is a network, PAN, WAN, LAN.

Advantages and Disadvantages of a network

Hardware

Wires and Wireless

Topology (bus and star)

Protocols (HTTP, SMTP, TCP/IP UDP, FTP, IMAP, POP, )

TCP/IP layers

The Internet

IP and MAC addresses.

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