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Identify the oldest phone hacking technique used by hackers to make free calls.
Cracking
Phishing
Phreaking
Spamming
Which one of the following techniques, is used to hide information inside a picture?
Bluetooth operations use
Readymade styles that can be used for a word document are called -
The computer system which uses a drum plotter is known as?
The command to reboot a computer is-
The main memory of a computer system is-
