Answer it True or False only. No explanation. Thanks 1. Interruption is an attack on availability e.g. destruction of piece of hardware, cutting of a communication line or disabling of file management system. 2. Cryptography is the study of principles and methods of transforming an unintelligible message back into an intelligible message without knowledge of the key. 3. A block cipher processes the input and block of elements at a time, producing output block for each input block. 4. An unauthorized party not only gains access to but tampers with an asset is referred to as fabrication. 5. Passive attacks are in the nature of eavesdropping on, or monitoring of, transmissions. The goal of the opponent is to obtain information that is being transmitted.

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