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Which of the following is/are a weakness in the Caesar cipher? (Select all that apply.)

Assume there is a six-face dice and all the outcomes are equally likely. When one tosses this dice once, the probability of getting either 1, 3 or 5 is ________.

The LCM (least common multiple) of 16 and 20 is        .

Which of the following number is valid for the probability of an event?

Which of the following security objectives aims at binding an identity to a subject?

In the Vigenère cipher, each letter in a secret key is associated with a numerical value (A=0, B=1, …, Z=25). If a letter from the secret key is ‘A’, what does the letter ‘A’ indicate?

Which of the following is true about integrity?

To implement cyclic shifts in a computer program, it is convenient to use               .

Which of the following is true about Vernam Cipher? (Select all that apply.)

What is true about the term ‘cipher’? (Select the best answer choice.)