Q. The main reason to encrypt a file is to ______________.

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Q. A public key encryption system

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Q. A sender S sends a message m to receiver R, which is digitally signed by S with its private key. In this scenario, one or more of the following security violations can take place. (I) S can launch a birthday attack to replace m with a fraudulent message. (II) A third party attacker can launch a birthday attack to replace m with a fraudulent message. (III) R can launch a birthday attack to replace m with a fraudulent message.

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Q. In a RSA cryptosystem a particular A uses two prime numbers p = 13 and q =17 to generate her public and private keys. If the public key of Ais 35. Then the private key of A is ____________.

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Q. Which of the following are forms of malicious attack ?

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Q. What are common security threats ?

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Q. From the following, which is not a common file permission ?

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Q. Which of the following is a good practice ?

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Q. What is not a good practice for user administration ?

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Q. Which of the following is least secure method of authentication ?

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Q. Which of the following is a strong password ?

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Q. Why is one time password safe ?

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Q. What does Light Directory Access Protocol (LDAP) doesn’t store ?

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Q. What is characteristic of RADIUS system ?

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Q. Which happens first authorization or authentication ?

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Q. What is characteristics of Authorization ?

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Q. What forces the user to change password at first logon ?

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Q. What is not a best practice for password policy ?

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Q. What is breach of integrity ?

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Q. What is breach of confidentiality ?

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