Chp 4

Which term describes the technology that protects software from unauthorized access or modification?

• copyright

• trademark

• watermarking

• access control

Which type of cipher is able to encrypt a fixed-length block of plaintext into a 128-bit block of ciphertext at any one time?

Which three protocols use asymmetric key algorithms? (Choose three)

• Secure Shell (SSH)

• Pretty Good Privacy (PGP)

• Secure Sockets Layer (SSL)

• Advanced Encryption Standard (AES)

What term is used to describe concealing data in another file such as a graphic, audio, or other text file?

Which asymmetric algorithm provides an electronic key exchange method to share the secret key?

• WEP

• DES

• RSA

• Diffie-Hellman (DH)

What encryption algorithm uses one key to encrypt data and a different key to decrypt data?

• symmetric

• asymmetric

• transposition

• one-time pad

Which three devices represent examples of physical access controls? (Choose three)

• locks

• firewalls

• swipe cards

• video cameras

What encryption algorithm uses the same pre-shared key to encrypt and decrypt data?

• hash

• symmetric

• asymmetric

• one-time pad

A warning banner that lists the negative outcomes of breaking company policy is displayed each time a computer user logs in to the machine. What type of access control is implemented?

• detective

• deterrent

• masking

• preventive

What type of cipher encrypts plaintext one byte or one bit at a time?