Which of the following is a disadvantage of symmetric cipher?

A. Quick encryption
B. Less computational power
C. High level of security
D. Transmission of secret key

Which of the following is incorrect about symmetric key cryptography?

A. It uses common key for both encryption and decryption
B. It is a secret key cryptography
C. It uses single fixed length key for each algorithm
D. Symmetric key can be combined with asymmetric key to achieve more security

Which of the following is an advantage of symmetric cipher?

A. (n(n-1))/2 keys are required for n people
B. Sharing secret key over communication channel
C. Brute force attack for small key size
D. Quick encryption and decryption

Which of the following algorithm does not belong to symmetric key ciphers?

A. Des
B. Rc4
C. Aes
D. Diffie-hellman

What are the two broad categories of symmetric key cryptography?

A. Transposition and substitution
B. Classical and modern
C. Stream and block
D. Classical and block

What is the cipher text for the message “TAKE ME TO THE PARTY”, id Rail Fence technique is used with two rows?

A. Tkmtteataeeohpry
B. Takemetotheparty
C. Taekmeotthpearyt
D. Yrphoeeataettmkt

What is the cipher text for the text “GREET HER”, if Caesar Cipher is used(key=3)?

A. Kviiy liv
B. Kviix liv
C. Lwjjy mjw
D. Juhhw khu

Which of the following is not an alternative name for symmetric key cryptography?

A. Secret key cryptography
B. Public key cryptography
C. Conventional encryption
D. Private key cryptography

What technique is used by the TDMA to accomplish synchronization?

A. Preamble bits
B. Synchronization bytes
C. Guard bits
D. Start points

Which of the following is not a channelization protocol?

A. Frequency division multiple access
B. Time division multiple access
C. Code division multiple access
D. Bandwidth division multiple access