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

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

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

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

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

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

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

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

A. Data security
B. Cloud storage
C. User privacy
D. Bitcoin’s block chain

A. True
B. False
C.
D.