Question 1

In asymmetric key cryptography, the private key is kept by

Accepted Answer

A)  sender
B)  receiver
C)  sender and receiver
D)  all the connected devices to the network B

Question 2

The procedure to add bits to the last block is termed as

Accepted Answer

A)  decryption
B)  hashing
C)  tuning
D)  padding D

Question 3

________________________________________________________is the art & science of cracking the cipher-text without knowing the key.

Accepted Answer

A)  cracking
B)  cryptanalysis
C)  cryptography
D)  crypto-hacking B

Question 4

In same keys are implemented for encrypting as well as decrypting the information.

Accepted Answer

A)  symmetric key encryption
B)  asymmetric key encryption
C)  asymmetric key decryption
D)  hash-based key encryption

Question 5

An attack in which the user receives unwanted amount of e- mails.

Accepted Answer

A)  smurfing
B)  denial of service
C)  e-mail bombing
D)  ping storm

Question 6

Cryptanalysis is used __________________________________________

Accepted Answer

A)  to find some insecurity in a cryptographic scheme
B)  to increase the speed
C)  to encrypt the data
D)  to make new ciphers

Question 7

Conventional cryptography is also known as or symmetric-key encryption.

Accepted Answer

A)  secret-key
B)  public key
C)  protected key
D)  primary key

Exam 3: Cryptography and Security: Part B

In asymmetric key cryptography, the private key is kept by