Cryptography and network security

1. In symmetric-key cryptography, the key locks and unlocks the box is

• same

•  shared

• private

• public

2. The keys used in cryptography are

• secret key

• private key

• public key

• all of them

3. Cryptography, a word with Greek origins, means

• corrupting data

• secret writing

• open writing

• closed writing

4. A transposition cipher reorders (permutes) symbols in a

• block of packets

• block of slots

•  

  block of signals

• block of symbols

Network Security provides authentication and access control for resources.

 

• true

• False

6. Which is not an objective of network security?

•  identification

•  authentication

•  access control

•  lock

7.The process of verifying the identity of a user

• authentication

•  identification

•  validation

•  verification

8. Which of these is a part of network identification?

• user id

• password

• otp

• fingerprint

9. The process of transforming plain text into unreadable text.

• decryption

•   encryption

• network security

• information hiding

10. An algorithm used in encryption is referred to as cipher.

• true

• false