Question 1

The main difference in MACs and digital signatures is that, in digital signatures the hash value of the message is encrypted with a user's public key.

Accepted Answer

A) True 
 B)False  False

Question 2

"Elliptic curve cryptography follows the associative property."

Accepted Answer

A) True 
 B)False

Question 3

1. VPN is abbreviated as __________

Accepted Answer

A)  visual private network
B)  virtual protocol network
C)  virtual private network
D)  virtual protocol networking

Question 4

ECC encryption system is __________

Accepted Answer

A)  symmetric key encryption algorithm
B)  asymmetric key encryption algorithm
C)  not an encryption algorithm
D)  block cipher method

Question 5

The _________ attack can endanger the security of the Diffie-Hellman method if two parties are not authenticated to each other.

Accepted Answer

A)  man-in-the-middle
B)  ciphertext attack
C)  plaintext attack
D)  none of the above

Question 6

_________ type of VPNs are used for home private and secure connectivity.

Accepted Answer

A)  remote access vpns
B)  site-to-site vpns
C)  peer-to-peer vpns
D)  router-to-router vpns

Question 7

Which of the statements are not true to classify VPN systems?

Accepted Answer

A)  protocols used for tunnelling the traffic
B)  whether vpns are providing site-to-site or remote access connection
C)  securing the network from bots and malwares
D)  levels of security provided for sending and receiving data privately

Question 8

There are ________ types of VPN protocols.

Accepted Answer

A)  3
B)  4
C)  5
D)  6

Question 9

Which types of VPNs are used for corporate connectivity across companies residing in different geographical location?

Accepted Answer

A)  remote access vpns
B)  site-to-site vpns
C)  peer-to-peer vpns
D)  country-to-country vpns

Question 10

What types of protocols are used in VPNs?

Accepted Answer

A)  application level protocols
B)  tunnelling protocols
C)  network protocols
D)  mailing protocols

Question 11

he ________ method provides a one-time session key for two parties.

Accepted Answer

A)  diffie-hellman
B)  rsa
C)  des
D)  aes

Question 12

Extensions to the X.509 certificates were added in version ____

Accepted Answer

A)  1
B)  2
C)  3
D)  4

Question 13

There are _________ types of VPNs.

Accepted Answer

A)  3
B)  2
C)  5
D)  4

Question 14

What is the size of the RSA signature hash after the MD5 and SHA-1 processing?

Accepted Answer

A)  42 bytes
B)  32 bytes
C)  36 bytes
D)  48 bytes

Question 15

In the handshake protocol which is the message type first sent between client and server ?

Accepted Answer

A)  server_hello
B)  client_hello
C)  hello_request
D)  certificate_request

Question 16

________function creates a message digest out of a message.

Accepted Answer

A)  encryption
B)  decryption
C)  hash
D)  none of the above C

Question 17

ECC stands for

Accepted Answer

A)  elliptic curve cryptography
B)  enhanced curve cryptography
C)  elliptic cone cryptography
D)  eclipse curve cryptography

Question 18

One commonly used public-key cryptography method is the ______ algorithm.

Accepted Answer

A)  rss
B)  ras
C)  rsa
D)  raa

Question 19

A digital signature needs ____ system

Accepted Answer

A)  symmetric-key
B)  asymmetric-key
C)  either (a)  or (b) 
D)  neither (a)  nor (b)  B

Question 20

The DSS signature uses which hash algorithm?

Accepted Answer

A)  md5
B)  sha-2
C)  sha-1
D)  does not use hash algorithm

Exam 6: Cryptography and VPNS

The main difference in MACs and digital signatures is that, in digital signatures the hash value of the message is encrypted with a user's public key.

Correct AnswerverifiedFalse

"Elliptic curve cryptography follows the associative property."

Correct AnswerverifiedShow Answer

1. VPN is abbreviated as __________

Correct AnswerverifiedShow Answer

ECC encryption system is __________

Correct AnswerverifiedShow Answer

The _________ attack can endanger the security of the Diffie-Hellman method if two parties are not authenticated to each other.

Correct AnswerverifiedShow Answer

_________ type of VPNs are used for home private and secure connectivity.

Correct AnswerverifiedShow Answer

Which of the statements are not true to classify VPN systems?

Correct AnswerverifiedShow Answer

There are ________ types of VPN protocols.

Correct AnswerverifiedShow Answer

Which types of VPNs are used for corporate connectivity across companies residing in different geographical location?

Correct AnswerverifiedShow Answer

What types of protocols are used in VPNs?

Correct AnswerverifiedShow Answer

he ________ method provides a one-time session key for two parties.

Correct AnswerverifiedShow Answer

Extensions to the X.509 certificates were added in version ____

Correct AnswerverifiedShow Answer

There are _________ types of VPNs.

Correct AnswerverifiedShow Answer

What is the size of the RSA signature hash after the MD5 and SHA-1 processing?

Correct AnswerverifiedShow Answer

In the handshake protocol which is the message type first sent between client and server ?

Correct AnswerverifiedShow Answer

________function creates a message digest out of a message.

Correct AnswerverifiedC

ECC stands for

Correct AnswerverifiedShow Answer

One commonly used public-key cryptography method is the ______ algorithm.

Correct AnswerverifiedShow Answer

A digital signature needs ____ system

Correct AnswerverifiedB

The DSS signature uses which hash algorithm?

Correct AnswerverifiedShow Answer

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C

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