Deck 6: Cryptography and VPNS

Question 1

ECC encryption system is __________

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

Answer 1

asymmetric key encryption algorithm

Question 2

________function creates a message digest out of a message.

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

Answer 2

hash

Question 3

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

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

Answer 3

3

Question 4

A digital signature needs ____ system

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

Question 5

"Elliptic curve cryptography follows the associative property."

Question 6

ECC stands for

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

Question 7

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.

Question 8

The DSS signature uses which hash algorithm?

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

Question 9

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

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

Question 10

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

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

Question 11

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

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

Question 12

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

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

Question 13

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

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

Question 14

1. VPN is abbreviated as __________

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

Question 15

__________ provides an isolated tunnel across a public network for sending and receiving data privately as if the computing devices were directly connected to the private network.

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

Question 16

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

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 17

What types of protocols are used in VPNs?

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

Question 18

VPNs uses encryption techniques to maintain security and privacy which communicating remotely via public network.

Question 19

There are _________ types of VPNs.

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

Question 20

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

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

Question 21

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

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

Question 22

Site-to-Site VPN architecture is also known as _________

A)remote connection based vpns
B)peer-to-peer vpns
C)extranet based vpn
D)country-to-country vpns

Question 23

There are ________ types of VPN protocols.

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