Question 1

There are three handshaking stages when two parties communicate through a cryptographic system standard.

Accepted Answer

A) True 
 B)False

Question 2

Digital signatures are used much more often than are HMACs.

Accepted Answer

A) True 
 B)False

Question 3

A key is a random strong of 40 to 4,000 bits.

Accepted Answer

A) True 
 B)False

Question 4

IPsec operates at the ________ layer.

Accepted Answer

A)   application
B)   transport
C)   internet
D)   secure socketsE) All of the above
F) A) and B)

Question 5

There are no SSL/TLS gateway standards.

Accepted Answer

A) True 
 B)False

Question 6

All browsers are SSL/TLS-aware.

Accepted Answer

A) True 
 B)False

Question 7

________ can deliver very long keys to communication partners.

Accepted Answer

A)   Diffie-Hellman key exchange
B)   Public key encryption
C)   One-time key exchange
D)   Quantum key distributionE) B) and C)
F) A) and D)

Question 8

Auguste Kerckhoffs proved that as long as the ________, the two parties will still have confidentiality.

Accepted Answer

A)   both the key and the cipher code are kept secret
B)   the key is made available and the cipher is kept secret
C)   the key is kept secret
D)   the cipher is kept secretE) A) and B)
F) A) and C)

Question 9

________ is an independent and trusted source of information about public keys of true parties.

Accepted Answer

A)   A message digest
B)   Verification
C)   A digital signature
D)   A certificate authorityE) None of the above
F) A) and D)

Question 10

The use of public key encryption to do keying is widespread.

Accepted Answer

A) True 
 B)False

Question 11

A cipher is a general way to encrypt information, while codes are limited.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following is efficient in regard to processing power and RAM requirements to be used on many different types of devices?

Accepted Answer

A)   3DES
B)   DES
C)   Triple DES
D)   AESE) B) and C)
F) A) and D)

Question 13

A ________connects a single client over an untrusted network to a single server.

Accepted Answer

A)   host-to-host VPN
B)   remote access VPN
C)   one-time key
D)   site-to-site VPNE) All of the above
F) None of the above

Question 14

Which are the two widely used public key encryption ciphers?

Accepted Answer

A)   RSA and ECC
B)   ECC and DES
C)   RSA and AES
D)   DES and 3DESE) B) and C)
F) All of the above

Question 15

Quantum key distribution creates a one-time key.

Accepted Answer

A) True 
 B)False

Question 16

________ is 56 bits long.

Accepted Answer

A)   The DES key
B)   An RSA key
C)   A symmetric key
D)   A hashE) None of the above
F) All of the above

Question 17

A(n)  ________ occurs when an attacker intercepts an encrypted message and transmits it again later.

Accepted Answer

A)   replay attack
B)   security through obscurity attack
C)   evil twin attack
D)   man-in-the-middle attackE) A) and C)
F) None of the above

Question 18

In transposition ciphers, letters are changed but their position is not.

Accepted Answer

A) True 
 B)False

Question 19

A remote access VPN connect a single remote PC over an untrusted network to a site network.

Accepted Answer

A) True 
 B)False

Question 20

IPsec transport mode gives host-to-host security.

Accepted Answer

A) True 
 B)False

Exam 3: Cryptography

A ________connects a single client over an untrusted network to a single server.

Correct AnswerverifiedShow Answer

IPsec transport mode gives host-to-host security.

Correct AnswerverifiedShow Answer

Which of the following is efficient in regard to processing power and RAM requirements to be used on many different types of devices?

Correct AnswerverifiedShow Answer

All browsers are SSL/TLS-aware.

Correct AnswerverifiedShow Answer

A remote access VPN connect a single remote PC over an untrusted network to a site network.

Correct AnswerverifiedShow Answer

________ is 56 bits long.

Correct AnswerverifiedShow Answer

A(n) ________ occurs when an attacker intercepts an encrypted message and transmits it again later.

Correct AnswerverifiedShow Answer

________ is an independent and trusted source of information about public keys of true parties.

Correct AnswerverifiedShow Answer

Auguste Kerckhoffs proved that as long as the ________, the two parties will still have confidentiality.

Correct AnswerverifiedShow Answer

The use of public key encryption to do keying is widespread.

Correct AnswerverifiedShow Answer

________ can deliver very long keys to communication partners.

Correct AnswerverifiedShow Answer

In transposition ciphers, letters are changed but their position is not.

Correct AnswerverifiedShow Answer

IPsec operates at the ________ layer.

Correct AnswerverifiedShow Answer

There are no SSL/TLS gateway standards.

Correct AnswerverifiedShow Answer

Quantum key distribution creates a one-time key.

Correct AnswerverifiedShow Answer

A key is a random strong of 40 to 4,000 bits.

Correct AnswerverifiedShow Answer

Digital signatures are used much more often than are HMACs.

Correct AnswerverifiedShow Answer

Which are the two widely used public key encryption ciphers?

Correct AnswerverifiedShow Answer

There are three handshaking stages when two parties communicate through a cryptographic system standard.

Correct AnswerverifiedShow Answer

A cipher is a general way to encrypt information, while codes are limited.

Correct AnswerverifiedShow Answer

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