Question 1

Packaged sets of cryptographic countermeasures for protecting data transmission are ________.

Accepted Answer

A)   cryptographic standards
B)   metacryptographic systems
C)   cryptographic systems
D)   All of the aboveE) None of the above
F) B) and C)

Question 2

Most message-by-message authentication methods provide message integrity as a by-products.

Accepted Answer

A) True 
 B)False

Question 3

Proving your identity to a communication partner is ________.

Accepted Answer

A)   validation
B)   identification
C)   authentication
D)   certificationE) All of the above
F) A) and D)

Question 4

When you make a purchase over the Internet, your sensitive traffic is almost always protected by ________ VPN transmission.

Accepted Answer

A)   SSL/TLS
B)   IPsec
C)   Both A and B
D)   Neither A nor BE) A) and D)
F) B) and D)

Question 5

In cryptographic systems, the negotiation of security methods and options takes place during the ________ handshaking stage.

Accepted Answer

A)   first
B)   second
C)   third
D)   None of the aboveE) A) and D)
F) None of the above

Question 6

Nonces can be used in ________.

Accepted Answer

A)   all applications
B)   client/server applications
C)   time-insensitive applications
D)   persistent applicationsE) A) and B)
F) A) and C)

Question 7

Which of the following layers does IPsec protect?

Accepted Answer

A)   The transport layer
B)   The application layer
C)   Both of the above
D)   Neither of the aboveE) B) and D)
F) B) and C)

Question 8

Which of the following fields are contained on a digital certificate?

Accepted Answer

A)   Public key
B)   Digital signature
C)   Serial number
D)   All of the aboveE) All of the above
F) C) and D)

Question 9

The person the supplicant claims to be is the true party.

Accepted Answer

A) True 
 B)False

Question 10

The first task in establishing a cryptographic system is selecting a cryptographic system standard for the dialogue.

Accepted Answer

A) True 
 B)False

Question 11

IPsec tunnel mode ________.

Accepted Answer

A)   provides host-to-host protection
B)   is firewall-friendly
C)   Both A and B
D)   Neither A nor BE) A) and C)
F) B) and C)

Question 12

Julia encrypts a message to David using public key encryption for confidentiality. After encrypting the message, can Julia decrypt it?

Accepted Answer

A) True 
 B)False

Question 13

Site-to-site VPNs typically decrypt messages when they arrive from the outside.

Accepted Answer

A) True 
 B)False

Question 14

The hash size in SHA-1 is 160 bits.

Accepted Answer

A) True 
 B)False

Question 15

Companies transmit over the wireless LANs because WLANs ________.

Accepted Answer

A)   are inexpensive
B)   are secure
C)   Both A and B
D)   Neither A nor BE) A) and B)
F) A) and C)

Question 16

The most popular public key encryption cipher is ________.

Accepted Answer

A)   AES
B)   DES
C)   RSA
D)   ECCE) All of the above
F) None of the above

Question 17

In public key encryption for authentication, the verifier decrypts the ciphertext with the verifier's public key.

Accepted Answer

A) True 
 B)False

Question 18

A ________ is a mathematical process used in encryption and decryption.

Accepted Answer

A)   key
B)   cipher
C)   plaintext
D)   coding methodE) A) and B)
F) A) and C)

Question 19

MS-CHAP is used for ________ authentication.

Accepted Answer

A)   initial
B)   message-by-message
C)   Both A and B
D)   Neither A nor BE) A) and B)
F) A) and C)

Question 20

Using new and proprietary encryption ciphers is a good idea because cryptanalysts will not know them.

Accepted Answer

A) True 
 B)False

Exam 3: Cryptography

In cryptographic systems, the negotiation of security methods and options takes place during the ________ handshaking stage.

Correct AnswerverifiedShow Answer

IPsec tunnel mode ________.

Correct AnswerverifiedShow Answer

Nonces can be used in ________.

Correct AnswerverifiedShow Answer

MS-CHAP is used for ________ authentication.

Correct AnswerverifiedShow Answer

Using new and proprietary encryption ciphers is a good idea because cryptanalysts will not know them.

Correct AnswerverifiedShow Answer

Proving your identity to a communication partner is ________.

Correct AnswerverifiedShow Answer

Which of the following fields are contained on a digital certificate?

Correct AnswerverifiedShow Answer

The first task in establishing a cryptographic system is selecting a cryptographic system standard for the dialogue.

Correct AnswerverifiedShow Answer

Companies transmit over the wireless LANs because WLANs ________.

Correct AnswerverifiedShow Answer

A ________ is a mathematical process used in encryption and decryption.

Correct AnswerverifiedShow Answer

The most popular public key encryption cipher is ________.

Correct AnswerverifiedShow Answer

Site-to-site VPNs typically decrypt messages when they arrive from the outside.

Correct AnswerverifiedShow Answer

The hash size in SHA-1 is 160 bits.

Correct AnswerverifiedShow Answer

Most message-by-message authentication methods provide message integrity as a by-products.

Correct AnswerverifiedShow Answer

The person the supplicant claims to be is the true party.

Correct AnswerverifiedShow Answer

In public key encryption for authentication, the verifier decrypts the ciphertext with the verifier's public key.

Correct AnswerverifiedShow Answer

Julia encrypts a message to David using public key encryption for confidentiality. After encrypting the message, can Julia decrypt it?

Correct AnswerverifiedShow Answer

When you make a purchase over the Internet, your sensitive traffic is almost always protected by ________ VPN transmission.

Correct AnswerverifiedShow Answer

Which of the following layers does IPsec protect?

Correct AnswerverifiedShow Answer

Packaged sets of cryptographic countermeasures for protecting data transmission are ________.

Correct AnswerverifiedShow Answer

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