Question 1

As DES became known as being too weak for highly classified communications, Double DES was created to provide a level of security far beyond that of DES. _________________________

Accepted Answer

A) True 
 B)False  False - Triple

Question 2

The most common hybrid system is based on the Diffie-Hellman key exchange, which is a method for exchanging private keys using public-key encryption.

Accepted Answer

A) True 
 B)False  True

Question 3

To perform the Caesar cipher encryption operation, the pad values are added to numeric values that represent the plaintext that needs to be encrypted.

Accepted Answer

A) True 
 B)False  False

Question 4

__________ is the entire range of values that can possibly be used to construct an individual key.

Accepted Answer

A)  Code
B)  Keyspace
C)  An algorithm
D)  A cryptogram

Question 5

Describe digital certificates.

Accepted Answer

The answer of Describe digital certificates....

Question 6

In IPSec ____________________ mode, only the IP data is encrypted, not the IP headers.

Accepted Answer

The answer of In IPSec ____________________ mode, only the IP...

Question 7

UltraViolet wireless (UVW) is a de facto industry standard for short-range wireless communications between devices. _________________________

Accepted Answer

A) True 
 B)False

Question 8

A mathematical ____________________ is a secret mechanism that enables you to easily accomplish the reverse function in a one-way function.

Accepted Answer

The answer of A mathematical ____________________ is a secret mechanism...

Question 9

An X.509 v3 certificate binds a ___________, which uniquely identifies a certificate entity, to a user's public key.

Accepted Answer

A)  message digest
B)  fingerprint
C)  distinguished name
D)  digital signature

Question 10

Hash algorithms are public functions that create a message digest by converting variable-length messages into a single fixed-length value. _________________________

Accepted Answer

A) True 
 B)False

Question 11

__________ is the amount of effort (usually in hours) required to perform cryptanalysis to decode an encrypted message when the key or algorithm (or both) are unknown.

Accepted Answer

A)  Code
B)  An algorithm
C)  A key
D)  Work factor

Question 12

_________ is a hybrid cryptosystem that combines some of the best available cryptographic algorithms and has become the open-source de facto standard for encryption and authentication of e-mail and file storage applications.

Accepted Answer

A)  PGP
B)  DES
C)  AH
D)  ESP

Question 13

Secure Electronic Transactions was developed by MasterCard and Visa in 1997 to protect against electronic payment fraud.

Accepted Answer

A) True 
 B)False

Question 14

__________ is a protocol that can be used to secure communications across any IP-based network such as LANs, WANs, and the Internet.

Accepted Answer

A)  PEM
B)  SSH
C)  IPSec
D)  SET

Question 15

Usually, as the length of a cryptovariable increases, the number of random guesses that have to be made in order to break the code is reduced.

Accepted Answer

A) True 
 B)False

Question 16

Asymmetric encryption systems use a single key to both encrypt and decrypt a message.

Accepted Answer

A) True 
 B)False

Question 17

The encapsulating security ____________________ protocol provides secrecy for the contents of network communications as well as system-to-system authentication and data integrity verification.

Accepted Answer

The answer of The encapsulating security ____________________ protocol provides secrecy...

Question 18

Hashing functions require the use of keys.

Accepted Answer

A) True 
 B)False

Question 19

The S-HTTP security solution provides six services: authentication by digital signatures, message encryption, compression, e-mail compatibility, segmentation, and key management.

Accepted Answer

A) True 
 B)False

Question 20

Popular cryptosystems use a hybrid combination of symmetric and asymmetric algorithms.

Accepted Answer

A) True 
 B)False

Exam 8: Cryptography

As DES became known as being too weak for highly classified communications, Double DES was created to provide a level of security far beyond that of DES. _________________________

The most common hybrid system is based on the Diffie-Hellman key exchange, which is a method for exchanging private keys using public-key encryption.

To perform the Caesar cipher encryption operation, the pad values are added to numeric values that represent the plaintext that needs to be encrypted.

__________ is the entire range of values that can possibly be used to construct an individual key.

Describe digital certificates.

In IPSec ____________________ mode, only the IP data is encrypted, not the IP headers.

UltraViolet wireless (UVW) is a de facto industry standard for short-range wireless communications between devices. _________________________

A mathematical ____________________ is a secret mechanism that enables you to easily accomplish the reverse function in a one-way function.

An X.509 v3 certificate binds a ___________, which uniquely identifies a certificate entity, to a user's public key.

Hash algorithms are public functions that create a message digest by converting variable-length messages into a single fixed-length value. _________________________

__________ is the amount of effort (usually in hours) required to perform cryptanalysis to decode an encrypted message when the key or algorithm (or both) are unknown.

_________ is a hybrid cryptosystem that combines some of the best available cryptographic algorithms and has become the open-source de facto standard for encryption and authentication of e-mail and file storage applications.

Secure Electronic Transactions was developed by MasterCard and Visa in 1997 to protect against electronic payment fraud.

__________ is a protocol that can be used to secure communications across any IP-based network such as LANs, WANs, and the Internet.

Usually, as the length of a cryptovariable increases, the number of random guesses that have to be made in order to break the code is reduced.

Asymmetric encryption systems use a single key to both encrypt and decrypt a message.

The encapsulating security ____________________ protocol provides secrecy for the contents of network communications as well as system-to-system authentication and data integrity verification.

Hashing functions require the use of keys.

The S-HTTP security solution provides six services: authentication by digital signatures, message encryption, compression, e-mail compatibility, segmentation, and key management.

Popular cryptosystems use a hybrid combination of symmetric and asymmetric algorithms.