Question 1

The formula ____ represents the application of encryption (E) to a message (M) to create ciphertext (C)

Accepted Answer

A)  E(
C)  = M 
B)  E(M) = C 
C)  E*C = M 
D)  M = E?C 
A)  E(
C)  = M 
B)  E(M) = C 
C)  E*C = M 
D)  M = E?C B

Question 2

The XOR cipher conversion subjects the bitstream to a Boolean XOR function against some other data stream typically a ____ stream "

Accepted Answer

A)  data 
B)  cipher 
C)  plaintext 
D)  key 
A)  data 
B)  cipher 
C)  plaintext 
D)  key D

Question 3

Rijndael is the block cipher algorithm behind what encryption standard?

Accepted Answer

A)  AES 
B)  3DES 
C)  DES 
D)  RSA 
A)  AES 
B)  3DES 
C)  DES 
D)  RSA A

Question 4

Asymmetric encryption uses ____ separate keys for each message.

Accepted Answer

A)  one 
B)  two 
C)  three 
D)  four 
A)  one 
B)  two 
C)  three 
D)  four

Question 5

Describe asymmetric encryption.

Accepted Answer

Another encryption technique is asymmetr

Question 6

What is a Vernam cipher?

Accepted Answer

Also known as the one-time pad, the Vern

Question 7

The reverse of the asymmetric encryption process yields ____.

Accepted Answer

A)  digital signatures 
B)  certificate authorities 
C)  DES 
D)  a Rijndael round 
A)  digital signatures 
B)  certificate authorities 
C)  DES 
D)  a Rijndael round

Question 8

MasterCard and VISA developed ____ in 1997.

Accepted Answer

A)  Secure Hypertext Transfer Protocol (SHTTP) 
B)  Secure Shell (SSH) 
C)  Secure Sockets Layer (SSL) 
D)  Secure Electronic Transactions (SET) 
A)  Secure Hypertext Transfer Protocol (SHTTP) 
B)  Secure Shell (SSH) 
C)  Secure Sockets Layer (SSL) 
D)  Secure Electronic Transactions (SET)

Question 9

The ____ cipher rearranges the values within a block to create the ciphertext.

Accepted Answer

A)  transposition 
B)  polyalphabetic substitution 
C)  Vernam 
D)  monoalphabetic substitution 
A)  transposition 
B)  polyalphabetic substitution 
C)  Vernam 
D)  monoalphabetic substitution

Question 10

One of the most popular public key cryptosystems is a proprietary model named ____.

Accepted Answer

A)  Triple DES 
B)  Rijndael 
C)  Rivest-Shamir-Aldeman (RS
A)  
D)  certificate authority (C
A)  
A)  Triple DES 
B)  Rijndael 
C)  Rivest-Shamir-Aldeman (RS
A)  
D)  certificate authority (C
A)

Question 11

An attacker may obtain duplicate texts, one in ciphertext and one in plaintext, which enable the individual to reverse-engineer the encryption algorithm in a ____ attack.

Accepted Answer

A)  man-in-the-middle 
B)  timing 
C)  known-plaintext 
D)  selected-plaintext 
A)  man-in-the-middle 
B)  timing 
C)  known-plaintext 
D)  selected-plaintext

Question 12

Match each item with a statement below.
-The encrypted or encoded message resulting from an encryption.

Accepted Answer

A) cipher 
B) keyspace 
C) encipher 
D) cryptosystem 
E) ciphertext
F)work factor
G)decipher
H)algorithm
I)cryptovariable 
A) cipher 
B) keyspace 
C) encipher 
D) cryptosystem 
E) ciphertext
F)work factor
G)decipher
H)algorithm
I)cryptovariable

Question 13

Historically, attempts to gain unauthorized access to secure communications have used brute force attacks.

Accepted Answer

A) True 
 B)False

Question 14

AES has been the federally approved standard for nonclassified data since 2002.

Accepted Answer

A) True 
 B)False

Question 15

____ attacks are collections of brute-force methods that attempt to deduce statistical relationships between the structure of the unknown key and the ciphertext that is the output of the cryptosystem.

Accepted Answer

A)  Correlation 
B)  Man-in-the-middle 
C)  Dictionary 
D)  Timing 
A)  Correlation 
B)  Man-in-the-middle 
C)  Dictionary 
D)  Timing

Question 16

Pretty Good Privacy (PGP) provides security for ____.

Accepted Answer

A)  banking 
B)  HTTP 
C)  e-mail 
D)  FTP 
A)  banking 
B)  HTTP 
C)  e-mail 
D)  FTP

Question 17

____ is the predominant cryptographic authentication and encryption protocol suite in use today.

Accepted Answer

A)  Secure Hypertext Transfer Protocol (SHTTP) 
B)  Public key infrastructure (PKI) 
C)  Privacy Enhanced Mail (PEM) 
D)  IP Security (IPSec) 
A)  Secure Hypertext Transfer Protocol (SHTTP) 
B)  Public key infrastructure (PKI) 
C)  Privacy Enhanced Mail (PEM) 
D)  IP Security (IPSec)

Question 18

PKI systems are based on public key cryptosystems and include digital certificates and certificate ____________________.

Accepted Answer

The answer of PKI systems are based on public key...

Question 19

Match each item with a statement below.
-The mathematical formula or method used to convert an unencrypted message into an encrypted message or vice versa.

Accepted Answer

A) cipher 
B) keyspace 
C) encipher 
D) cryptosystem 
E) ciphertext
F)work factor
G)decipher
H)algorithm
I)cryptovariable 
A) cipher 
B) keyspace 
C) encipher 
D) cryptosystem 
E) ciphertext
F)work factor
G)decipher
H)algorithm
I)cryptovariable

Question 20

Match each item with a statement below.
-The set of transformations necessary to convert an unencrypted message into an encrypted message.

Accepted Answer

A) cipher 
B) keyspace 
C) encipher 
D) cryptosystem 
E) ciphertext
F)work factor
G)decipher
H)algorithm
I)cryptovariable 
A) cipher 
B) keyspace 
C) encipher 
D) cryptosystem 
E) ciphertext
F)work factor
G)decipher
H)algorithm
I)cryptovariable

The formula ____ represents the application of encryption (E) to a message (M) to create ciphertext (C)

The XOR cipher conversion subjects the bitstream to a Boolean XOR function against some other data stream typically a ____ stream "

Rijndael is the block cipher algorithm behind what encryption standard?

Asymmetric encryption uses ____ separate keys for each message.

Describe asymmetric encryption.

What is a Vernam cipher?

The reverse of the asymmetric encryption process yields ____.

MasterCard and VISA developed ____ in 1997.

The ____ cipher rearranges the values within a block to create the ciphertext.

One of the most popular public key cryptosystems is a proprietary model named ____.

An attacker may obtain duplicate texts, one in ciphertext and one in plaintext, which enable the individual to reverse-engineer the encryption algorithm in a ____ attack.

Match each item with a statement below. -The encrypted or encoded message resulting from an encryption.

Historically, attempts to gain unauthorized access to secure communications have used brute force attacks.

AES has been the federally approved standard for nonclassified data since 2002.

____ attacks are collections of brute-force methods that attempt to deduce statistical relationships between the structure of the unknown key and the ciphertext that is the output of the cryptosystem.

Pretty Good Privacy (PGP) provides security for ____.

____ is the predominant cryptographic authentication and encryption protocol suite in use today.

PKI systems are based on public key cryptosystems and include digital certificates and certificate ____________________.

Match each item with a statement below. -The mathematical formula or method used to convert an unencrypted message into an encrypted message or vice versa.

Match each item with a statement below. -The set of transformations necessary to convert an unencrypted message into an encrypted message.

Introduction to Information Security

Security Policies and Standards

Authenticating Users

Introduction to Firewalls

Packet Filtering

Firewall Configuration and Administration

Working With Proxy Servers and Application-Level Firewalls

Implementing the Bastion Host

Setting up a Virtual Private Network

Filters

Exam 9: Encryption - The Foundation for the Virtual Private Network

The formula ____ represents the application of encryption (E) to a message (M) to create ciphertext (C)

The XOR cipher conversion subjects the bitstream to a Boolean XOR function against some other data stream typically a ____ stream "

Rijndael is the block cipher algorithm behind what encryption standard?

Asymmetric encryption uses ____ separate keys for each message.

Describe asymmetric encryption.

What is a Vernam cipher?

The reverse of the asymmetric encryption process yields ____.

MasterCard and VISA developed ____ in 1997.

The ____ cipher rearranges the values within a block to create the ciphertext.

One of the most popular public key cryptosystems is a proprietary model named ____.

An attacker may obtain duplicate texts, one in ciphertext and one in plaintext, which enable the individual to reverse-engineer the encryption algorithm in a ____ attack.

Match each item with a statement below. -The encrypted or encoded message resulting from an encryption.

Historically, attempts to gain unauthorized access to secure communications have used brute force attacks.

AES has been the federally approved standard for nonclassified data since 2002.

____ attacks are collections of brute-force methods that attempt to deduce statistical relationships between the structure of the unknown key and the ciphertext that is the output of the cryptosystem.

Pretty Good Privacy (PGP) provides security for ____.

____ is the predominant cryptographic authentication and encryption protocol suite in use today.

PKI systems are based on public key cryptosystems and include digital certificates and certificate ____________________.

Match each item with a statement below. -The mathematical formula or method used to convert an unencrypted message into an encrypted message or vice versa.

Match each item with a statement below. -The set of transformations necessary to convert an unencrypted message into an encrypted message.

Introduction to Information Security

Security Policies and Standards

Authenticating Users

Introduction to Firewalls

Packet Filtering

Firewall Configuration and Administration

Working With Proxy Servers and Application-Level Firewalls

Implementing the Bastion Host

Setting up a Virtual Private Network

Filters