Question 1

The most common technologies used for secure network communication are

Accepted Answer

A)  VPN and SSL 
B)  AES and DES 
C)  PKI and RSA 
D)  Diffusion and confusion 
A)  VPN and SSL 
B)  AES and DES 
C)  PKI and RSA 
D)  Diffusion and confusion A

Question 2

The first documented instance of encryption was used by

Accepted Answer

A)  Egyptian pharaoh Tutankhamun 
B)  Italian inventor Leonardo da Vinci 
C)  Italian artist Michelangelo 
D)  Roman Emperor Julius Caesar 
A)  Egyptian pharaoh Tutankhamun 
B)  Italian inventor Leonardo da Vinci 
C)  Italian artist Michelangelo 
D)  Roman Emperor Julius Caesar D

Question 3

A cryptographic algorithm is

Accepted Answer

A)  Symbols that controls encipherment and decipherment 
B)  A well-defined sequence of steps used to describe cryptographic processes 
C)  An encryption method that uses no keys 
D)  Text that is unintelligible to the reader 
A)  Symbols that controls encipherment and decipherment 
B)  A well-defined sequence of steps used to describe cryptographic processes 
C)  An encryption method that uses no keys 
D)  Text that is unintelligible to the reader B

Question 4

Hash functions are used primarily for

Accepted Answer

A)  Sharing a secret key prior to network transmission 
B)  Storing data on hard drives 
C)  Encrypting data during transmission over a network 
D)  Saving passwords 
A)  Sharing a secret key prior to network transmission 
B)  Storing data on hard drives 
C)  Encrypting data during transmission over a network 
D)  Saving passwords

Question 5

Encryption is

Accepted Answer

A)  The transformation of data to produce ciphertext 
B)  Text that is unintelligible to the reader 
C)  A sequence of symbols that controls the operations of encipherment and decipherment 
D)  A well-defined sequence of steps used to describe cryptographic processes 
E)  An encryption method that uses no keys 
A)  The transformation of data to produce ciphertext 
B)  Text that is unintelligible to the reader 
C)  A sequence of symbols that controls the operations of encipherment and decipherment 
D)  A well-defined sequence of steps used to describe cryptographic processes 
E)  An encryption method that uses no keys

Question 6

The current standard for secret key encryption is

Accepted Answer

A)  DES Data Encryption Standard 
B)  AES Advanced Encryption Standard 
C)  IDEA International Data Encryption Algorithm 
D)  SHA Secure Hash Algorithm 
A)  DES Data Encryption Standard 
B)  AES Advanced Encryption Standard 
C)  IDEA International Data Encryption Algorithm 
D)  SHA Secure Hash Algorithm

Question 7

Ciphertext is

Accepted Answer

A)  The transformation of data to produce ciphertext 
B)  Text that is unintelligible to the reader 
C)  A sequence of symbols that controls the operations of encipherment and decipherment 
D)  A well-defined sequence of steps used to describe cryptographic processes 
E)  An encryption method that uses no keys 
A)  The transformation of data to produce ciphertext 
B)  Text that is unintelligible to the reader 
C)  A sequence of symbols that controls the operations of encipherment and decipherment 
D)  A well-defined sequence of steps used to describe cryptographic processes 
E)  An encryption method that uses no keys

Question 8

Hash functions use

Accepted Answer

A)  2 keys 
B)  1 key 
C)  0 keys 
D)  Any of the above, depending upon the specific hash algorithm 
A)  2 keys 
B)  1 key 
C)  0 keys 
D)  Any of the above, depending upon the specific hash algorithm

Question 9

In the context of encryption, a key is

Accepted Answer

A)  A well-defined sequence of steps used to describe cryptographic processes 
B)  An encryption method that uses no keys 
C)  A sequence of symbols that controls the operations of encipherment and decipherment 
D)  Text that is unintelligible to the reader 
A)  A well-defined sequence of steps used to describe cryptographic processes 
B)  An encryption method that uses no keys 
C)  A sequence of symbols that controls the operations of encipherment and decipherment 
D)  Text that is unintelligible to the reader

Question 10

The word Cipher is based on an Arabic word, cifr, that means

Accepted Answer

A)  Sender 
B)  Secret 
C)  Nothing 
D)  Receiver 
A)  Sender 
B)  Secret 
C)  Nothing 
D)  Receiver

Question 11

Digital signatures are

Accepted Answer

A)  The transformation of data to produce ciphertext 
B)  The use of cryptography that allows a user to prove the source and integrity of data 
C)  Text that is unintelligible to the reader 
D)  A sequence of symbols that controls the operations of encipherment and decipherment 
A)  The transformation of data to produce ciphertext 
B)  The use of cryptography that allows a user to prove the source and integrity of data 
C)  Text that is unintelligible to the reader 
D)  A sequence of symbols that controls the operations of encipherment and decipherment

Question 12

Public key encryption is used primarily for

Accepted Answer

A)  Sharing a secret key prior to network transmission 
B)  Storing data on hard drives 
C)  Encrypting data during transmission over a network 
D)  Saving passwords 
A)  Sharing a secret key prior to network transmission 
B)  Storing data on hard drives 
C)  Encrypting data during transmission over a network 
D)  Saving passwords

Question 13

Public key encryption techniques used in practice are based heavily on

Accepted Answer

A)  Division operations 
B)  Set operations 
C)  Extraction operations 
D)  Modulus operations 
A)  Division operations 
B)  Set operations 
C)  Extraction operations 
D)  Modulus operations

Question 14

In using public key encryption, messages are deciphered using

Accepted Answer

A)  A public key 
B)  A shared secret key 
C)  Any key 
D)  A private key 
A)  A public key 
B)  A shared secret key 
C)  Any key 
D)  A private key

Question 15

Desirable properties In good encryption algorithms include

Accepted Answer

A)  Generating characters that appear random 
B)  Generating output that appears to be of random length 
C)  Changing at least half the bits in the output when even one bit changes in the input 
D)  All the above 
A)  Generating characters that appear random 
B)  Generating output that appears to be of random length 
C)  Changing at least half the bits in the output when even one bit changes in the input 
D)  All the above

Question 16

Electronic Code Book ECB is not used for encryption since it has inadequate

Accepted Answer

A)  Licensing flexibility 
B)  Recovery features 
C)  Diffusion of confusion 
D)  Parallelism 
A)  Licensing flexibility 
B)  Recovery features 
C)  Diffusion of confusion 
D)  Parallelism

Question 17

Cryptanalysis is

Accepted Answer

A)  The art of breaking ciphertext 
B)  The transformation of data to produce ciphertext 
C)  The science of creating superior encryption algorithms 
D)  Text that is unintelligible to the reader 
A)  The art of breaking ciphertext 
B)  The transformation of data to produce ciphertext 
C)  The science of creating superior encryption algorithms 
D)  Text that is unintelligible to the reader

Question 18

For any given input, the length of its hash out is

Accepted Answer

A)  Always shorter than the input 
B)  Depends upon the length of the input 
C)  Always the same 
D)  Always longer than the input 
A)  Always shorter than the input 
B)  Depends upon the length of the input 
C)  Always the same 
D)  Always longer than the input

Question 19

A certificate used in web applications contains the

Accepted Answer

A)  Shared secret key prior to network transmission 
B)  The hash output of the data to be transmitted 
C)  Saved password of the end user for recovery 
D)  Public key of the server and information about the key provider 
A)  Shared secret key prior to network transmission 
B)  The hash output of the data to be transmitted 
C)  Saved password of the end user for recovery 
D)  Public key of the server and information about the key provider

Question 20

Block encryption uses both

Accepted Answer

A)  Relational and Procedural operations 
B)  Substitution and permutation 
C)  Keys and hashes 
D)  Data and storage 
A)  Relational and Procedural operations 
B)  Substitution and permutation 
C)  Keys and hashes 
D)  Data and storage

The most common technologies used for secure network communication are

The first documented instance of encryption was used by

A cryptographic algorithm is

Hash functions are used primarily for

Encryption is

The current standard for secret key encryption is

Ciphertext is

Hash functions use

In the context of encryption, a key is

The word Cipher is based on an Arabic word, cifr, that means

Digital signatures are

Public key encryption is used primarily for

Public key encryption techniques used in practice are based heavily on

In using public key encryption, messages are deciphered using

Desirable properties In good encryption algorithms include

Electronic Code Book ECB is not used for encryption since it has inadequate

Cryptanalysis is

For any given input, the length of its hash out is

A certificate used in web applications contains the

Block encryption uses both

Introduction

System Administration

System Administration 2

Basic Information Security Model

Asset Identification and Characterization

Threats and Vulnerabilities

Identity and Access Management

Hardware and Software Controls

Shell Scripting

Incident Handling

Incident Analysis

Policies, Standards and Guidelines

It Risk Analysis and Risk Management

Filters

Exam 7: Encryption Controls

The most common technologies used for secure network communication are

The first documented instance of encryption was used by

A cryptographic algorithm is

Hash functions are used primarily for

Encryption is

The current standard for secret key encryption is

Ciphertext is

Hash functions use

In the context of encryption, a key is

The word Cipher is based on an Arabic word, cifr, that means

Digital signatures are

Public key encryption is used primarily for

Public key encryption techniques used in practice are based heavily on

In using public key encryption, messages are deciphered using

Desirable properties In good encryption algorithms include

Electronic Code Book ECB is not used for encryption since it has inadequate

Cryptanalysis is

For any given input, the length of its hash out is

A certificate used in web applications contains the

Block encryption uses both

Introduction

System Administration

System Administration 2

Basic Information Security Model

Asset Identification and Characterization

Threats and Vulnerabilities

Identity and Access Management

Hardware and Software Controls

Shell Scripting

Incident Handling

Incident Analysis

Policies, Standards and Guidelines

It Risk Analysis and Risk Management

Filters