Deck 8: Encryption

Question 1

The most widely used symmetric key algorithm is Advanced Encryption Standard.

Answer 1

True

Question 2

Public key encryption is fast becoming the most widely used type of encryption because there are no issues to deal with concerning distribution of keys.

Answer 2

True

Question 3

Which of the following is an operation used on binary numbers not found in normal math?

A)AND
B)PLUS
C)MINUS
D)None of the above

Answer 3

A

Question 4

A(n)________ refers to the bits that are combined with the plain text to encrypt it.

A)Key
B)Plain
C)Cipher text
D)Algorithm

Question 5

A digital signature is used to guarantee who sent a message.This is referred to as non-repudiation.

Question 6

______________ is the process to scramble a message or other information so that it cannot be easily read.

A)Encryption
B)Cryptography
C)Keying
D)Decryption

Question 7

Which of these is NOT one of the two basic types of cryptography?

A)Asymmetric
B)Symmetric
C)Forward
D)None of the above

Question 8

________ refers to unencrypted text.

A)Key
B)Plain text
C)Algorithm
D)Cipher text

Question 9

A virtual private network is a way to use the Internet to create a connection between a remote user and a central location.

Question 10

Using the __________ cipher you choose some number by which to shift each letter of a text.

A)DC4
B)Caesar
C)Multi-alphabet substitution
D)ASCII

Question 11

__________ is the art to write in or decipher secret code.

A)Encryption
B)Cryptography
C)Keying
D)Decryption

Question 12

With asymmetric cryptography a different ______ is used to encrypt the message and to decrypt the message.

A)Code
B)Key
C)Lock
D)Script

Question 13

Kerberos is an authentication protocol that uses a ticket granting system that sends an encrypted ticket to the user's machine.

Question 14

Binary numbers are made up of 0s and 1s.

Question 15

L2TP uses IPsec for its encryption.

Question 16

PGP involves only private key encryption.

Question 17

__________refers to encrypted text.

A)Key
B)Plain text
C)Algorithm
D)Cipher text

Question 18

Using the _________ cipher you select multiple numbers by which to shift letters.

A)DC4
B)Caesar
C)Multi-alphabet substitution
D)ASCII

Question 19

Cipher text is encrypted text.

Question 20

IPsec can only encrypt the packet data but not the header information.

Question 21

With ______________ encryption,one key is used to encrypt a message,and another is used to decrypt the message.

A)Private key
B)Public key
C)Cipher
D)None of the above

Question 22

A(n)___________is a mathematical process for doing something.

A)Formula
B)Algorithm
C)Cipher
D)None of the above

Question 23

Windows stores passwords using a method called __________.

A)Hashing
B)Authentication
C)Kerberos
D)None of the above

Question 24

_________ is a block cipher that uses a variable-length key ranging from 32 to 448 bits.

A)3DES
B)AES
C)Blowfish
D)RC4

Question 25

Which of these is NOT a type of symmetric algorithm?

A)Stream
B)Block
C)Transcription
D)None of the above