chap4

Question 1

is the science of making and breaking secret codes.

Answer 1

Cryptology

Question 2

Modern cryptography uses computationally secure algorithms

Answer 2

tru

Question 3

The history of cryptography started in

Answer 3

diplomatic circles thousands of years ago

Question 4

Each encryption method uses a specific algorithm, called a

Answer 4

cipher

Question 5

is a series of well-defined steps used to encrypt and
decrypt messages.

Answer 5

cipher

Question 6

There are several methods of creating ciphertext

Answer 6

▪ Transposition
▪ Substitution
▪ One-time pad

Question 7

The roots of cryptography are
found in

Answer 7

Egyptian and Roman
civilizations.

Question 8

The first known evidence of
cryptography can be traced to the
use of

Answer 8

hieroglyph

Question 9

The earlier Roman method of cryptography, popularly known as the

Answer 9

Caesar
Shift Cipher.

Question 10

Two Types of Encryption

Answer 10

Symmetric algorithms
ASymmetric algorithms

Question 11

15th century gave birth to

Answer 11

Vigenère Coding

Question 12

These algorithms use the same pre-shared key

Answer 12

Symmetric algorithms

Question 13

use one key to
encrypt data and a different key to decrypt data.

Answer 13

▪ Asymmetric algorithms

Question 14

a symmetric block
cipher with 64-bit block size

Answer 14

Digital Encryption Standard

Question 15

64 blocks
128 keys.

Answer 15

International Data Encryption Algorithm

Question 16

fixed 128

Answer 16

Advanced Encryption Standard

Question 17

uses the product of two very large prime
numbers

Answer 17

Rivest_Shamir-Adleman

Question 18

provides an electronic exchange

Answer 18

Diffie-Hellman -

Question 19

uses the U.S. government standard for digital signatures.

Answer 19

ElGamal

Question 19

uses elliptic curves

Answer 19

Elliptic Curve Cryptography

Question 20

Difference between symmetric and asymmetric

Answer 20

Symmetric more
efficient and can handle more data.
Asymmetric more efficient at protecting the confidentiality of
small amounts of data

Question 21

application of cryptohraphy

Answer 21

one-time password-generating token
▪ Internet Key Exchange
Secure Socket Layer
Secure Shell

Question 22

a private network that uses a public network

Answer 22

VPN

Question 23

services allow for authentication, integrity

Answer 23

ipsec

Question 24

actual barriers deployed to prevent direct contact
with systems.

Answer 24

Physical Access Controls

Question 25

hardware and software solutions to manage
access to resources

Answer 25

Logical Access Controls

Question 26

• policies and procedures defined by
  organizations

Answer 26

Administrative Access Controls

Question 27

• restricts the actions that a subject can
  perform on an object

Answer 27

Mandatory access control

Question 28

grants or restricts object access
determined by the object’s owner.

Answer 28

Discretionary access control

Question 29

based on the role of the subject.

Answer 29

Role-based

Question 30

Rule-based access control -

Answer 30

Rule-based access control -

Question 31

enforces the rules established by the authorization policy

Answer 31

Identification

Question 32

Authentication Methods

Answer 32

What You Know
What You Have
Who You Are
Multi-factor Authentication

Question 33

controls what a user can and cannot do on the network

Answer 33

Authorization

Question 34

traces an action back to a person or process

Answer 34

Accountability

Question 35

Prevent means

Answer 35

Preventative Controls

Question 36

opposite of a reward.

Answer 36

Deterrent Controls

Question 37

the act or process of noticing

Answer 37

Detective Controls

Question 38

counteracts something that is undesirable.

Answer 38

Corrective Controls

Question 39

is a return to a normal state

Answer 39

Recovery Controls

Question 40

means to make up for something.

Answer 40

Compensative Controls

Question 41

is a technology that secures data

Answer 41

Data Masking

Question 42

replaces data with authentic looking

Answer 42

▪ Substitution

Question 43

Shuffling

Answer 43

substitution set from the same column

Question 44

conceals data

Answer 44

Steganography

Question 45

use and practice of data masking

Answer 45

Data obfuscation