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CYF Theory Quiz - Chapter 4

Total questions: 25

Worksheet time: 14mins

Name
Class
Date
1.

Which term describes the technology that protects software from unauthorized access or modification?

a)

watermarking

b)

copyright

c)

access control

d)

trademark

2.

What is the term used to describe the science of making and breaking secret codes?

a)

cryptology

b)

jamming

c)

factorization

d)

spoofing

e)

impersonation

3.

A warning banner that lists the negative outcomes of breaking company policy is displayed each time a computer user logs in to the machine. What type of access control is implemented?

a)

preventive

b)

deterrent

c)

masking

d)

detective

4.

What is the name of the method in which letters are rearranged to create the ciphertext?

a)

one-time pad

b)

substitution

c)

transposition

d)

enigma

5.

What encryption algorithm uses one key to encrypt data and a different key to decrypt data?

a)

symmetric

b)

one-time pad

c)

transposition

d)

asymmetric

6.

What term is used to describe concealing data in another file such as a graphic, audio, or other text file?

a)

masking

b)

steganography

c)

obfuscation

d)

hiding

7.

What are three examples of administrative access controls? (Choose three.)

a)

policies and procedures

b)

encryption

c)

hiring practices

d)

guard dogs

e)

background checks

8.

creating a message that says one thing but means something else to a specific audience

a)

steganography

b)

social steganography

c)

steganalysis

d)

obfuscation

9.

hiding data within an audio file

a)

steganography

b)

social steganography

c)

steganalysis

d)

obfuscation

10.

discovering that hidden information exists within a graphic file

a)

steganography

b)

social steganography

c)

steganalysis

d)

obfuscation

11.

making a message confusing so it is harder to understand

a)

steganography

b)

social steganography

c)

steganalysis

d)

obfuscation

12.

Which asymmetric algorithm provides an electronic key exchange method to share the secret key?

a)

hashing

b)

WEP

c)

Diffie-Hellman

d)

RSA

e)

DES

13.

What encryption algorithm uses the same pre-shared key to encrypt and decrypt data?

a)

one-time pad

b)

asymmetric

c)

symmetric

d)

hash

14.

What cryptographic algorithm is used by the NSA and includes the use of elliptical curves for digital signature generation and key exchange?

a)

IDEA

b)

AES

c)

El-Gamal

d)

ECC

e)

RSA

15.

a fingerprint scan

a)

something you are

b)

something you have

c)

something you know

16.

a security key fob

a)

something you are

b)

something you have

c)

something you know

17.

a password

a)

something you are

b)

something you have

c)

something you know

18.

Which three processes are examples of logical access controls? (Choose three.)

a)

intrusion detection system (IDS) to watch for suspicious network activity

b)

firewalls to monitor traffic

c)

fences to protect the perimeter of a building

d)

biometrics to validate physical characteristics

e)

guards to monitor security screens

19.

Which two terms are used to describe cipher keys? (Choose two.)

a)

keylogging

b)

key length

c)

key space

d)

key randomness

20.

Which three protocols use asymmetric key algorithms? (Choose three.)

a)

Secure Sockets Layer (SSL)

b)

Secure File Transfer Protocol (SFTP)

c)

Pretty Good Privacy (PGP)

d)

Advanced Encryption Standard (AES)

e)

Secure Shell (SSH)

21.

Which three devices represent examples of physical access controls? (Choose three.)

a)

routers

b)

swipe cards

c)

video cameras

d)

locks

e)

firewalls

22.

What term is used to describe the technology that replaces sensitive information with a nonsensitive version?

a)

hiding

b)

blanking

c)

masking

d)

retracting

e)

whiteout

23.

Which type of cipher is able to encrypt a fixed-length block of plaintext into a 128-bit block of ciphertext at any one time?

a)

transform

b)

block

c)

stream

d)

stream

e)

hash

24.

Which 128-bit block cipher encryption algorithm does the US government use to protect classified information?

a)

AES

b)

Caesar

c)

3DES

d)

Skipjack

e)

Vignere

25.

What type of cipher encrypts plaintext one byte or one bit at a time?

a)

block

b)

hash

c)

enigma

d)

stream

e)

elliptical