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WorksheetsUnit 4 - Encryption - BIG ONE
Total questions: 61
Worksheet time: 31mins
Name
Class
Date
1.
What are the two forms of authenticated modes of operations?
a)
Single-sided and mutual
b)
Dual and unilateral
c)
Disconnected and mutual
d)
Single-sided and double-sided
2.
Authenticated modes of encryption validate the integrity of the ciphertext, verifying it has not been modified.
a)
True
b)
False
3.
What is a mode of operation?
a)
An algorithm used with a block cipher to make an encryption algorithm
b)
Determining whether the game difficulty is easy, medium, hard, or impossible
c)
Choosing whether to work with traditional medicine or black magic
d)
The choice on boot between running in BIOS or loading the OS
4.
Which of the following is true about CTR mode?
a)
It is a block cipher acting like a stream cipher
b)
It authenticates and encrypts at the same time
c)
It is a stream cipher acting like a block cipher
d)
The counter decreases by one from one block to the next
5.
What is a blockchain?
a)
a distributed and immutable public ledger
b)
A chain of block ciphers
c)
A series of encryption algorithms designed to secure governmental data
d)
None of the above
6.
What are the two forms of authenticated modes of operations?
a)
Single-sided and mutual
b)
Dual and unilateral
c)
Disconnected and mutual
d)
Single-sided and double-sided
7.
Authenticated modes of encryption validate the integrity of the ciphertext, verifying it has not been modified.
a)
True
b)
False
8.
What is a mode of operation?
a)
An algorithm used with a block cipher to make an encryption algorithm
b)
Determining whether the game difficulty is easy, medium, hard, or impossible
c)
Choosing whether to work with traditional medicine or black magic
d)
The choice on boot between running in BIOS or loading the OS
9.
Which of the following is true about CTR mode?
a)
It is a block cipher acting like a stream cipher
b)
It authenticates and encrypts at the same time
c)
It is a stream cipher acting like a block cipher
d)
The counter decreases by one from one block to the next
10.
What is a blockchain?
a)
a distributed and immutable public ledger
b)
A chain of block ciphers
c)
A series of encryption algorithms designed to secure governmental data
d)
None of the above
11.
What are the two forms of authenticated modes of operations?
a)
Single-sided and mutual
b)
Dual and unilateral
c)
Disconnected and mutual
d)
Single-sided and double-sided
12.
Authenticated modes of encryption validate the integrity of the ciphertext, verifying it has not been modified.
a)
True
b)
False
13.
What is a mode of operation?
a)
An algorithm used with a block cipher to make an encryption algorithm
b)
Determining whether the game difficulty is easy, medium, hard, or impossible
c)
Choosing whether to work with traditional medicine or black magic
d)
The choice on boot between running in BIOS or loading the OS
14.
Which of the following is true about CTR mode?
a)
It is a block cipher acting like a stream cipher
b)
It authenticates and encrypts at the same time
c)
It is a stream cipher acting like a block cipher
d)
The counter decreases by one from one block to the next
15.
What is a blockchain?
a)
a distributed and immutable public ledger
b)
A chain of block ciphers
c)
A series of encryption algorithms designed to secure governmental data
d)
None of the above
16.
What is a stream cipher?
a)
A symmetric key cipher that encrypts plaintext one byte at a time
b)
An asymmetric key cipher that encrypts plaintext one stream at a time
c)
A symmetric key cipher that encrypts plaintext one block at a time
d)
An asymmetric key cipher that encrypts plaintext one hash at a time
17.
What is a block cipher?
a)
A symmetric key cipher that encrypts plaintext one block at a time
b)
An asymmetric key cipher that encrypts plaintext one stream at a time
c)
An asymmetric key cipher that encrypts plaintext one hash at a time
d)
A symmetric key cipher that encrypts plaintext one byte at a time
18.
If the plaintext cant be divided evenly into equal sized blocks, what is done to bring the plaintext to a proper length?
a)
Padding
b)
Repeating
c)
Completing
d)
Filling
19.
What is a mode of operation?
a)
An algorithm used with a block cipher to make an encryption algorithm
b)
Determining whether the game difficulty is easy, medium, hard, or impossible
c)
Choosing whether to work with traditional medicine or black magic
d)
The choice on boot between running in BIOS or loading the OS
20.
What is ECB?
a)
Electronic Codebook
b)
Exocipher Byte
c)
Engineering Cryptographic Bytes
d)
Encryption Cipher Box
21.
What does CBC add on top of ECB?
a)
Randomization
b)
None of the above
c)
Obfuscation
d)
Authentication
22.
What does CBC use for the first plaintext block since it doesn't have a ciphertext block preceding it?
a)
Initial vector
b)
Padding
c)
Nothing
d)
Obfuscation
23.
Which of the following is true about CTR mode?
a)
It is a block cipher acting like a stream cipher
b)
It authenticates and encrypts at the same time
c)
It is a stream cipher acting like a block cipher
d)
The counter decreases by one from one block to the next
24.
GCM and GMAC are given their names after which famous mathematician?
a)
Galois
b)
Gauss
c)
Germain
d)
Gadella
25.
What are the two forms of authenticated modes of operations?
a)
Single-sided and mutual
b)
Dual and unilateral
c)
Disconnected and mutual
d)
Single-sided and double-sided
26.
Authenticated modes of encryption validate the integrity of the ciphertext, verifying it has not been modified.
a)
True
b)
False
27.
What is a mode of operation?
a)
An algorithm used with a block cipher to make an encryption algorithm
b)
Determining whether the game difficulty is easy, medium, hard, or impossible
c)
Choosing whether to work with traditional medicine or black magic
d)
The choice on boot between running in BIOS or loading the OS
28.
Which of the following is true about CTR mode?
a)
It is a block cipher acting like a stream cipher
b)
It authenticates and encrypts at the same time
c)
It is a stream cipher acting like a block cipher
d)
The counter decreases by one from one block to the next
29.
What is a blockchain?
a)
a distributed and immutable public ledger
b)
A chain of block ciphers
c)
A series of encryption algorithms designed to secure governmental data
d)
None of the above
30.
What is steganography?
a)
The practice of hiding information in ways to prevent the detection of hidden messages
b)
The practice and study of writing or solving codes
c)
The practice of graphing a Stegosaurus drinking eggnog, but only in September in Europe
d)
The process of assigning a code to something for the purposes of classification or identification
31.
What does the Greek word steganos mean?
a)
Covered
b)
Graphing
c)
Writing
d)
Staggered
32.
What does the Greek word graphia mean?
a)
Writing
b)
Staggered
c)
Covered
d)
Graphing
33.
What is obfuscation?
a)
The art of making something obscure, unclear, or unintelligible
b)
The state of being unknown, inconspicuous, or unimportant
c)
An arrangement or rearrangement of the members of a set into a sequence or linear order
d)
A philosopher known for Obfuscationism
34.
What does TCP stand for?
a)
Transmission Control Protocol
b)
Testifying to Congress in Private
c)
Trichloramine Phosphate
d)
Technical Cipher Program
35.
Which of the following is NOT considered when implementing cryptographic techniques?
a)
Economic status
b)
Latency
c)
Resiliency
d)
Power consumption
36.
What is confidentiality?
a)
Secrecy
b)
Informant
c)
Smugness
d)
Blurriness
37.
What is integrity?
a)
Protecting information from being modified by unauthorized parties
b)
Having strong moral principles/being honest
c)
A function of which another given function is the derivative
d)
Assurance that a job will be completed without the need for micromanagement
38.
What is obfuscation?
a)
Hiding data so it is not visible to the average viewer
b)
Encoding information so it can't be found through reverse psychology
c)
Making data so unintelligible an encryption is unable to be performed
d)
Decrypting data by blocks of the same size
39.
What is authentication?
a)
Confirmation
b)
Declaration
c)
Testimonial
d)
Unsubstantiation
40.
What is the assurance that someone can't dispute a contract or deny the authenticity of their digital signature?
a)
Non-repudiation
b)
Adjudication
c)
Intrepidation
d)
A weight off my shoulders
41.
When planning the implementation of a cryptographic system, what two constraints must be "balanced"?
a)
Resource and security
b)
Encryption and decryption
c)
Time and money
d)
Cipher and key exchange
42.
Which of the following is NOT a cryptography limitation hindered by being too large?
a)
Longevity
b)
Time
c)
Speed
d)
Size
43.
Until a key has been compromised, there is no need to update to a more secure one.
a)
False
b)
True
44.
If the creator of the key has known preferences, which of the following cryptography limitations must be considered?
a)
Predictability
b)
Size
c)
Reuse
d)
Speed
45.
Which of the following attacks is a concern if keys are reused?
a)
All of the above
b)
Passive decryption
c)
Impersonation
d)
MitM
46.
______ refers to the randomness collected by a system for use in algorithms that require random data
a)
Entropy
b)
Enthalpy
c)
Order
d)
Chaos
47.
A(n) ______ is a structured, organized storage and retrieval system for data
a)
database
b)
field
c)
array
d)
gate
48.
Which of the following is housed in a database?
a)
All of the above
b)
Netflix streaming videos
c)
Google search query
d)
Car dealer's website
49.
______ is the process of turning meaningful data into a random string of characters.
a)
Tokenization
b)
Obfuscation
c)
Steganography
d)
Adjudication
50.
Tokenization and encryption are similar because they both use mathematical algorithms to transform the data.
a)
False
b)
True
51.
What is the term given to a tokenization database?
a)
Token vault
b)
Token keeper
c)
Token array
d)
Token field
52.
What is a hash used for?
a)
All of the above
b)
Digital signatures
c)
Databases
d)
Passwords
53.
What is a quantum?
a)
The least amount of any physical entity required for an interaction
b)
The state of reference for any state of interaction
c)
The distance between particles
d)
The amount of time necessary for light to travel one parsec
54.
Quantum ______ is area of study relating information science to quantum effects.
a)
information science
b)
mechanics
c)
field theory
d)
decay
55.
Quantum ______ is a field of applied quantum physics related to both quantum information processing and quantum teleportation.
a)
communications
b)
mechanics
c)
field theory
d)
string law
56.
Quantum ______ uses quantum phenomena to perform computations.
a)
computing
b)
mechanics
c)
information science
d)
communications
57.
What do we call a computer that can perform quantum computing?
a)
Quantum computer
b)
Einstein computer
c)
NextGenPC
d)
AIOS
58.
What is quantum cryptography?
a)
Using quantum phenomena to perform cryptography
b)
Finding the largest prime number
c)
Using algorithms, known as QC4s, to encrypt messages
d)
Using quantum computers to attack current systems
59.
______ cryptography refers to cryptographic algorithms thought secure against attacks orchestrated by a quantum computer.
a)
Post-quantum
b)
Bose-Einstein
c)
Planck
d)
Neo-quantum
60.
Using which algorithm would a quantum computer dissect the three problems that popular algorithms rely on?
a)
Shor's
b)
Greedy
c)
Kadane's
d)
SchreierSims
61.
Which of the following is NOT one of the three problems used to make cryptographic algorithms?
a)
Finite sub-space
b)
Elliptic-curve discrete logarithm
c)
Discrete logarithm
d)
Integer factorization
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