WorksheetsCSF - Chapter 4 - 2024
Total questions: 39
Worksheet time: 1hrs 18mins
What type of cipher encrypts plaintext one byte or one bit at a time?
block
hash
stream
elliptical
Which 128-bit block cipher encryption algorithm does the US government use to protect classified information?
3DES
Vignere
AES
Skipjack
What encryption algorithm uses the same pre-shared key to encrypt and decrypt data?
asymmetric
hash
symmetric
one-time pad
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?
deterrent
detective
preventive
masking
What term is used to describe the technology that replaces sensitive information with a nonsensitive version?
blanking
=hiding
retracting
whiteout
masking
Which three processes are examples of logical access controls? (Choose three.)
guards to monitor security screens
swipe cards to allow access to a restricted area
intrusion detection system (IDS) to watch for suspicious network activity
biometrics to validate physical characteristics
firewalls to monitor traffic
Which three protocols use asymmetric key algorithms? (Choose four.)
Internet Key Exchange (IKE)
Secure Socket Layer (SSL)
Secure Shell (SSH)
Pretty Good Privacy (PGP)
Secure File Transfer Protocol (SFTP)
Which asymmetric algorithm provides an electronic key exchange method to share the secret key?
RSA
DES
WEP
Diffie-Hellman
hashing
Which three devices represent examples of physical access controls? (Choose three.)
locks
servers
video cameras
swipe cards
routers
What are three examples of administrative access controls? (Choose three.)
policies and procedures
encryption
hiring practices
intrusion detection system (IDS)
background checks
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?
stream
hash
transform
block
Which term describes the technology that protects software from unauthorized access or modification?
access control
watermarking
trademark
copyright
What term is used to describe concealing data in another file such as a graphic, audio, or other text file?
steganography
masking
obfuscation
hiding
What encryption algorithm uses one key to encrypt data and a different key to decrypt data?
transposition
symmetric
one-time pad
asymmetric
Match the following
a fingerprint scan
Something you are
a password
Something you know
a security key fob
Something you have
What cryptographic algorithm is used by the NSA and includes the use of elliptical curves for digital signature generation and key exchange?
El-Gamal
ECC
IDEA
RSA
Match the description with the correct term.
making a message confusing so it is harder to understand
obfuscation
steganalysis
steganography
social steganography
Match the description with the correct term.
discovering that hidden information exists within a graphic file
obfuscation
steganalysis
steganography
social steganography
Match the description with the correct term.
hiding data within an audio file
obfuscation
steganalysis
steganography
social steganography
Match the description with the correct term.
creating a message that says one thing but means something else to a specific audience
obfuscation
steganalysis
steganography
social steganography
What is the term used to describe the science of making and breaking secret codes?
jamming
factorization
cryptology
impersonation
What is the name of the method in which letters are rearranged to create the ciphertext?
enigma
one-time pad
transposition
substitution
Which two terms are used to describe cipher keys? (Choose two.)
key space
key length
key randomness
keylogging
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)
What type of cipher encrypts plaintext one byte or one bit at a time?
(a)
What is the primary purpose of cryptography?
To create secret codes for historical documents
To control access to buildings and rooms
To encrypt or decrypt information for secure storage and transmission
To generate one-time passwords for authentication
What is the main difference between symmetric and asymmetric encryption?
Symmetric encryption is faster but less secure than asymmetric encryption
Asymmetric encryption uses the same key for both encryption and decryption
Symmetric encryption uses a pair of unrelated keys
Asymmetric encryption is more efficient for encrypting large blocks of data
Which encryption algorithm is commonly used in the electronic payment industry?
AES
RSA
3DES
Blowfish
What is the purpose of a virtual private network (VPN)?
To encrypt messages using the Caesar cipher
To control access to a building or system
To provide online privacy and anonymity by creating a secure connection
To generate one-time passwords for authentication
What does Physical Access Control primarily focus on?
Authenticating users
Restricting access to physical spaces
Managing data encryption
Monitoring network traffic
Which of the following is an example of Logical Access Control?
Security alarms
Motion detectors
Password-coded doors
Fob-controlled gates
What is the main purpose of Role-Based Access Control (RBAC)?
Controlling physical access
Assigning permissions based on job functions
Restricting access to network traffic
Implementing security audits
In the context of access control, what does Identification involve?
Checking user credentials
Determining access authorization
Tracing user activity
Establishing rules for security policies
What does Authentication, Authorization, and Accounting (AAA) primarily contribute to in network management and cybersecurity?
Physical access control
Managing data encryption
Screening users, enforcing policies, and auditing usage
Implementing security alarms
What is the primary purpose of data masking technology?
a) To replace sensitive information with random values
b) To encrypt all data in non-production environments
c) To dynamically mask data in production environments
d) To replace sensitive information with a non-sensitive version
Which data masking technique involves replacing data with authentic-looking values for anonymity?
Shuffling
Nulling out
Substitution
Obfuscation
What is the advantage of steganography over cryptography?
Steganography is more secure
Steganography attracts special attention
Steganography hides data in plain sight
Steganography requires a stego-key
How does LSB (Least Significant Bits) work in steganography?
It uses the most significant bits of each pixel
It changes all bits in an image
It changes bits only in the red color component
It uses bits of each pixel, making changes difficult to detect
The goal of (a) is to detect hidden information.
