Cybersecurity Essentials Chapter 4 Quiz Questions Answers

Cybersecurity Essentials 1.1 Chapter 4 Quiz Answers Full Questions

Chapter 4: The Art of Protecting Secrets

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

• RSA
• Diffie-Hellman
• WEP
• DES
• hashing

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

• transposition
• symmetric
• asymmetric
• one-time pad

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

• block
• stream
• hash
• enigma
• elliptical

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

• ECC
• RSA
• AES
• El-Gamal
• IDEA

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

• factorization
• cryptology
• impersonation
• spoofing
• jamming

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

• intrusion detection system (IDS) to watch for suspicious network activity
• firewalls to monitor traffic
• guards to monitor security screens
• fences to protect the perimeter of a building
• swipe cards to allow access to a restricted area
• biometrics to validate physical characteristics

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

• masking
• hiding
• obfuscation
• steganography

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

• policies and procedures
• encryption
• background checks
• hiring practices
• intrusion detection system (IDS)
• guard dogs

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

• Secure File Transfer Protocol (SFTP)
• Telnet
• Pretty Good Privacy (PGP)
• Secure Shell (SSH)
• Advanced Encryption Standard (AES)
• Secure Sockets Layer (SSL)

10.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?

• masking
• deterrent
• detective
• preventive

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

• copyright
• watermarking
• access control
• trademark

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

• hash
• asymmetric
• one-time pad
• symmetric

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

• key space
• key randomness
• keylogging
• key length

14.Match the type of multifactor authentication with the description.

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

• substitution
• transposition
• one-time pad
• enigma

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

• Vignere
• AES
• Caesar
• 3DES
• Skipjack

17.Match the description with the correct term. (Not all targets are used.)

• steganography —> hiding data within an audio file
• steganalysis —> discovering that hidden information exists within a graphic file
• social steganography —> creating a message that says one thing but means something else to a specific audience
• obfuscation —> making a message confusing so it is harder to understand
• Other Incorrect Match Options:
  • replacing sensitive information in a file with nonsensitive information

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

• blanking
• whiteout
• masking
• retracting
• hiding

19. 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?

• transform
• stream
• hash
• symmetric
• block

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

• locks
• routers
• swipe cards
• firewalls
• servers
• video cameras