Chapter 21.1 Quiz

Which element of secure communication ensures only authorized users can read the message?

• Data Integrity

• Origin Authentication

• Data Confidentiality

• Data Non-Repudiation

What is the role of data non-repudiation?

• To encrypt the message

• To ensure the message was not altered

• To prevent the sender from denying the message

• To verify the sender's identity

What is the primary use of cryptography in data communication?

• To compress data

• To encrypt data

• To store data

• To delete data

What is the analogy used to describe a one-way function in hashing?

• Grinding coffee beans

• Boiling water

• Melting ice

• Baking bread

What is the result of a hash function called?

• Message digest

• Encryption key

• Data packet

• Compression code

What is the primary purpose of a cryptographic hash function?

• To encrypt data

• To compress data

• To ensure data integrity

• To generate random numbers

Which equation is used to explain how a hash algorithm operates?

• h = H(x)

• h = x + H

• H = h(x)

• x = H(h)

Which hash function is considered a legacy algorithm and should be avoided?

• SHA-2

• MD5

• SHA-3

• SHA-256

Who developed the MD5 hash function?

• U.S. National Security Agency

• Ron Rivest

• IBM

• Microsoft

Which hash function was developed by the NSA in 1995?

• SHA-1

• SHA-2

• MD5

• SHA-3