Cryptography and Network Security Overview

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Questions and Answers

What is the main purpose of symmetric encryption?

Protecting blocks of data from alteration
Concealing the contents of blocks or streams of data of any size (correct)
Authenticating the identity of entities
Concealing small blocks of data used in digital signatures

What is the primary function of data integrity algorithms?

Concealing the contents of blocks or streams of data of any size
Concealing small blocks of data used in digital signatures
Protecting blocks of data from alteration (correct)
Authenticating the identity of entities

According to the NIST Computer Security Handbook, what does computer security aim to attain?

Ensuring privacy and data confidentiality
Verifying the authenticity and accountability of users
Assuring that systems work promptly and service is not denied to authorized users
Preserving the integrity, availability, and confidentiality of information system resources (correct)

What is the main objective of data confidentiality?

<p>Assuring that private or confidential information is not made available or disclosed to unauthorized individuals (A)</p> Signup and view all the answers

What does system integrity assure?

<p>That a system performs its intended function in an unimpaired manner, free from deliberate or inadvertent unauthorized manipulation of the system (D)</p> Signup and view all the answers