Cyber Security Cyber Security 3

Question 1

What is the main goal of a denial-of-service (DoS) attack?

Accepted Answer

To make a service or resource unavailable to legitimate users

Answer

A DoS attack overwhelms a system with traffic or requests so legitimate users cannot access it.

Question 2

Which encryption type uses the same key for both encryption and decryption?

Accepted Answer

Symmetric encryption

Answer

Symmetric encryption relies on a single shared secret key for both operations.

Question 3

What is a zero-day vulnerability?

Accepted Answer

A flaw unknown to the vendor with no available patch

Answer

A zero-day is a security flaw that is unknown to those who should fix it, leaving no patch available.

Question 4

Which practice helps protect against password-based attacks the most?

Accepted Answer

Using unique, complex passwords with a password manager

Answer

Unique complex passwords managed by a password manager limit the damage if one credential leaks.

Question 5

What does the acronym DDoS stand for?

Accepted Answer

Distributed Denial of Service

Answer

A DDoS attack uses many compromised systems to flood a target simultaneously.

Cyber Security Practice Test