Cyber Security Network Security 3

Question 1

What is the purpose of NAC (Network Access Control)?

Accepted Answer

Enforce security policies before granting network access

Answer

NAC evaluates endpoint compliance with security policies before granting access to the network.

Question 2

Which DNS attack involves redirecting domain queries to malicious IP addresses by corrupting the DNS cache?

Accepted Answer

DNS cache poisoning

Answer

DNS cache poisoning injects malicious records into a DNS resolver's cache, redirecting users to attacker-controlled servers.

Question 3

What is the primary difference between a hub and a switch in network security?

Accepted Answer

A switch sends traffic only to the intended recipient; a hub broadcasts to all ports

Answer

Switches use MAC address tables to send frames only to the correct port, reducing unnecessary traffic exposure.

Question 4

What does a botnet primarily enable attackers to do?

Accepted Answer

Conduct distributed attacks using compromised machines

Answer

A botnet is a network of compromised devices controlled remotely, often used for DDoS attacks or spam campaigns.

Question 5

Which tool is commonly used for packet capture and network traffic analysis?

Accepted Answer

Wireshark

Answer

Wireshark is a widely used open-source tool for capturing and analyzing network packets.

Cyber Security Practice Test