Question 1

What type of attack intercepts communication between two parties without either party knowing, allowing the attacker to read or alter data in transit?

Accepted Answer

A Man-in-the-Middle (MitM) attack. The attacker secretly relays and potentially modifies communications between two hosts who believe they are communicating directly.

Question 2

What is a DNS poisoning (cache poisoning) attack?

Accepted Answer

An attack where malicious DNS records are injected into a resolver's cache, causing clients to be redirected to fraudulent IP addresses instead of legitimate destinations.

Question 3

What distinguishes a DDoS attack from a standard DoS attack?

Accepted Answer

A DDoS (Distributed Denial-of-Service) attack uses multiple compromised systems (a botnet) to flood a target simultaneously, whereas a DoS attack originates from a single source.

Question 4

What is an ARP poisoning attack and which layer does it target?

Accepted Answer

ARP poisoning sends forged ARP replies to associate the attacker's MAC address with a legitimate IP address, redirecting traffic. It targets Layer 2 (Data Link layer) of the OSI model.

Question 5

What is a VLAN hopping attack?

Accepted Answer

A VLAN hopping attack allows an attacker to send traffic to a VLAN they are not authorized to access, typically by exploiting switch spoofing or double tagging IEEE 802.1Q frames.

Network Security – CompTIA Network+ Certification

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