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What are two denial-of-service (DoS) attacks? (Choose two)

A.

port scan

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A.

port scan

B.

SYN flood

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B.

SYN flood

C.

man-in-the-middle

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C.

man-in-the-middle

D.

phishing

Answers
D.

phishing

E.

teardrop

Answers
E.

teardrop

Suggested answer: B, E

Explanation:

SYN flood and teardrop are two types of denial-of-service (DoS) attacks, which aim to disrupt the availability of a service or a system by overwhelming it with malicious traffic or requests. A SYN flood attack exploits the TCP three-way handshake process by sending a large number of SYN packets to the target's port, without completing the connection. This causes the target to allocate resources for half-open connections, eventually exhausting its memory or bandwidth. A teardrop attack exploits the IP fragmentation process by sending malformed or overlapping IP fragments to the target, causing it to crash or reboot when trying to reassemble them.Reference:= Cisco Cybersecurity Operations Fundamentals, Module 1: Security Concepts, Lesson 1.3: Common Network Application Operations and Attacks, Topic 1.3.4: Denial-of-Service Attacks

asked 07/10/2024
karl hickey
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