Which of the following is most affected by denial-of-service (DoS) attacks?

A.
Confidentiality

B.
Integrity

C.
Accountability

D.
Availability

Explanation:
Denial-of-service (DoS) attacks are attacks that prevent a system from processing or responding to legitimate
traffic or requests for resources and objects. This type of attack makes the system unavailable.
Incorrect Answers:
A: Denial-of-service (DoS) attack main effect is not confidentiality, it is availability.
B: Denial-of-service (DoS) attack main effect is not integrity, it is availability.
C: Denial-of-service (DoS) attack main effect is not integrity, it is accountability.

Stewart, James M., Ed Tittel, and Mike Chapple, CISSP: Certified Information Systems Security Professional
Study Guide, 5th Edition, Sybex, Indianapolis, 2011, p. 64