ITPEC IP October 2024 Question 59
ITPEC IP October 2024 — Question 59 of 100
Allowing the e-mail service to be used at any time except during defined maintenance hours is an availability requirement. Availability describes whether an authorized user can access and use a service when required. Stating the permitted service window and planned exclusions creates a measurable expectation that can be monitored and included in a service-level agreement.
Answer (b)
Why not others:
- (a) limiting the client to a browser describes an access method, not how often the service is operational
- (c) preventing unauthorized reading is a confidentiality requirement
- (d) preventing falsification is an integrity and authenticity requirement
Key rule: Availability concerns usable service time; confidentiality prevents unauthorized disclosure, and integrity prevents improper alteration.
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