Which of the following is NOT an example of the threat: Deviations in Quality of Service?

Question

BlackTom AI · Accepted Answer

Question restatement: The prompt asks which option is NOT an example of the threat described as Deviations in Quality of Service (QoS).
Option 1: 'Failure of service at an ISP' — This directly matches a QoS deviation, since the user experience is degraded or service is unavailable, which is precisely the kind of disruption QoS aims to describe.
Option 2: 'Power outage' — A power outage can undermine QoS by taking systems offline or causing performance bottlenecks, so it is consistent with QoS deviation concerns.
Option 3: 'Failure of a 3rd party multi-factor authentication service' — If an external authentication service fails, it can prevent users from accessing services, creating a QoS impact such as slowness, timeouts, or outages for legitimate users, aligning with QoS deviation scenarios.
Option 4: 'Fire from a lightning strike' — This event is a physical disaster or environmental incident. While it can affect IT infrastructure, the phrase describes a one-time, external catastrophe rather than a sustained deviation in service quality or performance metrics. It is more about an incident type rather than a typical QoS degradation event.
Option 5: 'Mobile phone carrier outage' — A carrier outage can disrupt connectivity, leading to degraded or lost service, which falls under QoS deviations since it affects users’ ability to reach or use services reliably.
In analyzing the intent of Deviations in Quality of Service, the most fitting examples are those that directly cause measurable changes in service performance, availability, or reliability. Physical disasters like a fire caused by a lightning strike are discrete, external incidents that may trigger broader outages, but they are not, by themselves, a typical example of a sustained QoS deviation category. The other options describe failures or outages that align with QoS measurement concerns and service performance.

CSE 4471 AU2025 (5629) Exam 1 - Requires Respondus LockDown Browser

Which of the following is NOT an example of the threat: Deviations in Quality of Service?

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