ITIL4F ITIL Management Practices Practice Question
An organization monitors IT systems and detects an event indicating that a disk is 80% full. According to ITIL 4, what type of event is this?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
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Warning event
Events are categorized as informational, warning, or exception. A disk at 80% capacity is a warning that may require attention, not yet an exception. Option B is correct. Option A (informational) is for routine notifications. Option C (exception) is for abnormal conditions. Option D (error) is not a standard event category.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Informational event
Why it's wrong here
An informational event signifies a normal operation or a routine occurrence within an IT system, such as a successful backup completion or a user login. These events typically do not require immediate intervention or raise concerns about service degradation. While they are recorded for audit trails or performance analysis, they do not indicate a potential or actual problem. Therefore, a generic "detection of an event" that implies monitoring for issues is unlikely to be merely informational.
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Warning event
Why this is correct
A warning event indicates a condition that is deviating from normal operational parameters but has not yet caused a service disruption or degradation. It serves as an early alert, signaling a potential future problem if left unaddressed, such as a disk approaching full capacity or high CPU utilization. Proactive intervention based on a warning event can prevent an actual incident, making it a critical classification for effective event management. The detection of an event that requires attention but isn't yet an incident aligns perfectly with a warning.
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Exception event
Why it's wrong here
An exception event signifies that a service or component is already operating outside its agreed-upon parameters, indicating an existing degradation or failure. Unlike a warning, an exception implies that a problem has already manifested, potentially impacting users or business processes. This classification suggests a more severe state requiring immediate investigation and resolution, rather than a pre-emptive alert about a potential issue. Therefore, a generic "detection of an event" without further context of degradation is not necessarily an exception.
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Error event
Why it's wrong here
While "error" is a common term in IT, it is not one of the three standard event classifications defined by ITIL 4 for event management. ITIL categorizes events as Informational, Warning, or Exception, each with a specific meaning regarding the state and potential impact on services. An "error" might fall under an exception event if it indicates a service failure, but "Error event" itself is not a formal ITIL classification. This distinction is crucial for consistent event management processes.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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