ITIL4F ITIL Management Practices Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  Scheduled maintenance

  Why it's wrong here

  Scheduled maintenance refers to pre-arranged activities, such as system checks, preventative repairs, or routine updates, that are planned and communicated in advance. Because these activities are intentionally timed and often occur during designated maintenance windows, they represent planned downtime. This allows for proper resource allocation and stakeholder notification, distinguishing it clearly from unexpected service interruptions.

• ✓

  Hardware failure

  Why this is correct

  Hardware failure, such as a disk crash, power supply malfunction, or memory error, is inherently an unplanned event that can lead to service disruption. These incidents occur without prior warning, necessitating immediate reactive measures to restore service functionality. The unpredictable nature of component breakdown makes it a prime example of unplanned downtime, directly impacting system availability without prior scheduling.

• ✓

  Cyberattack causing service disruption

  Why this is correct

  A cyberattack, including ransomware, denial-of-service (DoS) attacks, or data breaches, constitutes an external, malicious, and entirely unplanned event that can severely disrupt IT services. Organizations cannot foresee the exact timing or nature of such attacks, making the resulting service disruption an unexpected outage. Responding to a cyberattack requires immediate incident management and recovery efforts, classifying it as a critical form of unplanned downtime.

• ✗

  Planned upgrade of a server

  Why it's wrong here

  A planned upgrade of a server involves a deliberate, pre-scheduled activity to enhance system capabilities, apply patches, or replace components. This process is typically communicated to users and stakeholders well in advance, often occurring during off-peak hours to minimize impact. Since the timing and scope of the upgrade are determined and approved beforehand, it falls under the category of planned downtime, distinct from sudden, unexpected outages.

• ✓

  Software bug causing service outage

  Why this is correct

  A software bug that causes a service outage is an unexpected defect in code that manifests during operation, leading to system instability or complete failure. While software testing aims to minimize bugs, critical defects can evade detection and surface unpredictably in production environments. The resulting service disruption is unplanned because the precise timing and impact of the bug's manifestation cannot be foreseen or scheduled, requiring urgent incident resolution.

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