The answer is a retention policy, off-site storage, and a defined recovery point objective. A retention policy is essential because it dictates how long backup copies are kept, directly governing the data lifecycle to prevent premature deletion or indefinite storage, which wastes resources and risks compliance. Off-site storage ensures data survives a local disaster, while a recovery point objective defines the maximum acceptable data loss, guiding backup frequency. On the CompTIA Project+ PK0-005 exam, this question tests your understanding that a backup strategy is not just about copying data—it must include lifecycle management, geographic redundancy, and measurable recovery targets. A common trap is selecting “full backup” as a component, but that is a method, not a strategic component. Remember the mnemonic “R.O.S.”—Retention, Off-site, and Scope (RPO)—to recall the three pillars of a comprehensive backup strategy.
PK0-005 Practice Question: Basics of IT Infrastructure and IT Project Management
This PK0-005 practice question tests your understanding of basics of it infrastructure and it project management. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A project to implement a new backup solution. Which THREE components are essential for a comprehensive backup strategy? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Retention policy
A retention policy is essential because it defines how long backup copies are kept, ensuring compliance with legal or operational requirements and enabling recovery to specific points in time. Without a retention policy, backups may be deleted too early (causing data loss) or retained indefinitely (wasting storage). It directly governs the lifecycle of backup data, which is a core component of any comprehensive backup strategy.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Retention policy
Why this is correct
A retention policy specifies how long backup data is kept to meet compliance and recovery needs.
Related concept
Read the scenario before looking for a memorised answer.
✗
Compression
Why it's wrong here
Compression reduces storage space but is not a core component of a backup strategy.
✗
Replication
Why it's wrong here
Replication is used for real-time data mirroring, not traditional backup.
✓
Backup scheduling
Why this is correct
Scheduling ensures backups occur consistently and automatically.
Related concept
Read the scenario before looking for a memorised answer.
✓
Off-site storage
Why this is correct
Off-site storage protects backups from physical disasters at the primary location.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between 'essential components' (like retention policy, scheduling, and off-site storage) and 'optional enhancements' (like compression and replication), leading candidates to mistakenly include replication as a core requirement when it is actually a separate disaster recovery technique.
Detailed technical explanation
How to think about this question
A retention policy typically uses a grandfather-father-son (GFS) rotation scheme, where daily, weekly, monthly, and yearly backups are retained for different durations. For example, a common policy might keep daily backups for 7 days, weekly for 4 weeks, and monthly for 12 months. This ensures that recovery point objectives (RPOs) are met while managing storage costs. Off-site storage, often implemented via tape vaulting or cloud replication, protects against site-level disasters like fire or flood.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the PK0-005 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Basics of IT Infrastructure and IT Project Management — This question tests Basics of IT Infrastructure and IT Project Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Retention policy — A retention policy is essential because it defines how long backup copies are kept, ensuring compliance with legal or operational requirements and enabling recovery to specific points in time. Without a retention policy, backups may be deleted too early (causing data loss) or retained indefinitely (wasting storage). It directly governs the lifecycle of backup data, which is a core component of any comprehensive backup strategy.
What should I do if I get this PK0-005 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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