Quick Answer
The correct choice is the Underpinning Contract (UC). This is because an Underpinning Contract is the formal agreement used between a service provider and an external third-party supplier, such as a data center, to define specific requirements like availability targets. In contrast, an Operational Level Agreement (OLA) governs internal relationships between teams within the same organization, while a Service Level Agreement (SLA) is made with the external customer receiving the service. On the ITIL 4 Foundation exam, this question tests your ability to distinguish between these three key documents, and the most common trap is confusing an OLA with a UC since both support service delivery. A simple memory tip: think of the “U” in Underpinning Contract as standing for “Upstream” or “Outside” — it’s the contract you use with an external supplier, not with your own internal departments.
This ITIL4F practice question tests your understanding of itil management practices. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 service provider uses a third-party data center. They want to ensure the data center's availability meets their requirements. Which document should they use to define these requirements?
Operational Level Agreement (OLA)
Why wrong: OLA is an internal agreement between teams.
Underpinning Contract (UC)
UC is a contract with an external supplier.
Service Level Agreement (SLA)
Why wrong: SLA is between the provider and customer, not directly with the data center.
Service Improvement Plan (SIP)
Why wrong: SIP outlines improvements, not requirements.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Underpinning Contract (UC)
An OLA (Operational Level Agreement) is used between internal departments, not with external suppliers. For external suppliers, a contract or UC (Underpinning Contract) is used. Option C is correct. Option A is wrong because SLA is with the customer. Option B is wrong because OLA is internal. Option D is wrong because SIP is an improvement plan.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Operational Level Agreement (OLA)
Why it's wrong here
OLA is an internal agreement between teams.
Underpinning Contract (UC)
Why this is correct
UC is a contract with an external supplier.
Related concept
Read the scenario before looking for a memorised answer.
Service Level Agreement (SLA)
Why it's wrong here
SLA is between the provider and customer, not directly with the data center.
Service Improvement Plan (SIP)
Why it's wrong here
SIP outlines improvements, not requirements.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the ITIL4F 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
Identify which ITIL4F exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
ITIL Management Practices — This question tests ITIL Management Practices — Read the scenario before looking for a memorised answer..
The correct answer is: Underpinning Contract (UC) — An OLA (Operational Level Agreement) is used between internal departments, not with external suppliers. For external suppliers, a contract or UC (Underpinning Contract) is used. Option C is correct. Option A is wrong because SLA is with the customer. Option B is wrong because OLA is internal. Option D is wrong because SIP is an improvement plan.
Identify which ITIL4F exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
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