MCQ Collection
NCRE Level 3 MCQs
Practice NCRE Level 3 questions with answers and explanations.
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Correct Answer: C. A transaction groups operations so consistency can be preserved across success or failure
Explanation:
Transaction properties help preserve consistent state when multiple operations must succeed together or be rolled back.
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Correct Answer: B. An operating system manages hardware resources and provides services to applications
Explanation:
Operating systems coordinate processes, memory, storage, devices and user/application interfaces.
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Correct Answer: C. Users and processes should receive only the permissions necessary for their tasks
Explanation:
Limiting permissions reduces the impact of mistakes and compromised accounts.
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Correct Answer: A. Routers forward packets between networks using destination information and routing decisions
Explanation:
Routing selects network paths and forwards packets toward their destination networks.
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Correct Answer: A. A transaction groups operations so consistency can be preserved across success or failure
Explanation:
Transaction properties help preserve consistent state when multiple operations must succeed together or be rolled back.
Choose an option to check your answer.
Correct Answer: A. Routers forward packets between networks using destination information and routing decisions
Explanation:
Routing selects network paths and forwards packets toward their destination networks.
Choose an option to check your answer.
Correct Answer: C. A transaction groups operations so consistency can be preserved across success or failure
Explanation:
Transaction properties help preserve consistent state when multiple operations must succeed together or be rolled back.
Choose an option to check your answer.
Correct Answer: C. An operating system manages hardware resources and provides services to applications
Explanation:
Operating systems coordinate processes, memory, storage, devices and user/application interfaces.
Choose an option to check your answer.
Correct Answer: C. Normalisation reduces avoidable redundancy and update anomalies
Explanation:
Normalisation decomposes data structures to improve consistency while preserving meaningful dependencies.
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Correct Answer: D. IP handles addressing and routing, while TCP provides reliable ordered delivery for a connection
Explanation:
The Internet protocol suite separates network-layer routing from transport-layer reliability.
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Correct Answer: D. DNS maps human-readable domain names to network-related records such as IP addresses
Explanation:
The Domain Name System is a distributed naming service used to resolve domains.
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Correct Answer: C. An operating system manages hardware resources and provides services to applications
Explanation:
Operating systems coordinate processes, memory, storage, devices and user/application interfaces.
