Practice Library
All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
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Correct Answer: D. Risk management identifies uncertain events, estimates impact and plans mitigation or response
Explanation:
Proactive risk work helps teams reduce likelihood, impact or recovery time.
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Correct Answer: D. Architecture decisions balance performance, cost, reliability and workload requirements
Explanation:
System design requires trade-offs among processor, memory, storage, I/O, cost and reliability.
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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: D. Encapsulation groups data with methods and controls access to internal state
Explanation:
Encapsulation supports modular design by hiding implementation details behind a defined interface.
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Correct Answer: B. 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: A. 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: 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: 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. 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: D. 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: C. Users and processes should receive only the permissions necessary for their tasks
Explanation:
Limiting permissions reduces the impact of mistakes and compromised accounts.