Computer Studies 2022 Jamb Examination
Question 11
Primary memory, main memory, and internal memory all refer to internal storage within the computer system, such as RAM. External memory, on the other hand, refers to removable or outside storage devices such as USB drives or external hard disks. Therefore, it does not belong to the group.
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Question 12
Non-volatile storage retains data even after power is turned off. Examples include hard drives, SSDs, and flash drives. Volatile storage such as RAM loses all data once power is cut off. Sequential and direct storage refer to methods of accessing data, not persistence after power loss.
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Question 13
Inventory management software is designed to support multiple business functions, including distribution of goods, purchasing of stock, and planning for future needs. Since it integrates all these processes to ensure efficiency, the correct answer is all of the above.
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Question 14
Version numbers in software indicate progress. A shift from 1.x to 2.0 usually represents a major upgrade, including significant new features, improved performance, or changes in functionality. Incremental changes like 1.5 or 2.5 suggest minor improvements rather than a complete overhaul.
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Question 15
Encryption secures communication by converting readable information into coded data that can only be understood by authorized parties. This ensures safe delivery of messages and prevents interception or tampering by third parties, thereby protecting confidentiality and integrity.
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Question 16
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Question 17
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Question 18
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Question 19
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Question 20
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