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Computer Organization And Architecture Exam Questions With Verified Answers. A+ Grade 2025/2026.

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COMPUTER ORGANIZATION AND ARCHITECTURE EXAM QUESTIONS WITH VERIFIED ANSWERS. A+ GRADE 2025/2026.

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COMPUTER ORGANIZATION AND
ARCHITECTURE EXAM QUESTIONS
WITH VERIFIED ANSWERS. A+ GRADE
2025/2026.




Computer Components - ANS Motherboard, Hard Drive (HDD), Random Access Memory

(RAM), Processor, PCI Cards




Central Processing Unit (CPU) - ANS The computer component responsible for fetching

instructions, decoding them, and performing the indicated sequence of operations on the

correct data. The CPU consists of:


Arithmetic Logic Unit


Registers


Control unit.

1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED

, Arithmetic Logic Unit (ALU) - ANS The combinational circuit responsible for performing the

arithmetic and logic functions in a CPU.




Scheduling Algorithms - ANS Definition: Pre-emptive - Scheduler may pre-empt a processor

before it is blocked or terminated


Algorithms:


First Come First served


Jobs processed in order they are received


Favours CPU bound processes


I/O bound process execute briefly then are blocked for I/O


Queue builds up of I/O Bound processes




Algorithms - Shortest Job First - ANS Can starve long jobs of CPU time


In case of a tie FCFS used




Algorithms - Shortest Time Remaining - ANS Pre-emptive


New job arrives -> expected process time compared with that of currently Running Process.

2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED

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