Telegram group: T.me/BBCNOUN
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CIT309
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1. _______ automatically retains a copy of some of the recently used words from the DRAM

	      Virtual memory

	--->> Cache memory

	      RAM

	      ROM

2. Which of the following scheduling algorithms defines Time quantum?

	--->> round robin scheduling algorithm

	      multilevel queue scheduling algorithm

	      shortest job scheduling algorithm

	      priority scheduling algorithm

3. Hard errors can be caused by the following EXCEPT.

	--->> alpha particles

	      manufacturing defects

	      harsh environmental abuse

	      manufacturing wear

4. early systems presented two main problems which were ______ and ______

	      Optimization and scheduling

	      Resource management and setup time

	--->> Scheduling and setup time

	      Optimization and setup time

5. External memory consists of the following peripheral storage devices EXCEPT?

	--->> Register

	      Hard disk

	      Flash drive

	      CD ROM

6. _______ is a permanent physical defect such that the memory cell or cells affected cannot reliably store data but become stuck at 0 or 1 or switch erratically between 0 and 1.

	      Binary error

	      software error

	      Kernal failure

	--->> hard failure

7. _______ is a random, nondestructive event that alters the contents of one or more memory cells without damaging the memory

	      kernal error

	      hard failure

	--->> soft error

	      burst error

8. A process is selected from the ______ queue by the ________ scheduler, to be executed.

	      ready, long term

	      blocked, short term

	--->> ready, short term

	      wait, long term

9. _______  is the number of bits read out of or written into memory at a time.

	      Word

	      Access time

	      Memory cycle time

	--->> Unit of transfer

10. ______ is used productively, with multiprogramming operating system.

	      I/O devices

	--->> Time

	      Money

	      Space