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✅ The correct answer is option B.
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403. The most common systems security method is
passwords
encryption
firewall
all of the above
✅ The correct answer is option A.
405. In which addressing mode the effective address of the operand is the contents of a register specified in the instruction and after accessing the operand, the contents of this register is incremented to point to the next item in the list?
index addressing
indirect addressing
auto increment
auto decrement
✅ The correct answer is option C.
407. Which of the following statement is true.
The LRU algorithm pages out pages that have been used recently
Thrashing is a natural consequence of virtual memory systems.
Seek analysis is used for analysing control-unit busy problems.
All of the above
✅ The correct answer is option C.
410. A co-processor
Is relatively easy to support in software
Causes all processor to function equally
Works with any application
Is quite common in modern computer
✅ The correct answer is option A.
413. Indicate which is a pre-emptive scheduling algorithm
Round-robin
Shortest-job-next
Priority-based
All of the above
✅ The correct answer is option A.
416. Which of the following is false about disk when compared to main memory?
non-volatile
longer storage capacity
lower price per bit
faster
✅ The correct answer is option D.
419. Which of the following is a disk compression tools?
Drive space
Defragmenter
Scandisk
None of the above
✅ The correct answer is option A.
422. A sequence of instructions, in a computer language, to get the desired result, is known as
Algorithm
Decision Table
Program
All of the above
✅ The correct answer is option C.
425. All the time a computer is switched on, its operating system software has to stay in
main storage
primary storage
floppy disk
disk drive
✅ The correct answer is option B.