491. In memory systems, boundary registers
are used for temporary program variable storage
are only necessary with fixed partitions
track page boundaries
track the beginning and ending of programs
✅ The correct answer is option D.
Operating System
492. In analyzing the compilation of PL/I program, the description “creation of more optimal matrix” is associated with
Assembly and output
Code generation
Syntax analysis
Machine independent optimization
✅ The correct answer is option D.
493. Linux is a(n) ……. operating system
Open source
Microsoft
Windows
Mac
✅ The correct answer is option A.
494. Assembler language
is usually the primary user interface
requires fixed-format commands
is a mnemonic form of machine language
is quite different from the SCL interpreter
✅ The correct answer is option C.
496. ……. is the layer of a computer system between the hardware and the user program
Operating environment
Operating system
System environment
None of these
✅ The correct answer is option B.
497. Which one is not a system tool?
Backup
Disk defragment
Virus scanning
All of the above
✅ The correct answer is option C.
499. You should save your computer from?
Viruses
Time bombs
Worms
All of the above
✅ The correct answer is option D.
500. Boot startup process
Loads system files to RAM
Checks the computer connections
Clean up the computer memory
Prepare the computer ready
✅ The correct answer is option A.