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Operating Systems Assessment
Operating Systems Assessment
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GCSE Operating Systems Computer Science Systems Software
Flashcards
20 cards
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Questions
20
Answers
1
The interval from the time of submission of a process to the time of completion is termed as
waiting time
response time
turnaround time
throughput
2
Why might an operating system include a disk defragmentation utility?
To change the size of partitions on the disk
None of the above
To reorganise small amounts of unused disk space
To repair damaged sectors on a disk
3
What is a buffer?
An area of memory that is used to temporarily store data.
The part of RAM that is used to store the operating system.
None of the above.
Unused storage space on a hard disk
4
CPU fetches the instruction from memory according to the value of
program counter
status register
instruction register
program status word
5
Which of these is not a job of the operating system?
Stopping unauthorised users from accessing files
Handling HTTP requests for webpages.
All of the above
Allocating memory to programs that are running on the device
6
What best describes the computer's BIOS (basic input-output system)?
The operating system
Application software
Main memory
Firmware
7
Which type of operating system would be the best choice to control the braking system on a car?
Batch processing
Core i3 chips
Multi-processing
Real-time processing
8
When the computer has to react within a guaranteed time to an input, which type of OS is best?
Batch processing
Pre-processing
Multi-tasking
Real-time processing
9
Which is the fastest kind of memory for the CPU to access?
Random access memory
Level-2 cache memory
Read only memory
Level-1 cache memory
10
What kind of interface requires the user to type commands from a keyboard to give instructions?
Menu driven interface.
Graphical user interface.
Command line interface.
Tangible user interface.
11
Explain why having cache memory can improve the performance of the CPU?
Cache integrated into ALU
Frequently used instructions stored in cache: faster access
Cache bypasses the buses so faster access
Cache paging takes priority of main memory
12
How would we define a hierarchical file system as used by an operating system?
Organised in date order according to when each file created
None of the above
A tree with root & branches / directories that lead to files
Sorted in alphabetical order using an array of device names.
13
How does the operating system manage programs that are running?
Deletes programs from disk once their loaded into memory.
None of the above
It allocates free memory when a program requests it
Converts programs to machine code and begins their execution
14
How would you describe an operating system that's able to execute many programs simultaneously?
Embedded.
Real-time processing.
Multi-tasking.
Multi-processing.
15
State two ways of improving the performance of a CPU
Increase ROM
Increase secondary memory
Increase number of cores/processors;
Increase clock speed
16
What does device driver software do?
It holds documents that are waiting to be printed.
Ued to install new software applications on to your computer
None of the above.
It handles data transfers between the computer & a device
17
What hardware defines a computer?
CPU and storage
CPU and memory
CPU and GPU
Main memory and secondary memory
18
Why do many operating systems include a graphical user interface?
None of the above
Much quicker for people to perform tasks on the device
To make it easier for people to use the computer
So that advanced users can carry out more technical tasks
19
What is the main purpose of the file system?
To make backups of important files so they are not lost
Provides uniform way for programs to store and retrieve data
To recover files if you accidentally delete them
None of the above
20
What kind of software programs are free to use & also allow you to modify them the source code?
Open-source software
Freeware
Unix
Linux
