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Operating System
1081
Computer Science Fundamentals
998
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OS Protection
When an attempt is to make a machine or network resource unavailable to its intended users, the attack is called _____________
denial-of-service attack
slow read attack
spoofed attack
starvation attack
Author:
rikazzz
Comment
OS Mass-Storage Structures
The data structure for a sector typically contains ____________
header
data area
trailer
all of the mentioned
Author:
rikazzz
Comment
Computer Science Fundamentals
Brain of computer is ____________
Control unit
Arithmetic and Logic unit
Central Processing Unit
Memory
The CPU is referred to as the brain of a computer.
Author:
rikazzz
Comment
OS Deadlocks
To avoid deadlock ____________
there must be a fixed number of resources to allocate
resource allocation must be done only once
all deadlocked processes must be aborted
inversion technique can be used
Author:
rikazzz
Comment
Computer Science Fundamentals
Which of the following is not a magnetic disk?
Floppy
Winchester
Zip
FLASH
Flash drives are a type of memory storage devices. It is a relatively newer type of secondary storage device which enables easy transfer of data from one computer to another.
Author:
rikazzz
Comment
Computer Science Fundamentals
Which of the following is not a function of the Output Unit?
It produces results that can be easily understood by the user
It accepts the results produced by the computer
It supplies the data and instructions to the outside world
It supplies the data and instructions to the computer for further processing
The output unit is responsible for giving the results to the user in the form of a printed report or visual display. It is not responsible for giving the instructions back to the CPU for processing.
Author:
rikazzz
Comment
OS The Linux System
In FIFO page replacement algorithm, when a page must be replaced ____________
oldest page is chosen
newest page is chosen
random page is chosen
none of the mentioned
Author:
rikazzz
Comment
OS Real Time Operating Systems(RTOS)
The technique in which the CPU generates physical addresses directly is known as ____________
relocation register method
real addressing
virtual addressing
none of the mentioned
Author:
rikazzz
Comment
Computer Science Fundamentals
The cell that is in use.
Highlighted cell
Main cell
Active cell
Formula cell
It is called the active cell. The address of the active cell is shown in the formula bar.
Author:
rikazzz
Comment
Computer Science Fundamentals
Optical disks are proved to be a promising random access medium for high capacity secondary storage.
True
False
Optical disks can store large amounts of data. The storage capacity depends on the sectors and the number of bytes.
Author:
rikazzz
Comment
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