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Operating System
1081
Computer Science Fundamentals
998
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OS Mass-Storage Structures
The _______ program initializes all aspects of the system, from CPU registers to device controllers and the contents of main memory, and then starts the operating system.
main
bootloader
bootstrap
rom
Author:
rikazzz
Comment
Computer Science Fundamentals
If m is the 2’s complement and n is the binary number, then ______________
m=n’
m=n’+1
m=n’-1
m=n
2’s complement is simply obtained by addition of 1. So if n is the number and we take the 2’s complement, add 1 to it, we get the 2’s complement. Therefore, m=n’+1.
Author:
rikazzz
Comment
OS File Systems and Their Implementation
What is the mount point?
an empty directory at which the mounted file system will be attached
a location where every time file systems are mounted
is the time when the mounting is done
none of the mentioned
Author:
rikazzz
Comment
OS Protection
In asymmetric encryption _____________
same key is used for encryption and decryption
different keys are used encryption and decryption
no key is required for encryption and decryption
none of the mentioned
Author:
rikazzz
Comment
OS File Systems and Their Implementation
_______ and ________ are the most common strategies used to select a free hole from the set of available holes.
First fit, Best fit
Worst fit, First fit
Best fit, Worst fit
None of the mentioned
Author:
rikazzz
Comment
Computer Science Fundamentals
Which of the following interfacing IC is a DMA controller?
8257/37
8155
8253/54
8279
8155 is a multipurpose programmable I/O device. 8253/54 is a programmable counter. 8279 is a keyboard/display controller and 8257/37 is a DMA controller.
Author:
rikazzz
Comment
OS The Linux System
The first process launched by the linux kernel is ___________
init process
zombie process
batch process
boot process
Author:
rikazzz
Comment
OS Security
Which one of the following is not a secondary storage?
Magnetic disks
Magnetic tapes
RAM
None of the mentioned
Author:
rikazzz
Comment
Computer Science Fundamentals
____________ creates an inferior process that runs your program.
run
exit
execute
e
run or r command creates an inferior process that runs your program. If there are no errors the program will finish and results will be displayed accordingly.
Author:
rikazzz
Comment
Computer Science Fundamentals
The restrictions placed on the data.
Relation
Attribute
Parameter
Constraint
Constraint is a restriction that is placed on the data. Attribute is the characteristic and the relation describes the association.
Author:
rikazzz
Comment
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