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Operating System
1081
Computer Science Fundamentals
998
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OS Process Synchronization
how many different values of X are possible after both processes finish executing?
one
two
three
four
The semaphore T ensures that all the statements from A finish execution before B begins. So now there is only one way in which statements from A and B can be interleaved: A1 A2 B1 B2: X = 11.
Author:
rikazzz
Comment
Computer Science Fundamentals
VDU stands for __________
Virtual Display Unit
Visual Display Unit
Virtual Detection Unit
Visual Detection Unit
A Visual Display unit is also referred to as the monitor who basically is used to give the results or outputs to the user. It comprises of a cathode ray tube internally.
Author:
rikazzz
Comment
OS File Systems and Their Implementation
Indexed allocation _________ direct access.
supports
does not support
is not related to
none of the mentioned
Author:
rikazzz
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OS Mass-Storage Structures
The solution to the problem of reliability is the introduction of __________
aging
scheduling
redundancy
disks
Author:
rikazzz
Comment
OS Distributed Communication
A parent process calling _____ system call will be suspended until children processes terminate.
wait
fork
exit
exec
Author:
rikazzz
Comment
OS Process Synchronization
An actual update is not allowed to a data item ____________
before the corresponding log record is written out to stable storage
after the corresponding log record is written out to stable storage
until the whole log record has been checked for inconsistencies
all of the mentioned
Author:
rikazzz
Comment
Computer Science Fundamentals
The output unit converts the data entered by the user into computer understandable form.
True
False
The Output unit is responsible for converting the computer obtained data into user understandable format. The Input Unit is responsible for converting the data in computer understandable format.
Author:
rikazzz
Comment
Computer Science Fundamentals
Anonymous FTP files are called ___________ accessible files.
Privately
Publicly
Batch
User
Anonymous FTP files are called publicly accessible files because they can be accessed by any user on the Internet.
Author:
rikazzz
Comment
Computer Science Fundamentals
A testing conducted at the developer’s site under validation testing.
alpha
gamma
lambda
unit
Alpha testing is conducted at developer’s site. It is conducted by customer in developer’s presence before software delivery.
Author:
rikazzz
Comment
OS Memory Management
Swapping _______ be done when a process has pending I/O, or has to execute I/O operations only into operating system buffers.
must
can
must never
maybe
Author:
rikazzz
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