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Operating System
1081
Computer Science Fundamentals
998
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Computer Science Fundamentals
A level that describes how a record is stored.
physical
logical
user
view
The answer is physical. The physical level describes how the record gets stored.
Author:
rikazzz
Comment
OS Process Synchronization
At a particular time of computation the value of a counting semaphore is 7.Then 20 P operations and 15 V operations were completed on this semaphore. The resulting value of the semaphore is? (GATE 1987)
42
2
7
12
P represents Wait and V represents Signal. P operation will decrease the value by 1 every time and V operation will increase the value by 1 every time.
Author:
rikazzz
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OS Mass-Storage Structures
Which one of the following connects high-speed high-bandwidth device to memory subsystem and CPU.
Expansion bus
PCI bus
SCSI bus
None of the mentioned
Author:
rikazzz
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OS Security
What is breach of confidentiality?
This type of violation involves unauthorized reading of data
This violation involves unauthorized modification of data
This violation involves unauthorized destruction of data
This violation involves unauthorized use of resources
Author:
rikazzz
Comment
OS Real Time Operating Systems(RTOS)
Earliest deadline first algorithm assigns priorities according to ____________
periods
deadlines
burst times
none of the mentioned
Author:
rikazzz
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Computer Science Fundamentals
A thread becomes non runnable when?
Its stop method is invoked
Its sleep method is invoked
Its finish method is invoked
Its init method is invoked
A thread becomes Not Runnable when one of these events occurs:
Author:
rikazzz
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OS Deadlocks
A system has 3 processes sharing 4 resources. If each process needs a maximum of 2 units then, deadlock ____________
can never occur
may occur
has to occur
none of the mentioned
Author:
rikazzz
Comment
OS CPU Scheduling
What is Scheduling?
allowing a job to use the processor
making proper use of processor
all of the mentioned
none of the mentioned
Author:
rikazzz
Comment
OS Memory Management
The address loaded into the memory address register of the memory is referred to as ____________
Physical address
Logical address
Neither physical nor logical
None of the mentioned
Author:
rikazzz
Comment
OS Protection
The code segment that misuses its environment is called a _____________
internal thief
trojan horse
code stacker
none of the mentioned
Author:
rikazzz
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