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Operating System
1081
Computer Science Fundamentals
998
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Computer Science Fundamentals
A __________ gate gives the output as 1 only if all the inputs signals are 1.
AND
OR
EXOR
NOR
The AND gate gives a 1 only if all the input signals are 1.
Author:
rikazzz
Comment
Computer Science Fundamentals
A type of non-monotonic reasoning.
Ordinary
Special
Duplicate
Default
Default reasoning is a type of non-monotonic reasoning. Default logic is a non-monotonic logic proposed by Raymond Reiter to formalize reasoning with default assumptions.
Author:
rikazzz
Comment
Computer Science Fundamentals
WDM stands for?
Wave division multiplexing
Wavelength division multiplexing
Wavelength dependent multiplexing
Wave dependent multiplexing
It stands for Wavelength division multiplexing. It has same general architecture as FDM. FDM is frequency division multiplexing.
Author:
rikazzz
Comment
OS Memory Management
A memory buffer used to accommodate a speed differential is called ____________
stack pointer
cache
accumulator
disk buffer
Author:
rikazzz
Comment
OS File Systems and Their Implementation
The three major methods of allocating disk space that are in wide use are _____________
contiguous
linked
indexed
all of the mentioned
Author:
rikazzz
Comment
OS Deadlocks
Every time a request for allocation cannot be granted immediately, the detection algorithm is invoked. This will help identify ____________
the set of processes that have been deadlocked
the set of processes in the deadlock queue
the specific process that caused the deadlock
all of the mentioned
Author:
rikazzz
Comment
Computer Science Fundamentals
A ____________ disk consists of a circular disk, which is coated with a thin metal or some other material that is highly reflective.
magnetic
optical
compact
hard
Optical disks are highly reflective. They can be used to store extremely large amounts of data in a limited space.
Author:
rikazzz
Comment
OS Distributed File Systems
What are the advantages of file replication?
Improves availability & performance
Decreases performance
They are consistent
Improves speed
Author:
rikazzz
Comment
Computer Science Fundamentals
Which is of the following is true about STA instruction?
It uses immediate addressing mode
It is a 3-byte instruction
It required three machine cycles
Accumulator is loaded with the content of memory
STA is a direct addressing mode instruction which stands for Store Accumulator Direct. It is a 3-byte instruction and it requires four machine cycles. In STA instruction memory is loaded with the content of the accumulator.
Author:
rikazzz
Comment
Computer Science Fundamentals
The 10’s complement of 455 is _________
543
544
545
546
To obtain the 10’s complement, we first obtain the 9’s complement and then add 1 to it.
Author:
rikazzz
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