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Operating System
1081
Computer Science Fundamentals
998
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Computer Science Fundamentals
A concept that combines data and functions into a single unit called class.
inheritance
encapsulation
polymorphism
abstraction
Encapsulation enables the important concept of data hiding possible. It combines data and functions into a single unit.
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OS File Systems and Their Implementation
In ___________ writes, the data is stored in the cache.
Asynchronous
Regular
Synchronous
Irregular
Author:
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OS Distributed File Systems
How many layers does the Internet model ISO consist of?
Three
Five
Seven
Eight
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OS Real Time Operating Systems(RTOS)
VxWorks is centered around ____________
wind microkernel
linux kernel
unix kernel
none of the mentioned
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OS File Systems and Their Implementation
The index contains ____________
names of all contents of file
pointers to each page
pointers to the various blocks
all of the mentioned
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Computer Science Fundamentals
The invention of _______________ gave birth to the much cheaper micro computers.
Mainframes
Microcomputers
Microprocessors
PDAs
The invention of microprocessor (also called as single chip CPU) gave birth to the much cheaper microcomputers.
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OS Process Synchronization
The wait operation of the semaphore basically works on the basic _______ system call.
stop()
block()
hold()
wait()
Author:
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Comment
OS Protection
What is true about Indirection to revoke capability?
Capabilities point indirectly to the objects
Each capability will not have a unique entry in global
Table entries cannot be reused for other capabilities
This system was adopted in MULTICS system
Author:
rikazzz
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Computer Science Fundamentals
The corresponding min term when x=0, y=0 and z=1.
x.y.z’
X’+Y’+Z
X+Y+Z’
x’.y’.z
The min term is obtained by taking the complement of the zero values and taking the term with value 1 as it is.
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rikazzz
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OS Process Synchronization
Semaphores are mostly used to implement ____________
System calls
IPC mechanisms
System protection
None of the mentioned
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