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Operating System
1081
Computer Science Fundamentals
998
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OS The Linux System
If the memory access time is denoted by ‘ma’ and ‘p’ is the probability of a page fault (0 <= p <= 1). Then the effective access time for a demand paged memory is ____________
p x ma + (1-p) x page fault time
ma + page fault time
(1-p) x ma + p x page fault time
none of the mentioned
Author:
rikazzz
Comment
Computer Science Fundamentals
Secondary storage virtually has an unlimited capacity because the cost per bit is very low.
True
False
The statement is true as secondary storage devices can store large amounts of data temporarily. It is used to overcome the limitations of primary storage.
Author:
rikazzz
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OS File Systems and Their Implementation
What will happen in the two level directory structure?
each user has his/her own user file directory
the system doesn’t its own master file directory
all of the mentioned
none of the mentioned
Author:
rikazzz
Comment
Computer Science Fundamentals
A basic unit of object-oriented programming.
module
block
object
token
In OOP, the basic unit is an object. Objects are identified by its unique name.
Author:
rikazzz
Comment
OS Distributed File Systems
What are the three popular semantic modes?
Unix, Coherent & Session semantics
Unix, Transaction & Session semantics
Coherent, Transaction & Session semantics
Session, Coherent semantics
Author:
rikazzz
Comment
Computer Science Fundamentals
The range of access times of optical disks is generally ______
100 to 300 milliseconds
10 to 30 milliseconds
200 to 400 milliseconds
20 to 40 milliseconds
The access times of optical disks are typically in the range of 100 to 300 milliseconds and that of hard disks are in the range of 10 to 30 milliseconds.
Author:
rikazzz
Comment
OS CPU Scheduling
In multilevel feedback scheduling algorithm ____________
a process can move to a different classified ready queue
classification of ready queue is permanent
processes are not classified into groups
none of the mentioned
Author:
rikazzz
Comment
OS Mass-Storage Structures
An unrecoverable error is known as _________
hard error
tough error
soft error
none of the mentioned
Author:
rikazzz
Comment
OS Memory Management
What is Dynamic loading?
loading multiple routines dynamically
loading a routine only when it is called
loading multiple routines randomly
none of the mentioned
Author:
rikazzz
Comment
Computer Science Fundamentals
The ‘heart’ of the processor which performs many different operations _____________
Arithmetic and logic unit
Motherboard
Control Unit
Memory
The Arithmetic and logic unit performs all the basic operations of the computer system. It performs all the arithmetic(+,-,*,/,etc) as well as the logical operations( AND, OR, NOT, etc.).
Author:
rikazzz
Comment
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