As per number of users, there are _____ types of operating systems.
1
2
3
4
The OS should provide _____________.
Reliability
Scalability
Data security
None of these
____________ makes efficient use of computing resources.
System software
Application software
Both of these
A set of extended instruction providing an interface between the operating system and the user program is known as _________.
Program execution
System calls
Program call
_____________ means that the operating system should not allow unauthorized person.
Data confidentiality
Help facility
_________ is a program which is running at all times on the computer.
Hardware
Application
Operating system
In __________ the memory is dividing into many partition.
Multitasking
Multiprogramming
Multithreading
Bug means :
Error
Job
Task
Process
___________ algorithm based on queuing.
SJF
FIFO
Round Robin
