UGC-NET/GATE Multiple Choice Questions for Operating System.
Which of the following is NOT a valid deadlock prevention scheme?
Release all resources before requesting a new resource
Number the resources uniquely and never request a lower numbered resource than the last one requested
Never request a resource after releasing any resource
Request and all required resources be allocated before execution
An embedded object might appear in a document as
None of above
Which is not an external command?
None of the above
Which of following need a device driver?
An operating system is known to be a layer of
What is not a major reason for building distributed systems?
The.......... is the drive containing the files to be copied
None of the above
A uni-processor computer system only has two processes, both of which alternate 10ms CPU bursts with 90ms I/O bursts. Both the processes were created at nearly the same time. The I/O of both processes can proceed in parallel. Which of the following scheduling strategies will result in the least CPU utilization (over a long period of time) for this system?
First come first served scheduling
Shortest remaining time first scheduling
Static priority scheduling with different priorities for the two processes
Round robin scheduling with a time quantum of 5 ms
You are adding a new server to your network. The network uses TCP/IP. The new server will provide users with dial-up access to network resources. The data link communications protocol you choose for dial-up access must allow you to provide secure authentication. Which protocol should you choose?
Both A and B
Neither a nor b
In UNI, X even an 'empty' disk has a percentage of its space lost to..........
A small graphic which represents a computer program, drive, folder or document is known as
For sharable resources, mutual exclusion:
is not required
depends on the operating system
none of the mentioned
A single user operating system for IBM compatible personal computers were named as
MS Windows NT
Command which is used to clear the screen and display the operating system prompt on the first line of display is
works best with many small partitions
allows many programs to use memory simultaneously
allows each program in turn to use the memory
does not work with overlaying
Scheduling of threads are done by
There are 16 questions to complete.