UGC-NET/GATE Multiple Choice Questions for Operating System.
Condition codes are bits typically set by the
With..... a requested page and several subsequent pages are read and cached.
Which of the following is characteristic of an operating system?
All the above
MD5 produces..... bits hash data.
In a paged memory, the page hit ratio is 0.35. The required to access a page in secondary memory is equal to 100 ns. The time required to access a page in primary memory is 10 ns. The average time required to access a page is:
Most widely used graphical user interface operating system for personal computers is
The process to be aborted is chosen on the basis of the following factors:
priority of the process
process is interactive or batch
how long the process has computed
all of the mentioned
Random access in magnetic tapes is.......... compared to magnetic disks.
Operating system is
A collection of hardware components
A collection of input output devices
A collection of software routines
All of above
How many class A, B and C network IDs can exist?
2, 113, 658
Suppose the time to service a page fault is on the average 10 milliseconds, while a memory access takes 1 microsecond. Then a 99.99% hit ratio results in average memory access time of
Which java feature is used to invoke a method on a remote object?
Process Control Block (PCB)
Remote Method Invocation (RMI)
Remote acess control Block
both A and B
System call routines of the operating system are mostly written in
both A and B
GNOME is based on
OLE DB toolkit
Which internal DOS command clears the screen and places the DOS prompt in the upper left corner of the screen?
A locking protocol is one that:
governs how locks are acquired
governs how locks are released
governs how locks are acquired and released
none of the mentioned
There are 16 questions to complete.