List of top Computer Science & Information Technology Questions on Operating Systems

For which deadlock management strategy, the Ostrich algorithm is used?

Consider a disk queue with requests for I/O to blocks on cylinders as 98, 183, 37, 122, 14, 124, 65, 67 and head starts at 53. What are the total head movements for FCFS and SSTF algorithms?

What is the major problem with priority scheduling algorithm?

A solution to the critical section problem should satisfy three requirements. Choose the correct set from the following: \[ \text{I. Mutual Exclusion} \] \[ \text{II. Progress} \] \[ \text{III. Hold and Wait} \] \[ \text{IV. Circular Wait} \] \[ \text{V. Bounded Waiting} \]

What is the solution for the problem of external fragmentation?

Choose a procedural language from the following

In which one of the following modes, the hardware allows privileged instruction to be executed?

Which among the following is a light weight process?

Choose the correct statements about fork and vfork system calls. Statement-I: vfork is faster than fork. Statement-II: fork is safer than vfork. Statement-III: vfork shares parent's memory, fork copies memory.

Which CPU scheduling algorithm uses time quantum for processes?

Which page replacement algorithm suffers with Belady's anomaly?

Consider the following statements about interrupts.
Statement-I: Internal interrupts are synchronous with the program while external interrupts are asynchronous.
Statement-II: Internal interrupts are called traps. The correct answer is

System calls are usually invoked by using which one of the following means?

Which one of the following is not necessarily saved on a context switch between two processes?

Suppose in a time-shared operating system, a certain process is performing I/O. It must be in which one of the following states?