ICT Operating System Fundamentals 2

Question 1

Which scheduling algorithm can lead to starvation of low-priority processes?

Accepted Answer

Priority Scheduling

Answer

Priority Scheduling can starve low-priority processes if higher-priority processes continuously arrive.

Question 2

What is a 'race condition' in operating systems?

Accepted Answer

An outcome that depends on the unpredictable sequence of thread execution

Answer

A race condition occurs when system behavior depends on the relative timing of events such as thread execution order.

Question 3

Which of the following best describes a 'semaphore' in OS context?

Accepted Answer

A synchronization variable used to control access to shared resources

Answer

A semaphore is an integer variable used to solve critical section problems and synchronize concurrent processes.

Question 4

What is the purpose of the Translation Lookaside Buffer (TLB)?

Accepted Answer

To cache recent virtual-to-physical address translations

Answer

The TLB is a hardware cache that speeds up virtual address translation by storing recent page table entries.

Question 5

In a multi-threaded process, what do threads share?

Accepted Answer

Code, data, and OS resources like open files

Answer

Threads within the same process share the code section, data section, and OS resources, but each has its own stack and registers.

ICT - Information Communication Technology Practice Test