AMCAT Operating Systems Fundamentals 3

Question 1

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

Accepted Answer

To cache recently used virtual-to-physical address translations for faster page table lookups

Answer

To store recently accessed data from the hard disk

Answer

To buffer network packets before processing

Answer

To translate programming languages to machine code

Question 2

In the context of inter-process communication (IPC), what is a race condition?

Accepted Answer

When the outcome of a program depends on the unpredictable timing of multiple processes accessing shared data

Answer

When two processes compete for CPU time

Answer

When a process runs faster than expected

Answer

When the scheduler assigns priority based on process speed

Question 3

Which disk scheduling algorithm processes requests in the order of the shortest seek time from the current head position?

Accepted Answer

SSTF (Shortest Seek Time First)

Answer

FCFS (First Come First Served)

Answer

SCAN (Elevator algorithm)

Answer

C-LOOK

Question 4

What is the key difference between a monolithic kernel and a microkernel?

Accepted Answer

A microkernel runs most OS services in user space, while a monolithic kernel runs them all in kernel space

Answer

A monolithic kernel is smaller in size than a microkernel

Answer

A monolithic kernel supports only one process at a time

Answer

A microkernel does not support device drivers

Question 5

In the producer-consumer problem, what is the role of the buffer?

Accepted Answer

It acts as a shared storage area where the producer places items and the consumer retrieves them

Answer

It stores the program's source code

Answer

It encrypts data during transfer between processes

Answer

It schedules the order of producer and consumer execution

Question 6

What happens during a context switch in an operating system?

Accepted Answer

The state of the currently running process is saved and the state of the next scheduled process is loaded

Answer

The CPU is restarted

Answer

All processes are terminated and restarted

Answer

The operating system is upgraded to a new version