Welcome to Operating System Quiz, Randomly Selected !!

Question 1. Consider a machine with 64 MB physical memory and a 32-bit virtual address space. If the page size is 4KB, what is the approximate size of the page table?

16 MB

8 MB

2 MB

24 MB

Question 2. Where does the swap space reside ?

RAM

Disk

ROM

On-chip cache

Question 3. FIFO scheduling is

Preemptive Scheduling

Non Preemptive Scheduling

Deadline Scheduling

Fair share scheduling

Question 4. ______ is a high level abstraction over Semaphore

Shared memory

Message passing

Monitor

Mutual exclusion

Question 5. An optimal scheduling algorithm in terms of minimizing the average waiting time of a given set of processes is

FCFS scheduling algorithm

Round robin scheduling algorithm

Shorest job - first scheduling algorithm

None of the above

Question 6. _________ is a high speed cache used to hold recently referenced page table entries a part of paged virtual memory

Translation Lookaside buffer

Inverse page table

Segmented page table

all of the above

Question 7. Which technique was introduced because a single job could not keep both the CPU and the I/O devices busy

Time-sharing

SPOOLing

Preemptive scheduling

Multiprogramming

Question 8. In UNIX based systems,To build a modularized kernel, the kernel-headers and kernel-source packages must first be installed. Where will you find the kernel-headers and kernel-source

/usr/local

/usr/src/linux

/usr/sre/redhat

/usr/bin

Question 9. Which symbol will be used with grep command to match the pattern pat at the beginning of a line

^pat

$pat

pat$

pat^

Question 10. Which of the following file name extension suggests that the file is Backup copy of another file

TXT

COM

BAS

BAK