20. Demand paging is considered as ______________.
(A) fetching a page when not needed (B) switching between two processes (C) fetching a page only when needed (D) switching between two threads
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19. ___________ is a technique to move a process from main memory to secondary memory.
(A) Deadlock (B) Sy…
Topic: JECA MCA 2023
18. Page fault means ______________.
(A) required page is available in main memory (B) required page is no…
Topic: JECA MCA 2023
17. Banker’s algorithm for resource allocation deals with ______________.
(A) mutual exclusion (B) mutual …
Topic: JECA MCA 2023
16. Resource allocation graph is used to represent ______________.
(A) deadlock (B) virtual memory &…
Topic: JECA MCA 2023
15. If only one process can be able to access a particular resource at a time, then it is known as ______________.
(A)…
Topic: JECA MCA 2023
14. _________ is the most appropriate scheduling in case of a time-shared operating system.
(A) FCFS (B) R…
Topic: JECA MCA 2023
13. BIOS means ______________.
(A) basic input/output system (B) best input/output system (C) …
Topic: JECA MCA 2023
12. Auxiliary memory is also known as ______________ memory.
(A) Primary (B) Secondary (C) Bin…
Topic: JECA MCA 2023
11. Address of the next instruction to be executed is specified by ______________.
(A) MBR (B) MAR &…
Topic: JECA MCA 2023
__________ interrupt may happen due to power failure.
Topic: JECA MCA 2023
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21. Thrashing means a condition having ______________.
(A) minimum paging (B) optimized paging  …
Topic: JECA MCA 2023
22. A counting semaphore is initialized to 15. Then, 4 wait operations and 2 signal operations are completed on this se…
Topic: JECA MCA 2023
23. What do you mean by fork()? Choose the correct option.
(A) Starvation (B) Creation of new task &…
Topic: JECA MCA 2023
24. In file management, FAT means ______________.
(A) Feature Access Table (B) File Access Table &nbs…
Topic: JECA MCA 2023
25.What is the output of the following program ? include <iostream> using namespace std; int ad…
Topic: JECA MCA 2023
26.What is the output of the following program ? #include <iostream> using namespace std; templ…
Topic: JECA MCA 2023
26.What is the output of the following program ?#include <iostream>using namespace std;int main() { &n…
Topic: JECA MCA 2023
What is the output of the following program ?#include <iostream>using namespace std;struct demo{ int…
Topic: JECA MCA 2023
29.What is the output of the following program ?#include <iostream>using namespace std;int main (){ …
Topic: JECA MCA 2023
30.What is the output of the following program ?#include <iostream>using namespace std;class Demo {public: …
Topic: JECA MCA 2023
