What is the output of the following program ?#include <iostream>using namespace std;struct demo{ int var;};int main(){ demo str; demo *ptr;
str.var = 100; ptr = &str; cout << ptr->var; return 0;}
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26.What is the output of the following program ?#include <iostream>using namespace std;int main() { &n…
Topic: JECA MCA 2023
26.What is the output of the following program ? #include <iostream> using namespace std; templ…
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25.What is the output of the following program ? include <iostream> using namespace std; int ad…
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24. In file management, FAT means ______________.
(A) Feature Access Table (B) File Access Table &nbs…
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
22. A counting semaphore is initialized to 15. Then, 4 wait operations and 2 signal operations are completed on this se…
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21. Thrashing means a condition having ______________.
(A) minimum paging (B) optimized paging  …
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20. Demand paging is considered as ______________.
(A) fetching a page when not needed (B) switching betwe…
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19. ___________ is a technique to move a process from main memory to secondary memory.
(A) Deadlock (B) Sy…
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18. Page fault means ______________.
(A) required page is available in main memory (B) required page is no…
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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
31.What is the output of the following program ?#include <iostream>using namespace std;void print();int main(){&n…
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32.What is the output of the following program ?#include <iostream>using namespace std;int main(){ i…
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33.In shell script, which command is used to create a new directory ?
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34.In shell script, which command is used to copy a file?
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35.In shell script, which command is used to delete a file?
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36.In Unix/Linux platform, which command is used to find out the difference between two files?
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37.In Unix/Linux platform, which command is used to create a symbolic link?
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38.In Unix/Linux platform, which command is used to view the inode number of a file?
Topic: JECA MCA 2023
