AMU MCA Operating System Previous Year Questions (PYQs) – Page 1 of 3
A Place for Latest Exam wise Questions, Videos, Previous Year Papers,
Study Stuff for MCA Examinations
Study Stuff for MCA Examinations
Showing 22 questions
System CPU time is defined as:
1
2
3
4
Solution
System CPU time = kernel execution time.
Which of the following system call is used to create new process in UNIX operating system?
1
2
3
4
Solution
New process is created using fork().
The Banker's theorem is associated with which of the following concept?
1
2
3
4
Solution
Banker’s Algorithm is used for deadlock avoidance in operating systems.
Which access method is used to obtain a record from a cassette tape?
1
2
3
4
Solution
Cassette tape uses sequential access method.
The directory can be viewed as ………… that translate filenames into their directory entries
1
2
3
4
Solution
A directory maps file names to metadata entries, just like a symbol table.
A semaphore is a shared integer variable
1
2
3
4
Solution
Semaphore value is never allowed to become negative.
Match the following for Unix system calls:
| List–I | List-II |
| 1. exec | (i) Creates a new process |
| 2.brk | (ii) Invokes another program overlaying memory space with a copy of an executable file |
| 3. wait | (iii) To increase or decrease the size of data region |
| 4. fork | (iv) A process synchronizes with termination of child process |
1
2
3
4
Solution
exec → overlays program ⇒ (ii)
brk → changes data size ⇒ (iii)
wait → waits for child ⇒ (iv)
fork → creates process ⇒ (i)
What is a critical section?
1
2
3
4
Solution
Critical section is the part of program where shared resources are accessed.
Data Mining can be used as a ………… tool.
1
2
3
4
Solution
Data mining is mainly used as a research and analysis tool to discover patterns.
Every process consists of two steps CPU and I/O bursts. An I/O bound program will lead to:
1
2
3
4
Solution
I/O bound programs spend more time in I/O, leading to low CPU utilization.
AMU MCA
Online Test Series, Information About Examination,
Syllabus, Notification
and More.
View More
AMU MCA
Online Test Series, Information About Examination,
Syllabus, Notification
and More.
View More
Ask Your Question or Put Your Review.
