System Programming MCQs with Answers
Practice important System Programming MCQs with answers and explanations.
Chapter: 132
Q2821:
A solution that gives each thread its own variable avoids the need for ________.
A. Memory
B. Locks
C. Global flags
D. Compilation
Correct Answer:
C
Chapter: 132
Q2822:
In the global flag solution, what can cause synchronization to fail?
A. Memory leak
B. Deadlock
C. Thread preemption
D. Stack overflow
Correct Answer:
C
Chapter: 132
Q2823:
A thread should set flag to TRUE ________ modifying a shared variable.
A. While
B. After
C. Before
D. Instead of
Correct Answer:
C
Chapter: 132
Q2824:
A critical section is a part of code that accesses ________ data.
A. Unused
B. Shared
C. Read-only
D. Public
Correct Answer:
B
Chapter: 132
Q2825:
If FLAG is not properly managed, threads may enter ________ at the same time.
A. Sleep mode
B. Debug mode
C. Critical region
D. Compilation
Correct Answer:
C
Chapter: 132
Q2826:
Threads entering a critical section together can cause ________.
A. Increased performance
B. Accurate results
C. Data corruption
D. Faster execution
Correct Answer:
C
Chapter: 132
Q2827:
Which of the following is not an ideal solution to the critical section problem?
A. Global flag
B. Mutual exclusion
C. Locks
D. Preemption
Correct Answer:
D
Chapter: 133
Q2828:
What does the volatile qualifier in C ensure about variable access?
A. It is accessed from register
B. It is never accessed
C. It is always accessed from memory
D. It is only read once
Correct Answer:
C
Chapter: 133
Q2829:
Volatile qualifier should be used only when ________.
A. Speed is essential
B. Variable is read once
C. Necessary to avoid optimization issues
D. Code is not shared
Correct Answer:
C
Chapter: 133
Q2830:
A volatile variable is always stored in ________ after an operation.
A. CPU
B. Stack
C. Memory
D. Cache
Correct Answer:
C
Chapter: 133
Q2831:
The use of volatile helps avoid issues caused by ________.
A. File corruption
B. Compiler optimization
C. RAM overflow
D. Code duplication
Correct Answer:
B
Chapter: 133
Q2832:
Latent defects can remain even after ________ is handled.
A. Compilation
B. Threading
C. Synchronization
D. Initialization
Correct Answer:
C
Chapter: 133
Q2833:
What might cause a thread to access an incorrect value due to optimization?
A. Garbage collection
B. Variable caching in registers
C. File reading
D. Stack overflow
Correct Answer:
B
Chapter: 133
Q2834:
Which C qualifier ensures that a variable is not cached in registers?
A. register
B. static
C. const
D. volatile
Correct Answer:
D
Chapter: 133
Q2835:
Compiler optimization can cause issues by keeping values in ________.
A. RAM
B. Disk
C. Registers
D. Cache
Correct Answer:
C
Chapter: 133
Q2836:
Which type of conflict does volatile storage aim to reduce?
A. Semantic conflicts
B. Deadlock
C. Switching conflicts
D. Syntax errors
Correct Answer:
C
Chapter: 133
Q2837:
Volatile variables are ideal for variables accessed by ________.
A. Main method only
B. Background tasks only
C. Multiple threads
D. Recursive functions
Correct Answer:
C
Chapter: 133
Q2838:
Using volatile unnecessarily may result in ________.
A. Crashes
B. Memory leaks
C. Performance degradation
D. Compilation errors
Correct Answer:
C
Chapter: 133
Q2839:
Volatile ensures that variable access is always done from ________.
A. Cache
B. Swap memory
C. Network
D. Main memory
Correct Answer:
D
Chapter: 133
Q2840:
Optimization often keeps intermediate results in ________.
A. Files
B. Registers
C. Static blocks
D. Stacks
Correct Answer:
B