In Android, which component is responsible for managing the lifecycle of activities? MCQ with Answer and Explanation

In Android, which component is responsible for managing the lifecycle of activities?
A. Window Manager
B. Activity Manager
C. Package Manager
D. Content Provider
Answer: Option B
Solution (By JKSSB Mock Tests)
Activity Manager manages the lifecycle of activities (screens) and handles back stack and transitions.

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Practice More Operating Systems Questions

Question #1
What memory allocation issue occurs when there is sufficient total free memory space across the system, but it is split into tiny non-contiguous blocks that cannot accommodate a new request?
A. Virtual Thrashing Loop
B. Page Table Mismatch
C. External Fragmentation
D. Internal Fragmentation

Correct Answer: Option C


Explanation:
External fragmentation leaves memory broken into tiny segments scattered between active processes, preventing continuous allocations for larger tasks.

This question belongs to: Computer Operating Systems
Question #2
Which Linux command is used to change the current directory?
A. pwd
B. cd
C. dir
D. ls

Correct Answer: Option B


Explanation:
cd (change directory) moves the user to a different directory.

This question belongs to: Computer Operating Systems
Question #3
What type of OS is designed to guarantee that critical actions or computing responses occur within precise, predictable time constraints?
A. Time-Sharing Operating System
B. Real-Time Operating System (RTOS)
C. Network Operating System
D. Batch Processing System

Correct Answer: Option B


Explanation:
A Real-Time Operating System (RTOS) is meant for environments where processing must happen within strict, predefined time margins (e.g., embedded systems, robotics).

This question belongs to: Computer Operating Systems