What is the function of the Android 'TelephonyManager'? MCQ with Answer and Explanation

What is the function of the Android 'TelephonyManager'?
A. To manage data connection
B. To make phone calls
C. To send SMS
D. To access device telephony and network information
Answer: Option D
Solution (By JKSSB Mock Tests)
TelephonyManager provides information about cellular network, SIM, device ID, and phone state.

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Practice More Operating Systems Questions

Question #1
What type of operating system kernel includes all device drivers, file system handlers, and process management routines inside a single massive binary space running in privileged mode?
A. Microkernel
B. Monolithic Kernel
C. Asymmetric Kernel
D. Exokernel

Correct Answer: Option B


Explanation:
A monolithic kernel compiles all essential OS services directly into a single, comprehensive space, providing high performance at the expense of modular isolation.

This question belongs to: Computer Operating Systems
Question #2
Which utility in Android handles the composition of various display layers (windows, status bars, applications) onto a single framebuffer for rendering?
A. PackageManager
B. Zygote
C. ActivityManager
D. SurfaceFlinger

Correct Answer: Option D


Explanation:
SurfaceFlinger is the system-wide graphics compositor in Android that accepts surface buffers from multiple sources and combines them for the display.

This question belongs to: Computer Operating Systems
Question #3
Which of the following is a Linux distribution that is known for its stability and long-term support?
A. Arch Linux
B. Gentoo
C. Fedora
D. Ubuntu LTS

Correct Answer: Option D


Explanation:
Ubuntu LTS (Long Term Support) releases are stable with updates for 5 years, widely used in enterprise.

This question belongs to: Computer Operating Systems