Operating systems manages

a$.$ All memories

b$.$ Only main memory

c$.$ Main memory and secondary memory

d$.$ Cache memory and registers

In multiprogramming systems, the CPU executes multiple processes by switching among them, but

the switches occur frequently, providing the user with a fast response time.

a$.$ True

b$.$ False

System daemons are part of the kernel.

a$.$ True

b$.$ False

Balanced binary search tree can provide worst case performance of

a$.O(1)$

b$.O(n)$

c$.O(nlogn)$

d$.O(logn)$

Android implementation uses

a$.$ Kernel in $C$ and Assembly language, system programs in $C$ and $C$# and application

framework in mostly Java.

b$.$ Kernel in C$++$ and Assembly language, system programs in $C$ and $C++$ and application

framework in mostly Java.

c$.$ Kernel in $C$ and Assembly language, system programs in $C$ and Python and application

framework in mostly Java.

d$.$ None of the above.

Please solve all of the five mcq questions with explanations $........$