Lecture 11 Quiz

 What is the primary role of a Kernel Thread?

• To handle interrupts only

• To manage user-level thread creation

• To act as the smallest unit of execution that the operating system can schedule

• To store process instructions in memory

 Which of the following best describes User-Level Threads (ULT)?

• Managed by the operating system

• Require a separate address space

•  Managed by the application itself

• Cannot run concurrently with other threads

What is a Lightweight Process (LWP) responsible for?

• Managing interrupts

• Serving as a bridge between user-level threads and kernel threads

•  Scheduling user-level threads

• Handling memory management

In Solaris, how are interrupts handled?

• As separate processes

• By user-level threads

• By converting interrupts to kernel threads

• Through direct communication with hardware

 Which of the following is NOT a component of an Android application?

• Activities

•  Services

• Content providers

•  Kernel threads

In Linux, what is the relationship between threads and processes?

• They are managed entirely separately

• Linux distinguishes between threads and processes

• Threads are mapped into kernel-level processes

•  Processes cannot contain threads

 Which of the following best describes an Activity in Android?

• A background service

• A component that provides a screen for user interaction

• A content provider

•  A thread management tool

What is the purpose of the Grand Central Dispatch (GCD) in Mac OS X?

• To manage memory allocation

• To prioritize processes in the operating system

• To provide a pool of threads for concurrent execution

• To handle input/output operations

Which structure in Solaris includes an LWP identifier, signal mask, and kernel stack?

• User-level thread

• Kernel thread

• Lightweight Process (LWP)

• Process control block

 In which situation would a Foreground process be killed according to Android’s precedence hierarchy?

•  When the system runs out of memory

•  If it has the lowest precedence

• When it is the only process running

• Foreground processes are never killed