Chapter 6 - Synchronization Tools

Each process has _____________ segment of code

• Critical Section

• Entry Section

• Exit Section

• Remainder Section

It allows preemption of process when running in kernel mode

• Non-preemptive

• Preemptive

• Preemptive and Non-preemptive

• None of the above

It runs until exits kernel mode, blocks or voluntarily yields CPU

• Preemptive and Non-preemptive

• Preemptive

• Non-preemptive

• None of the above

Essentially free of race conditions in kernel mode

• Non-preemptive

• Preemptive

• Preemptive and Non-preemptive

• None of the above

Concurrent access to shared data may result in data inconsistency

• True

• False

What is the design protocol to solve critical section

• Entry Section

• Exit Section

• Remainder Section

• Critical Section Problem

The memory that guarantees a computer architecture to make application programs

• Memory barrier

• Memory architecture

• Memory model

• None of the choices

An instruction that forces any change in memory to be propagated (made visible) to all other processors.

• Memory Barrier

• Memory Model

• Memory Architecture

• None of the choices

Memory models may be either: (Choose two)

• Strongly ordered

• Correctly ordered

• Weakly ordered

Choose the two special hardware instructions

• Compare-and-swap instruction

• Set-and-Test instruction

• Test-and-Set instruction

• Correlate-and-Swap instruction