Operating Systems for Programmers - Module 2 - Pre-Quiz

Question 1

How many philosophers may eat simultaneously in the Dining Philosophers problem with 5 philosophers?

Accepted Answer

2

Answer

1

Answer

3

Answer

5

Question 2

Which of the following is true of cooperative scheduling?

Accepted Answer

A process keeps the CPU until it releases the CPU, either by terminating, or by switching to the waiting state

Answer

It requires a timer.

Answer

It incurs a cost associated with access to shared data.

Answer

A process switches from the running state to the ready state when an interrupt occurs.

Question 3

What is the numeric priority of a Windows thread in the HIGH_PRIORITY_CLASS with ABOVE_NORMAL relative priority?

Accepted Answer

14

Answer

24

Answer

10

Answer

8

Question 4

The _____________ refers to the number of processes in memory.

Accepted Answer

degree of multiprogramming

Answer

process count

Answer

long-term scheduler

Answer

CPU scheduler

Question 5

Windows uses the ____.

Accepted Answer

one-to-one model

Answer

many-to-one model

Answer

one-to many-model

Answer

many-to-many model

Question 6

In a(n) ____ temporary queue, the sender must always block until the recipient receives the message.

Accepted Answer

zero capacity

Answer

variable capacity

Answer

bounded capacity

Answer

unbounded capacity

Question 7

A(n) _______ refers to where a process is accessing/updating shared data.

Accepted Answer

critical section

Answer

entry section

Answer

mutex

Answer

test-and-set

Question 8

Which of the following scheduling algorithms must be non-preemptive?

Accepted Answer

FCFS

Answer

SJF

Answer

RR

Answer

priority algorithms

Question 9

The _____ model maps many user-level threads to one kernel thread.

Accepted Answer

many-to-one

Answer

many-to-many

Answer

two-level

Answer

one-to-one

Question 10

A process may transition to the Ready state by which of the following actions?

Accepted Answer

All of the above

Answer

Completion of an I/O event

Answer

Awaiting its turn on the CPU

Answer

Newly-admitted process

Operating Systems for Programmers - Module 2 - Pre-Quiz

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