OS - Assessment

Assessment

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reda mohamed

•

Computers

•

11th Grade - University

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50 questions

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Multiple Choice

30 sec

1 pt

A ____________ is a dispatchable unit of work that executes sequentially and is interruptible so that the processor can turn to another thread

port

token

process

thread

Multiple Choice

20 sec

1 pt

We can characterize the behavior of an individual process by listing the sequence of instructions, referred to as a __________, that executes for that process.

state

trace

process block

priority

Multiple Choice

20 sec

1 pt

The process control block is

process type variable

data structure

A secondry storge section

A block in memory

Multiple Choice

20 sec

1 pt

Resons for process termination

normal completion , memory unavailable

Invalid instruction

data misuse

All of the above

Multiple Choice

20 sec

1 pt

The process was placed in a suspended state by an agent.

process itself

a parent process

All of the above

Multiple Choice

20 sec

1 pt

the entry of all the pcbs of the current processes in the system is in

Memory Table

Process image

Process Table

Process Unit

Multiple Choice

20 sec

1 pt

process spawning

is an automatic procedure of de-allocating the process memory

happens when the OS creats a process at the explicit requist of another process

happens in the user mode

non of the above

Multiple Choice

20 sec

1 pt

the state of a process after it encounters and I/O instruction is

Ready

Blocked/Waiting

Running

Both a and b

Multiple Choice

20 sec

1 pt

The traditional approach of a single thread of execution per process, in which the concept of a thread is not recognized, is known as ____________

task

resource

single-threaded approach

lightweight process

10.

Multiple Choice

20 sec

1 pt

The idea of having a many-to-many relationship between threads and processes has been explored in the experimental operating system _________ .

VISTA

TRIX

SOLARIS

LEOPARD

11.

Multiple Choice

20 sec

1 pt

In a multithreaded environment, a __________ is defined as the unit of resource allocation and a unit of protection.

strand

process

string

trace

12.

Multiple Choice

20 sec

1 pt

The principal disadvantage of the _________ approach is that the transfer of control from one thread to another within the same process requires a mode switch to the kernel.

KLT

LWP

VAX

ULT

13.

Multiple Choice

20 sec

1 pt

_________ is a good example of an OS using a combined ULT/KLT approach.

TRIX

Windows

LINUX

Solaris

14.

Multiple Choice

20 sec

1 pt

A _________ is a single execution path with an execution stack, processor state, and scheduling information.

domain

strand

thread

message

15.

Multiple Choice

20 sec

1 pt

A ________ is a user-created unit of execution within a process.

Kernel

KLT

lightweight process

ULT

16.

Multiple Choice

20 sec

1 pt

A Windows process must contain at least _________ thread(s) to execute.

four

three

two

one

17.

Multiple Choice

20 sec

1 pt

A thread enters the _________ state, after waiting, if it is ready to run but the resources are not available.

Terminated

Standby

Transition

Waiting

18.

Multiple Choice

20 sec

1 pt

The _________ are the fundamental entities that can be scheduled and dispatched to run on one of the system processors.

Processes

ULTs

LWPs

Kernel threads

19.

Multiple Choice

20 sec

1 pt

The __________ state is when the thread has terminated.

ZOMBIE

FREE

STOP

SLEEP

20.

Multiple Choice

20 sec

1 pt

The blocked state in which the process is waiting for an event, such as the end of an I/O operation, the availability of a resource, or a signal from another process is the _________ state.

Times and timers

Uninterruptible

Stopped

Interruptible

21.

Multiple Choice

20 sec

1 pt

The collection of program, data, stack, and attributes is referred to as the _________ .

process structure

process control block

process location

process image

22.

Multiple Choice

20 sec

1 pt

When a process is in the _________ state it is in secondary memory but is available for execution as soon as it is loaded into main memory.

Blocked

Ready/Suspend

Ready

Blocked/Suspend

23.

Multiple Choice

20 sec

1 pt

__________ involves moving part or all of a process from main memory to disk.

Swapping

Relocating

Suspending

Blocking

24.

Multiple Choice

20 sec

1 pt

When one process spawns another, the spawned process is referred to as the __________ .

trap process

child process

stack process

parent process

25.

Multiple Choice

20 sec

1 pt

"The process was placed in a suspended state by an agent; either itself, a parent process, or the OS, for the purpose of preventing its execution," is a characteristic of a _________ process.

blocked

suspended

ready

swapped

26.

Multiple Choice

20 sec

1 pt

Each thread of one process has to maintain a separate program counter, stack, and registers.

true

false

27.

Multiple Choice

20 sec

1 pt

One process is waiting for the input from the user, which state is this process most probably in?

Ready

Running

Waiting

New

28.

Multiple Choice

20 sec

1 pt

A process is a program

true

false

29.

Multiple Choice

20 sec

1 pt

Suspending a process involves suspending all threads of the process since all threads share the same address space

true

false

30.

Multiple Choice

20 sec

1 pt

In a multithreaded environment, the unit of resource ownership and scheduling/execution is thread

true

false

31.

Multiple Choice

20 sec

1 pt

Each thread of one process has to maintain a separate program counter, stack, and registers.

true

false

32.

Multiple Choice

20 sec

1 pt

to activate a suspended process, it should be moved from disk to main memory

true

false

33.

Multiple Choice

20 sec

1 pt

blocked process cannot execute until some event occurs, such as the completion of an I/O operation

true

false

34.

Multiple Choice

20 sec

1 pt

the collection of program code, data, stack, and attributes is referred to as the process control block

true

false

35.

Multiple Choice

20 sec

1 pt

Linux thread model doesn't contain thread state

Running

stopped

sleep

zombie

36.

Multiple Choice

20 sec

1 pt

To activate a suspended process, it should be moved from main memory to secondary memory

true

false

37.

Multiple Choice

20 sec

1 pt

Which one is not advantage of ULT (User Level Thread)

Multithreaded application can take advantage of multiorocessing

Thread switching doesn't require kernel mode privilege

scheduling can be application specific

can run on any Operating System

38.

Multiple Choice

20 sec

1 pt

Windows is an example of a User-level thread approach

true

false

39.

Multiple Choice

20 sec

1 pt

Fixed length block of main memory is called

segment

blocked partition

Frame

page

40.

Multiple Choice

20 sec

1 pt

A fixed-length block of data in secondary memory is called:

segment

blocked partition

Frame

page

41.

Multiple Choice

20 sec

1 pt

A variable-length block of data that resides in secondary memory is called:

segment

blocked partition

Frame

page

42.

Multiple Choice

30 sec

1 pt

A process is a program

True

false

43.

Multiple Choice

30 sec

1 pt

Suspending a process involves suspending all threads of the process since all threads share the same address space.

True

False

44.

Multiple Choice

30 sec

1 pt

In a multithreaded environment, the unit of resource ownership and scheduling/execution is thread.

True

False

45.

Multiple Choice

30 sec

1 pt

If one thread in a process is blocked, this prevents other threads in the process even if that other thread is in a ready state.

True

False

46.

Multiple Choice

30 sec

1 pt

Each thread of one process has to maintain a separate program counter, stack, and registers.

True

False

47.

Multiple Choice

20 sec

1 pt

Which one of the following is the address generated by CPU

physical address

absolute address

logical address

none of the mentioned

48.

Multiple Choice

20 sec

1 pt

In fixed size partition, the degree of multiprogramming is bounded by

the number of partitions

the CPU utilization

the memory size

all of the mentioned

49.

Multiple Choice

20 sec

1 pt

Main memory divided into a number of static partitions at system generation time is _________ .

fixed partitioning

simple paging

dynamic partitioning

virual memory segmentaion

50.

Multiple Choice

20 sec

1 pt

Main memory divided into a number of equal size frames is the __________ technique.

fixed partitioning

simple paging

dynamic partitioning

virual memory segmentaion

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