Filters
Question type

Study Flashcards

In 1991, AT&T's Unix System Laboratories developed System V release 6, which incorporated almost all of the features found in System V release 3.

A) True
B) False

Correct Answer

verifed

verified

UNIX is designed to ensure device dependence to the applications running under it.

A) True
B) False

Correct Answer

verifed

verified

The ____ command allows the programmer to synchronize process execution by suspending the parent until the child is finished.


A) exec
B) fork
C) wait
D) pause

E) A) and D)
F) B) and D)

Correct Answer

verifed

verified

The system command, split, splits a program into two copies, which are both running from the statement after the command.

A) True
B) False

Correct Answer

verifed

verified

The UNIX process scheduling algorithm picks the process that will run in the shortest amount of time to be run first.

A) True
B) False

Correct Answer

verifed

verified

The Processor Manager of a UNIX system kernel handles the allocation of the CPU, process scheduling, and the satisfaction of process requests.

A) True
B) False

Correct Answer

verifed

verified

By 1990, there were about two dozen versions of UNIX, among them AT&T's UNIX System V.

A) True
B) False

Correct Answer

verifed

verified

A pipe is the operating system's way to connect the output from one program to the input of another without the need for temporary or intermediate files.

A) True
B) False

Correct Answer

verifed

verified

UNIX uses a ____ to keep track of which processes are using which program code, and the memory is not released until the program code is no longer needed.


A) pointer
B) text table
C) binary file
D) database

E) C) and D)
F) B) and D)

Correct Answer

verifed

verified

UNIX stores files as sequences of bytes and does not impose any structure on them.

A) True
B) False

Correct Answer

verifed

verified

There is no return from a successful ____ call.


A) nest
B) exec
C) duplicate
D) fork

E) B) and C)
F) C) and D)

Correct Answer

verifed

verified

UNIX uses the ____ page replacement algorithm.


A) least recently used
B) round robin
C) priority
D) oldest first

E) A) and B)
F) A) and C)

Correct Answer

verifed

verified

The portability of UNIX is attributed to the fact that most of it is written in a high-level language, C++.

A) True
B) False

Correct Answer

verifed

verified

In UNIX, a ____ table is allocated to each active process.


A) process
B) subtext
C) user
D) database

E) B) and D)
F) A) and C)

Correct Answer

verifed

verified

When the UNIX Processor Manager is deciding which process from the READY queue will be loaded into memory to be run first, it chooses the process ____.


A) with the lowest priority
B) which has been waiting longest
C) with the lowest amount of time remaining to execute
D) with the longest time spent on the secondary storage

E) None of the above
F) A) and B)

Correct Answer

verifed

verified

UNIX is a true multitasking operating system.

A) True
B) False

Correct Answer

verifed

verified

Each physical device in UNIX is identified by a minor device number, a major device number, and a contact address.

A) True
B) False

Correct Answer

verifed

verified

The following command ____ , will copy the contents of chapt1 and chapt2 into a file named sectiona.


A) chapt1, chapt2 < sectiona
B) cp chapt1 sectiona, cp chapt2 sectiona
C) cat chapt1 chapt2 > sectiona
D) ls chapt1, chapt2, sectiona

E) B) and C)
F) None of the above

Correct Answer

verifed

verified

The following command ____ will store the names of all users logged on to the system in the file called temporary.


A) ls user temporary
B) who > temporary
C) users > temporary
D) view users temporary

E) A) and D)
F) C) and D)

Correct Answer

verifed

verified

Swapping uses a round robin policy.

A) True
B) False

Correct Answer

verifed

verified

Showing 21 - 40 of 50

Related Exams

Show Answer