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4

_______________occurs when two or more execution flows are able to run simultaneously.

A. Deadlock

B. Concurrency

C. race condition

D. interrupt

Correct Answer :

B. Concurrency


Related Questions

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4

A _____________is a collection of processors that do not share memory, peripheral devices,or a clock.

A. Computer system

B. distributed system

C. network

D. None of the above

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4

Choose the correct statement from the following.

A. In computer terminology, variables are symbols which stand for some value.

B. An alternative method for executing the commands in the file backup is to make the file as directory.

C. The restricted shell gives more control to the system administrator and restricts the options of the user.

D. The decision making done by computer programs is in the form of conditional execution.

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4

______________is a mechanism the prevents two or more processes from accessing a shared resource simultaneously.

A. Livelock

B. Preemption

C. Semaphore

D. either or

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4

Creation of a semaphore set is done using the _______system call.

A. semget()

B. semsget()

C. mknod()

D. sempget()

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4

A standard UNIX system includes a set of ___________ and a set of ___________.

A. Commands ,files

B. Libraries, Applications

C. Libraries, files

D. Files, Applications

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4

SRM stands for

A. Security Resource Manager

B. Secret Resource Manager

C. Security Reference Monitor

D. Security Reference Manual

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4

Transparent RPC mechanism refers to :

A. Existance of multuple computer visible and a provide a single system image to its users.

B. It runs the program transparently.

C. It is a technique to shift the program to other computer.

D. It is technique in which local procedures and remote procedures are indistinguishable to programmers.

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4

To install the new font

A. Start -> setting -> font

B. Start -> control panel -> font -> install new font

C. Start -> setting -> control panel -> font -> install new font

D. Start -> setting -> control panel -> font

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4

The primary purpose of an operating system is:

A. To allow people to use the computer,

B. To make the most efficient use of the computer hardware

C. To make computers easier to use

D. To keep systems programmers employed

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4

___________variable is not automatically created on all UNIX systems but is used by so many programs that it is considered a standard environment variable.

A. IFS

B. MAIL

C. TERM

D. PATH

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4

Identify the distributed computing model from the following statement. In this model, the user's processes need not be migrated to the server machines for getting the work done by those machines.

A. Minicomputer model

B. Workstation model

C. Workstation-Server model

D. Processor pool model

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4

You can use print manage window

A. To cancel the print job

B. To check status of files in the print queue

C. To interrupt printing

D. All of the above

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4

Process migration involves__________________

A. Selection of a process to be migrated

B. Selection of destination system or node

C. Actual transfer of the selected process to the destination system or node

D. All A, B, C

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4

Which one is true for unconditional disk formatting?

A. Transfer system files after format

B. Do not check/scan surface after format

C. Destroys every byte of data on a disk by overwriting it with with blank spaces

D. All of above

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4

_______________refers to a strategy where whenever a resource is requested, it is only granted if it cannot result in deadlock.

A. Deadlock Prevention

B. Livelock

C. Deadlock avoidance

D. none of these

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4

In_________________ model, when a process does a release access, the contents of all the modifications are not immediately sent to other nodes but they are sent only on demand.

A. Release Consistency Model

B. Lazy Release consistency model

C. Weak Consistency Model

D. Processor Consistency Model

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4

Load balancing algorithms in ______________ class use the processor and process characteristics to allocate processes to nodes.

A. Static

B. Dynamic

C. Deterministic

D. Probabilistic

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4

Which command is used to display the contents of the text file of DOS?

A. Copy

B. Copy con

C. Dir

D. Type

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4

A process may create a new process by executing ___________system call.

A. init

B. fork

C. create

D. new

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4

Having data belonging to two independent processes in the same page is called____________.

A. Buffering

B. Blocking

C. Message-passing

D. False sharing

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4

A bar that inform you the available options in your computer, opened applications, background running applications and can be used to switch between applications quickly is

A. Menu bar

B. Tool bar

C. Status bar

D. Task bar

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4

A SCSI device can transfer up to----------- of information per second.

A. 40 Mbytes

B. 60 Mbytes

C. 40 Gbytes

D. 60 Gbytes

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4

Fsck conducts a check in _____ phases

A. One

B. Two

C. Five

D. Eight

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4

A shared memory segment first needs to be allocated (create, using the__________ system call.

A. semget()

B. msgrcv()

C. shmget()

D. mknod()

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4

An unauthorized party inserts counterfeit objects into the system is called_________________

A. interruption

B. interception

C. fabrication

D. modification

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4

Recently deleted files are stored in

A. Taskbar

B. Desktop

C. My computer

D. Recycle bin

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4

The command used to create logical drive for specific location of disk

A. Format

B. Fdisk

C. Subst

D. All of the above

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4

Which components appear in the initial windows start up display?

A. Dialog box

B. Task bar

C. Start menu

D. All of the above

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4

What is the function of radio button?

A. To select multiple option

B. To select single option

C. To select all option

D. All of above

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4

When you start up the computer the boot up storage at which the BIOS versions manufacturer and data are displayed on the monitor is called

A. Bootstrap

B. System configuration

C. Power on self test (POST)

D. Kernel loading