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______________ occurs when multiple processes or threads read and write data items so that the final result depends on the order of execution of instructions in the multiple processes.

A. Race condition

B. Mutual exclusion

C. Exception

D. Interrupt

Correct Answer :

A. Race condition


Related Questions

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Find out the characteristics of System-oriented names:

A. They are large integers or bit strings.

B. They are of the same size

C. Generally shorter than human-oriented names and are easy for manipulations like hashing, sorting and so on.

D. All A, B, C

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RPN stands for

A. Reverse Polish Notation

B. Record Police Notation

C. Record Polish Notation

D. Reverse Police Negation

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You can move a window to a different position on your screen by dragging it by its

A. Tail

B. Move handle

C. Status bar

D. Title bar

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A two-byte integer called ____________is interpreted as an index into an array of inodes in a fixed, known location on disk.

A. an inode

B. an inumber

C. an imap

D. an imark

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__ is the program run on a computer when the computer boots up

A. System software

B. Operating system

C. System operations

D. None

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______________approach simplifies debugging and system verification.

A. Kernel

B. Layered

C. Extended

D. Virtual machine

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In case of modification an unauthorized party not only gains access to but tampers with an asset. This is an attack on ____________________.

A. availability

B. confidentiality

C. integrity

D. authenticity

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4

Identify the server:
This type of server generally remains in existence indefinitely. It is shared by many clients. Servers of this type are created and installed before the clients use them.

A. Instance-per-call-servers

B. Persistent Servers

C. Non-Persistent Servers

D. Semantic server

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______________is responsible for allocating primary memory to processes and for assisting the programmer in loading and storing the contents of the primary memory.

A. Operating system

B. Memory manager

C. Database administrator

D. RAM

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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

In Windows, start button is used to

A. Device setting

B. Run applications

C. All of above

D. Turn off the system

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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

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

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

A. semget()

B. semsget()

C. mknod()

D. sempget()

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A process is ____________________

A. A program in Execution.

B. An asynchronous activity.

C. The 'dispatchable' unit.

D. All A, B, C

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4

Two clocks are said to be synchronized at a particular instance of time if the difference in time values of the two clocks is less than some specified constant. The difference in time values of two clocks is called ___________.

A. Interrupt

B. Clock Frequency

C. Clock Ticks

D. Clock Skew

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4

In the case of____________, message remains in the senders address space until the receiver executes the corresponding receive.

A. No buffering

B. Single message buffering

C. Unbounded-capacity buffer

D. Finite bound buffer

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In case of ____________________transparency a file can transparently move to another server.

A. Location

B. Migration

C. Replication

D. Concurrency

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When copying more than one file at a time, you must specify an existing directory as the ___________

A. Source

B. Sub directory

C. Destination.

D. Path name

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A _______________in a distributed system is a string of bits or characters that is used to refer to an entity.

A. name

B. attribute

C. identifiers

D. addresses

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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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____ runs on a computer hardware and serves as a platform for other system to run on

A. System software

B. Operating system

C. Application system

D. All of above

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____________approach can place the data directly into the memory or take the data directly from the memory without direct intervention from the processor.

A. DMA

B. Daisy chain arbitration

C. polling

D. none of these

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______________ is a situation in which two computer programs sharing the same resource are effectively preventing each other from accessing the resource, resulting in both programs ceasing to function.

A. Semaphore

B. Deadlock

C. Mutual Exclusion

D. No preemption

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4

Which components appear in the initial Windows start up display?

A. Start menu

B. Dialog boxes

C. Taskbar

D. All of above

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The _________takes any characters from standard input, and then echoes them to standard output.

A. kill character

B. cat command

C. cate command

D. control command

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4

A small part of taskbar that has icons of background running applications is

A. Start button

B. Quick launch

C. Task bar

D. System tray

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A sequence of instructions telling the computer what to do is called a_____________

A. program

B. language

C. translator

D. package

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Which of the following is an essential file of a MS-DOS boot disk?

A. COMMANCOM

B. START.COM

C. VER.COM

D. TREE.COM

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Fsck conducts a check in _____ phases

A. One

B. Two

C. Five

D. Eight