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4

_________, as a feature of good distributed file system, clients should be able to continue working if a file server crashes. Likewise, data must not be lost and a restarted file server must be able to recover to a valid state.

A. Scalability

B. Reliability

C. Flexibility

D. Fault tolerance

Correct Answer :

D. Fault tolerance


Related Questions

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4

The _____________ are based on modification of the original message in some manner, or on creation of a false message.

A. Passive attack

B. Release of message content attack

C. Traffic analysis attack

D. Active attack

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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

Wiretapping to capture data in a network is an example of ________________

A. interruption

B. interception

C. fabrication

D. modification

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4

One of the wonderful things about UNIX is its ___________names.

A. Unlimited path

B. Unlimited directory

C. Limited path

D. Limited file

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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

In___________, the requesting device or devices assert the signal bus_request.

A. Priority encoded arbitration

B. Distributed arbitration by self-selection

C. Priority arbitration

D. Daisy chain arbitration

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4

The Network Time Protocol is similar to _______________algorithm in that synchronization is also performed using time servers and an attempt is made to correct for communication latencies.

A. Banker's

B. Divide and conquer's

C. Cristians

D. Xdelta's

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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

In MS-DOS, the interfaces and levels of functionality are _______________

A. not well separated.

B. well separated

C. independent

D. dependent

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4

____________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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4

A page fault occurs when

A. the page is not found in the memory

B. the page is found in the memory

C. the Segmentation starts

D. the Deadlock happens

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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

The usual su command syntax is

A. su-pwd

B. su-pd

C. su - userID

D. Sue- ID

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4

In case of ________________the server automatically copies files to other servers after the files are written.

A. Explicit replication

B. Implicit replication

C. Lazy file replication

D. Group file replication

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4

In the case of____________ , changes to an open file are only locally visible.

A. session semantics

B. immutable files

C. atomic transactions

D. None of the above.

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4

In layered approach each layer uses the functions and services of ------------------

A. kernel

B. lower-level layers

C. higher-level layers

D. all of these

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4

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

_______refers to the block size of the DSM system, i.e. to the units of sharing and the unit of data transfer across the network when a network block fault occurs.

A. Granularity

B. Coherence

C. Abstraction

D. Synchronization

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4

Which of the following is suitable after you install new drivers?

A. Hibernate

B. Sleep

C. Restart

D. Shut Down

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4

An operating system version designed for use with a media center PC is Microsoft Windows XP

A. Media center edition

B. Home edition

C. Tablet PC edition

D. None of above

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4

______________ 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

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4

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

The controller can access memory in memory cycles which are not used by the particular bank of memory into which the DMA controller is writing data. This approach, called _________

A. interrupting

B. cycle stealing

C. swapping

D. paging

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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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4

In Multics, a process could have up to 256K segments, but each segment was limited to ___________ 64K words.

A. 64K

B. 32K

C. 1024K

D. 112K

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4

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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4

______________approach simplifies debugging and system verification.

A. Kernel

B. Layered

C. Extended

D. Virtual machine

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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

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

An orphan process is automatically inherited by the _____and becomes a _______ of this process.

A. 'init' process, father

B. 'init' process, child

C. 'initial process, father

D. 'it' process, child