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4

Because the I/O devices are not synchronized with the CPU, some information must be exchanged between the CPU and the device to ensure that the data is received reliably. This interaction between the CPU and an I/O device is usually referred to as ____________

A. polling

B. arbitration

C. handshaking

D. interrupting

Correct Answer :

C. handshaking


Related Questions

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4

The early ARPAnet is an example of a distributed computing system based on the ________________.

A. Minicomputer model

B. Workstation model

C. Hybrid model

D. Processor pool model

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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

The find command is different from most UNIX commands in that each of the argument expressions following the beginning path name is considered a _____________

A. action expression

B. Boolean expression.

C. Boolean constant

D. Search qualifiers

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4

The Bankers algorithm is used

A. to prevent deadlock

B. to rectify deadlock

C. to detect deadlock

D. to slove deadlock

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4

In case of good process migration mechanism, _____________ means failure of any node other than the one on which the process is running should not affect the execution of the process.

A. Robustness

B. Efficiency

C. Transparent

D. Interference

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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 a peripheral device needs immediate attention from the operating system, it generates a(n)

A. Page file

B. Spool

C. Stack

D. Interrupt

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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

Initialization of I/O devices is part of the_________.

A. CPU

B. MSDOS

C. UNIX kernel

D. None of the above

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4

Once text has been cut to the clipboard, you can____hat text into another document

A. Copy

B. Paste

C. Transfer

D. None of the above

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4

_____________ manage the name spaces and binds an object to its location.

A. Name Server

B. Name agent

C. Context

D. Name resolution

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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

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

______________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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4

The algorithm should be scalable i.e. _____________.

A. The system should not enter a state in which nodes spend all their time migrating processes or exchanging control messages without doing any useful work.

B. The system should be able to handle small and large networked systems.

C. The algorithm should not be affected by the crash of one or more nodes in the system.

D. The process assignment decisions should be based on the current load of the system and not on some fixed static policy.

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4

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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4

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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4

The problem with logical dumping is ________________

A. very costly

B. very slow

C. human errors

D. all of these

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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

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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

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

Which one of the following statements is true?

A. The cat command cares which file it receives as input or where the input goes.

B. Relative pathnames begin with something other than the slash character

C. UNIX shells never remember their current working directory (CW.

D. The cat command interprets -X as an option character rather than a pathname.

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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

A process control block contains varies attributes required by _____________ to control a process.

A. RAM

B. virtual memory

C. BIOS

D. Operating System

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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

Because the I/O devices are not synchronized with the CPU, some information must be exchanged between the CPU and the device to ensure that the data is received reliably. This interaction between the CPU and an I/O device is usually referred to as ____________

A. polling

B. arbitration

C. handshaking

D. interrupting

What is the correct answer?

4

Which of the following is/are external commands?

A. Edit

B. Label

C. Sys

D. All of above

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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

Bootstrapping is also known as ______

A. cold-hot boot

B. hot boot

C. hot strap

D. cold boot

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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