Question Discussion & Solution

MCQ

A file being read or written sequentially should not have its pages replaced in LRU order, because _____________

it is very costly

the most recently used page will be used last

it is not efficient

all of the mentioned

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What is the Delay?

the time from when a request is first submitted to when the desired result is produced

the delay that occurs during playback of the stream

how the errors are handled during the transmission and processing of continuous media

none of the mentioned

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In SCSI disks used in high end PCs, the controller maintains a list of _________ on the disk. The disk is initialized during ________ formatting which sets aside spare sectors not visible to the operating system.

destroyed blocks, high level formatting

bad blocks, partitioning

bad blocks, low level formatting

destroyed blocks, partitioning

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The data structure for a sector typically contains ____________

header

data area

trailer

all of the mentioned

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Domain name system provides _____________

host-to-network-address translations for the entire internet

network-address-to-host-name translations for the entire internet

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all of the mentioned

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What is the disk bandwidth?

the total number of bytes transferred

total time between the first request for service and the completion on the last transfer

the total number of bytes transferred divided by the total time between the first request for service and the completion on the last transfer

none of the mentioned

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Introduction to Operating System

Types

Services

Structures

Processes

Threads

CPU Scheduling

Process Synchronization

Memory Management

Storage Management

Input Output Systems

Networking

Distributed Operating System

Protection and Security

Unix

Linux

MS Windows

Mixed

Operating Systems Overview

Process Management

Finding and Processing Files

File Management

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