Operating System Mcqs

Page No. 81

For any type of access, contiguous allocation requires ______ access to get a disk block.


aonly one

✓


bat least two

✖


cexactly two

✖


dnone of the mentioned

✖


View Answer only one

The pointer overhead of indexed allocation is generally _________ the pointer overhead of linked allocation.


aless than

✖


bequal to

✖


cgreater than

✓


dkeeps varying with

✖


View Answer greater than

Indexed allocation _________ direct access.


asupports

✓


bdoes not support

✖


cis not related to

✖


dnone of the mentioned

✖


View Answer supports

Each _______ has its own index block.


apartition

✖


baddress

✖


cfile

✓


dall of the mentioned

✖


View Answer file

Contiguous allocation has two problems _________ and _________ that linked allocation solves.


aexternal – fragmentation & size – declaration

✓


binternal – fragmentation & external – fragmentation

✖


csize – declaration & internal – fragmentation

✖


dmemory – allocation & size – declaration

✖



A section of disk at the beginning of each partition is set aside to contain the table in _____________


afat

✓


blinked allocation

✖


chashed allocation

✖


dindexed allocation

✖


View Answer fat

The FAT is used much as a _________


astack

✖


blinked list

✓


cdata

✖


dpointer

✖


View Answer linked list

If the extents are too large, then what is the problem that comes in?


ainternal fragmentation

✓


bexternal fragmentation

✖


cstarvation

✖


dall of the mentioned

✖



A better way of contiguous allocation to extend the file size is _____________


aadding an extent (another chunk of contiguous space)

✓


badding an index table to the first contiguous block

✖


cadding pointers into the first contiguous block

✖


dnone of the mentioned

✖



With _______ a requested page and several subsequent pages are read and cached.


awrite ahead

✖


bread ahead

✓


cfree-behind

✖


dadd-front

✖


View Answer read ahead

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