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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