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Linux

Linux
What command is used to summarize the disk usage?

chkdsk
fdisk
disk
du

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Linux
Which class network is used for a collection of a small number of networks with a large number of nodes?

Class A
Class B
None of these
Class C
All of these

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Linux
Which command can force all buffers to disk?

save
edbuff
flush
sync
None of these

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Linux
The command chmod 761 letter is equivalent to

chmod 4=7, g = 6, o = 1 letter
chmod u = rwx, g = rw, o = x letter
None of the listed here
chmod a = 761 letter

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Linux
How many primary partitions can exist on one drive?

1
16
None of these
2
4

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Linux
What command is used with vi editor to save file and remain in the editing mode?

:q
x
None of the listed here
:w

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