Related Questions

The average of five numbers is 6.9. If one of the numbers is deleted, the average of the remaining numbers is 4.4. What is the value of the number deleted?
A 6.8
B 7.4
C 12.5
D 16.9
Cascading updates refers to child rows being automatically deleted when a parent row is deleted.
A True
B False
Which command in DOS can be used to recover accidentally deleted files?
A UNDELETE
B DELETE/CANCEL
C RESTORE
D RECOVER
Which command is used to display a list of deleted files that DOS can undelete?
A Undelete *.*
B Undelete/all
C Undelete/list
D None of the above
Which command is used to undelete delete a bunch of files with extension doc that you have just deleted
A Undelete
B Undelete *.doc
C Undelete/all
D All of the above
While working with MS-DOS, which command is used to undelete a bunch of files with extension DOC that you have just deleted?
A UNDELETE
B UNDELETE *.DOC
C UNDELETE/ALL
D UNDELETE/LIST
E None of the above
While working with MS-DOS, which command is used to display a list of deleted files that DOS can undelete?
A UNDELETE *.*
B UNDELETE/ALL
C UNDELETE/LIST
D UNDELETE
E None of the above
Which command is used to delete all files in the current directory as well as all files and sub-directories in its subdirectories?
A rm *
B rm -r *
C rm all
D rm *.*
E None of the above
On-line transaction processing is used when ______________. I) it is required to answer random queries. II) it is required to ensure correct processing. III) all files are available on-line. IV) all files are stored using hard disk.
A i, ii
B i, iii
C ii, iii, iv
D i, jj ,iii
Which command is used to list out all the hidden files along with the other files?
A ls -l
B ls -x
C ls -F
D ls -a
E None of the above

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