Disk Operating System (DOS) Questions

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81.

Which command is used to delete all the files extension .txt on the current drive and directory?

A

Del .txt

B

Erase .txt

C

Del *.txt

D

Del *.*/p

Correct Answer: C

None.

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82.

Which command is used to delete all the files in the root directory of drive a

A

A:\del

B

Del *.* a:

C

Del a:\

D

Erase *.*

Correct Answer: C

None.

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83.

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

Correct Answer: C

None.

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84.

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

Correct Answer: B

None.

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85.

Which file in MSDOS contain internal command that are loaded during booting process?

A

Io.sys

B

Msdos.sys

C

Command.com

D

Config.sys

Correct Answer: C

None.

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86.

Which is the valid filename assign in MS-DOS?

A

Ram*.txt

B

Ram?.doc

C

Ram_$.txt

D

None of above

Correct Answer: C

None.

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87.

Which is valid extension that user creates on operating system?

A

Exe

B

Com

C

Sys

D

Bat

Correct Answer: D

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88.

Which of the following file names are invalid in MSDOS?

A

MYFILE.DOS

B

CHECK$.(1)

C

Verified.###

D

Qwerty.1?3

Correct Answer: D

None.

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89.

Which of the following statements in regard to directories is false?

A

Directories can exist inside directories

B

The root directory is always at the highest level

C

Directories with files can be deleted

D

Directories cannot be renamed

Correct Answer: D

None.

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90.

Which of the following statements is true in regard to diskcopy?

A

Copy and discopy are same

B

Discopy is a built in command in dos

C

Diskcopy can be used on hard disks

D

Diskcopy can be used with a floppy and a hard disk

Correct Answer: C

None.

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