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more OS questions help please

By alanboys ·
I find these questions in A+ book please answer these question for me thanks.. I have OS exam soon

1.What does a differential backup do?

A.Complete backup of all files.
B.Back up of files with the archive bit turned off.
C.Backs up files that differ from the first full back up.
D.Backs up all selected files that have changed since the last full backup.

2.What is the first step in performing an operating system upgrade?

A.Partition the drive.
B.Format the drive.
C.Backup critical data.
D.Backup old operating system.

3.What must be run from a command prompt so a MSDOS.SYS file can be edited in DOS?

A.RUN SYSEDIT
B.RUN REGEDIT
C.ATTRIB -S -H -R MSDOS.SYS
D.ATTRIB +S +H +R MSDOS.SYS

4.What command, in some cases, can repair a damaged master boot record?

A.FDISK/MBR
B.SCANDISK/B
C.SCANDISK/MBR
D.DRVSPCE/MBR

5.While logged in as a local administrator, you install an application on Windows NT 4.0 for an employee of your firm. You test it and it works fine. You reboot and tell her to log in and call you if she has a problem. She calls to report that the application will not run. You log in, and it runs fine. Why?

A.NTFS permissions prevent her from running the application.
B.Incorrect CD Key.
C.The EVERYONE group is missing in the application?s security properties.
D.The application was not installed by the user.

6.You uninstall an application and check the Start Menu. Its shortcut is still there. What two methods can be used to remove the shortcut?

A.Reboot the PC and allow the uninstall to complete.
B.Delete the item from the Device Manager.
C.Refresh Windows Explorer using the F5 key.
D.Right click the taskbar and choose Properties. Click Remove on the Start Menu programs tab.

7.What is the smallest unit of storage that Windows 9x can access on a hard drive?

A.File
B.Track
C.Sector
D.Cluster

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by kevg In reply to more OS questions help pl ...

1) D.Backs up all selected files that have changed since the last full backup.

2) C.Backup critical data.

3) C.ATTRIB -S -H -R MSDOS.SYS

4) A.FDISK/MBR

5) A.NTFS permissions prevent her from running the application.

6) D.Right click the taskbar and choose Properties. Click Remove on the Start Menu programs tab.

7) D.Cluster , but I'm not too sure about this one. Sector might be the correct ans. here.

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