The permissions value are always 4 for read, 2 for write, 1 for execute. The three numbers are always for owner, group, and everybody on the system. Therefore 645 means: owner - read and write, group - read only, everybody - read and execute. You’ll rarely see such a permission set, but for interview question it might just work.
Internal command in Dos are a. Cls, rd label b. Dir, ren, sys c. Time, type, dir d. Del, disk copy, label
Which command is used to copy files? a. Copy b. Diskcopy c. Type d. All of the above
To copy the hidden system files of DOS to another disk you can use the command a. Copy b. Ren c. Sys d. Diskcopy
Which command is used to backup in DOS 6+ Version? a. BACKUP b. MSBACKUP c. MSBACKEDUP d. All of the above
SYS command is used to a. Copy DOS system files to new disk b. Copy DOS configuration files to a new disk c. Update the DOS system files d. None of above
The command used to copy a file named temp.doc from drive C to drive A is a. Copy temp.doc to a b. Copy ctemp.doc a c. Copy c a d. Copy temp a c
External command in DOS are a. Copy, edit, sys, format b. Edit, sys, chkdsk c. Chkdsk, prompt, date d. Sys, ver, vol
Which keys can be pressed quit without saving in DOS a. Ctrl + A b. Ctrl + B c. Ctrl + C d. Ctrl + D
Disk copy command in DOS is used to a. Copy a file b. Copy contents of one floppy disk to another c. Copy contents of CD-ROM to another d. All of the above
Which command is used to get the current date only? a. Date b. Time c. Second d. All of the above
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