Linux permission and file system

Which command allows the user to set permissions for files and directories?

• chgrp

• chmod

• umask

• su

Which of the following is an example of Absolute mode?

• chmod a=r filename

• chmod filename

• chmod

• chmod 757 filename

Which command displays the permissions for files and directories?

• ls -a

• ls -r

• ls -l

• ls

Which command is used to change the user or group of a file or directory?

• chown

• chmod

• umask

• su

Which statement reflects the principle of least privilege?

• Give a small number of users the most amount of access to all files.

• Give no access to any files for a large number of users, and give only the network engineer access to all files.

• Give the least number of users the least amount of file access first, and grant more permissions only when the user has a need.

• Give access to all groups, and each group can decide which individual has access to each file.

A Linux administrator downloaded a file from the internet. The administrator believes that the file is corrupted. Which Linux command can the administrator use to check whether a file is corrupted?

• grep

• cksum

• find

• diff

A Linux administrator must compare and display the outputs of two different files. Which Linux command can the administrator use to compare the file outputs?

• diff

• df

• find

• hash

Which statement about symbolic links is true?

• Symbolic links can’t link to any directory.

• Symbolic links point to actual files in any directory.

• Symbolic links point to a hard link, instead of the actual file.

• If a symbolic link links to a file and the file is deleted, the link will still work.

Which option for the tar command enables a user to create a tarball?

• -c tarball.tar

• -xf tarball.tar

• -v tarball

• -cvf tarball.tar

Which statements about Linux file names are true? (Select TWO.)

• File names are case sensitive.

• Multiple files with the same name can exist in a directory.

• File names can contain spaces.

• Extensions are optional.

• Extensions are automatically mapped to applications.