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Which three compression programs can tar use to natively filter an archive?
Which two actions are the required steps to prevent: non-root ssh access to the system?
D: If the file /etc/nologin exists, only root is allowed to log in; other users are turned away with an error message.
Note:
* In some cases, the security policy may dictate additional mechanisms, such as TCP wrappers, Pluggable Authentication Modules (PAM), or the implementation of Security-Enhanced Linux (SELinux).
Examine this output:
# df --t nfs
FilesystemSizeUsedAvailUse%Mounted on
o16:export30G21G7.6G74%/mnt
# 1s -1 /mnt/nfs.sh
-rwxr-mr-x. 1 root root 22 May 8 16:37 /mnt/nfs.sh
# file /mnt/nfs.sh
/mnt/nfs.sh: Bourne-Again shell script text executables
# /mnt/nfs.sh
bash: /mnt/nfs.sh: Permission denied
What is the reason for the error?
Which statement is FALSE concerning the use of OpenSSH utilities? (Choose the best answer.)
Examine the commands and output related to the use of the cron facility:
Which three statements are true concerning the use of the crontab utility? (Choose three.)
