- df -h
- listid
- ls -l
- blkid
- discretionary access control system permissions layered over standard Linux permissions
- mandatory access control system permissions layered over standard Linux permissions
- a type of firewall for Linux
- the same as standard Linux permissions
- route -ipv6
- route
- ip -6 route show
- ip route show
find / -size +10M -exec ls -l {} ;- It finds all files using ls -l and hands them off to the find command to display.
- It finds all files older than 10 minutes and long lists them using the ls command.
- It finds all files larger than 10 MB and long lists them using the ls command.
- It uses the ls command to find all files in the filesystem matching the {} wildcard.
locate --regexp '^/usr.*pixmaps.*jpg$'- all files in a directory named pixmaps
- all files ending in ".jpg"
- all file paths that start with "/usr", include the word "pixmaps", and end with ".jpg"
- all file paths that include "/usr/pixmaps" and end with ".jpg"
- wireshark
- ethtool
- netstat
- tcpdump
- log
- uptime
- runtime
- access
- It is an application testing suite used to profile programming code.
- It is a local command used for monitoring local system resources in real time.
- It is a set of tools, services, and libraries for gathering and analyzing performance measures.
- It is a tool designed to change system configuration for purposes of optimization.
- Create a text file including all names and use the -f option of dig.
- Type in each query manually.
- Write a shell script to send multiple dig queries to the DNS server.
- Save the DNS names in an SQL database and process it with dig.
ps -e --format uid,pid,ppid,%cpu,cmd
- the user ID, process ID, parent process ID, CPU usage, and command name of a process
- the user ID, group ID, parent process ID, CPU usage, and command name of a process
- the UUID, process ID, parent process ID, CPU usage, and command name of a process
- all of these answers
- !
- !!
- !*
- !ls
- both private and public keys
- the ssh public key
- the ssh private key
- a fingerprint file
- find
- fdisk
- du
- df
Q14. A backup drive was created using dd to make a bit-for-bit copy. When the drive is inserted into an iSCSI target before it is booted up, the data appears to be missing. What happened?
- The backup drive is corrupted and needs to be re-created.
- When the backup drive was duplicated, the label was as well. When booted, the system mounted the old duplicated drive by its identical label.
- There is a conflict between the physical location of the backup drive and the original drive.
- The backup process went wrong, and the old drive was duplicated over the original drive.
- The tee command sends output only to STDOUT and STDERR.
- A redirect sends output to STDOUT and a file, whereas a tee sends output only to STDOUT.
- Nothing, they are the same.
- The tee command sends output to STDOUT and a file, whereas a redirect sends output only to a file.
- priority of one DNS server over another
- per network interface DNS server configuration
- alternative DNS services
- sources for name service information
Q17. Assume the variable myNumber holds a string consisting of 10 digits. What will this command output?
echo \$myNumber | sed -e 's/^[[:digit:]][[:digit:]][[:digit:]]/(&)/g'- It will only match digits—and since the string has only digits, the command will output the same number without changes.
- It will output the same 10-digit number, but every digit will be inside parentheses.
- It will output the entire 10-digit number inside parentheses.
- It will output the same 10-digit number, but the first 3 digits will be inside parentheses.
- None of these answers. yum does not support downloading packages without installing them.
- --downloaddir
- -d
- --downloadonly
[0-9]
- [[:alnum:]]
- [[:digit:]]
- [[:alpha:]]
- [[:num:]]
Q20. When archiving files, which command will preserve all file attributes including ACLs and SELinux security context?
- zip
- tar
- archive
- gzip
Q21. In a systemd-based OS, you can change the system hostname by editing /etc/hostname manually and then doing what?
- Restart dhcpd.
- Run /etc/hostname.
- Nothing, the system notices automatically.
- Notify systemd to update it by restarting the systemd-hostnamed service.
Q22. What command would you use to resize an LVM volume group to include an additional physical volume?
- vgadd
- vgresize
- vgappend
- vgextend
0 1 * * *
- every minute of the hour
- every hour of every day
- every day at 1:00 AM
- only on Mondays
Q24. ifconfig has been deprecated. What command is now recommended for changing IP addresses in the live config?
- netconf
- ipconfig
- ipman
- ip
Q25. You are managing an Apache web server on a system using SELinux. By default it cannot read personal webpages in users' home directories. What SELinux boolean would you set to allow this?
- apache_enable_homedirs
- httpd_enable_userdirs
- httpd_enable_homedirs
- httpd_enable_userhome_dirs
- The passwd command is not used for locking passwords.
- There is no password -l option.
- It locks only the password, not the account, so users can still authenticate with keys or other methods.
- It does lock the account, keeping users from logging in even if they are using other authentication methods.
- Piping into | pipes both stdout and stderr. Piping into |& pipes only stderr.
- Piping into | pipes stdout. Piping into |& pipes stdout and stderr.
- Piping into | pipes both stdout and stderr. Piping into |& pipes only stdout.
- Piping into | pipes stdout. Piping into |& pipes all open file descriptors.
- The kernel identifies it as one of the names of extended commands.
- It has the same name as the file it modifies.
- It has the SUID permission mode and is owned by root.
- It is a system administration command.
- always ask for confirmation
- back up the file before it deletes the file
- ask for confirmation if configured to do so
- never ask for confirmation
- Access to a drive is faster than with standard partitions.
- Volumes can be resized smaller without unmounting them.
- Repairing filesystem errors is easier than with standard partitions.
- Volumes can be resized even if the free space is not contiguous.
- Globs create a list; brace expansion matches pattern.
- Brace expansion requires files to exist; globs do not.
- Brace expansion creates a list; globs match the list of pathnames.
- Globs get processes first and brace expansion later.
- -d
- -k
- -b
- -x
- [ ]
myVar = 5
[[ $myVar -lt 10 ]] && echo " Hello World"- [x]
myVar = 5
[[ $myVar -lt 10 ]] || echo " Hello World"- [x]
myVar = 5
[[ $myVar -gt 10 ]] && echo " Hello World"- [ ]
myVar = 5
[[ $myVar -gt 10 ]] || echo " Hello World"- shell aliases
- userid
- environmental variables
- scheduling priority
- no_admin_squash
- no_root_squash
- allow_root_access
- all_squash
Q36. You send an email to a remote client using the following syntax. What will be in the body of the email?
date | mail -s "This is a remote test" user1@rhhost1.localnet.com- "This is a remote test"
- the date, the time, and the words "This is a remote test"
- The email subject shows "This is a remote test" but the body of the email will be empty.
- the current date and time
- resolving the local name
- blocking sites using iptables
- setting the hostname
- configuring DNS name servers
Q38. In an extended regular expression, you would use (pattern){3} to match three instances of the pattern. How would you match the same thing with an extended glob?
- 3(pattern)
- {0,3}(pattern}
- Occurrence quantifiers are not supported in Bash's version of extended globs, so this is not possible.
- {3}(pattern})
- Samba uses Linux operating system groups from the /etc/group file; just specify the group name.
- It would be preceded by a percent sign (%), such as %engineers.
- Use the group name by itself; Samba checks for its existence.
- It would be preceded by an @ symbol, such as @engineering.
- krb5-workstation
- ktutil
- pam_krb5
- kdb5_util
Q41. To search from the current cursor position up to the beginning of the file using VIM, type _ and then the search criteria.
- ?
- \
- /
- /search
- It is a graphical tool that manages network connections, including bonding and wireless networks.
- It is a security service that manages user access control of local network-aware services.
- It attempts to keep an active network connection available at all times.
- It is a command-line tool that manages network connections.
- to log out a user
- to lock a user's account
- to change global user account settings
- to set a user's password
- It prepares the filesystem for use by defragmenting it.
- It resizes the filesystem to match the volume group size.
- It does nothing.
- It remounts the filesystem with the new size.
sed -E 's/[a-Z]{4}/($)/' textfile.txt- It would substitute the letter with an ampersand (&).
- It would replace all letters in the textfile.txt file with ampersand (&).
- It would replace the first four letters with an ampersand (&).
- It would place parentheses around the first four letters of each line of textfile.txt.
Q46. With GNU tools such as GNU grep, awk, and sed, what is difference between regular expressions (BREs) and extended regular expressions (EREs)?
- EREs support occurrence operators.
- Only the syntax differs.
- EREs support alternation.
- EREs can match groups.
- bonding.
- team.
- netbond.
- bond.
find / -size -10K -exec ls -l {} \;- It finds all files larger than 10k and long lists them using the ls command.
- It finds all files of size 10k using ls -l and hands them off to the find command to display.
- It finds all files in the / directory of size 10k and long lists them.
- It finds all files in the file system smaller than 10k and long lists them using the ls command.
- /proc/swapiness
- /etc/fstab
- /etc/mounts
- /etc/swaps
- systemctl list-services.
- chkconfig --list-all
- systemctl list-unit-files -at service
- systemctl list-unit-files -t service
- gpasswd
- passwd
- editsam
- grouppass