Free 102-500 Sample Questions — LPI Level 1

If neither cron.allow nor cron.deny exist in /etc/, which of the following is true?

• A. Without additional configuration, all users may create user specific crontabs
• B. Without additional configuration, only root may create user specific crontabs
• C. The cron daemon will refuse to start and report missing files in the system's logfile
• D. When a user creates a user specific crontab the system administrator must approve it explicitly
• E. The default settings of /etc/crond.conf define whether or not user specific crontabs are generally allowed or not

Which of the following commands sets the system's time zone to the Canadian Eastern Time?

• A. localegen -t -f /usr/share/zoneinfo/Canada/Eastern > /etc/locate.tz
• B. tzconf /etc/localtime
• C. sysctl -w clock.tz='Canada/Eastern'
• D. modprobe tz_ca_est
• E. ln -sf /usr/share/zoneinfo/Canada/Eastern /etc/localtime

Which of the following protocols is designed to access the video card output of a virtual machine?

• A. KDE
• B. X11
• C. Xfce
• D. SPICE
• E. XDMCP

Why is the correct configuration of a system's time zone important?

• A. Because the timezone is included in checksum calculations and timezone changes invalidate existing checksums
• B. Because the time zone is saved as part of the modification times of files and cannot be changed after a file is created
• C. Because the environment variables LANG and LC_MESSAGES are, by default, set according to the time zone
• D. Because NTP chooses servers nearby based on the configured time zone
• E. Because the conversion of Unix timestamps to local time relies on the time zone configuration

Which of the following steps prevents a user from obtaining an interactive login session?

• A. Setting the UID for the user to 0
• B. Running the command chsh -s /bin/false with the user name
• C. Removing the user from the group staff
• D. Adding the user to /etc/noaccess
• E. Creating a .nologin file in the user's home directory

Which of the following is true about IPv6?

• A. IPv6 no longer supports broadcast addresses
• B. With IPv6, the TCP port numbers of most services have changed
• C. IPv4 addresses can be used without any change with IPv6
• D. IPv6 no longer supports multicast addresses
• E. For IPv6, UDP and TCP have been replaced by the Rapid Transmission Protocol RTP

Which of the following comparison operators for test work on elements in the file system? (Choose two.)

• A. -z
• B. -eq
• C. -d
• D. -f
• E. -lt

Which of the following commands displays all environment and shell variables?

• A. getargs
• B. lsenv
• C. ls
• D. env
• E. lsshell

What is a purpose of an SSH host key?

• A. It must be sent by any SSH client in addition to a user key in order to identify the client's host
• B. It is root key by which all user SSH keys must be signed
• C. It provides the server's identity information to connecting SSH clients
• D. It authenticates any user that logs into a remote machine from the key's host
• E. It is used by system services like cron, syslog or a backup job to automatically connect to remote hosts

What output is produced by the following command sequence? echo '1 2 3 4 5 6' | while read a b c; do echo result $c $b $a; done

• A. result: 6 5 4
• B. result: 1 2 3 4 5 6
• C. result: 3 4 5 6 2 1
• D. result: 6 5 4 3 2 1
• E. result: 3 2 1

Which option in the chrony configuration file changes the initial interval of polls to a NTP server in order to speed up the initial synchronization?

• A. iburst
• B. quickstart
• C. fast
• D. fsync
• E. flood

Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing? (Choose three.)

• A. 10.0.0.0/8
• B. 127.0.0.0/8
• C. 169.255.0.0/16
• D. 172.16.0.0/12
• E. 192.168.0.0/16

What is true regarding public and private SSH keys? (Choose two.)

• A. For each user account, there is exactly one key pair that can be used to log into that account
• B. The private key must never be revealed to anyone
• C. Several different public keys may be generated for the same private key
• D. To maintain the private key's confidentiality, the SSH key pair must be created by its owner
• E. To allow remote logins, the user's private key must be copied to the remote server

Which of the following tasks can the date command accomplish? (Choose two.)

• A. Set the system's date and time
• B. Set the system's date but not the time
• C. Calculate the time span between two dates
• D. Print a calendar for a month or a year
• E. Display time in a specific format

Which of the following commands finds all files owned by root that have the SetUID bit set?

• A. find / -user root -perm -4000
• B. find / -user 0 -mode +s
• C. find / -owner root -setuid
• D. find / -owner 0 -permbits 0x100000000
• E. find / --filter uid=1 --filter pers=u+s

Which of the following configuration files should be modified to globally set shell variables for all users?

• A. /etc/profile
• B. /etc/bashrc
• C. ~/.bash_profile
• D. /etc/.bashrc
• E. /etc/shellenv

What information related to a user account is modified using the chage command?

• A. Default ownership for new files
• B. Group membership
• C. Set of commands available to the user
• D. Password expiry information
• E. Default permissions for new files

Which of the following parameters are used for journalctl to limit the time frame of the output? (Choose two.)

• A. --since=
• B. --from=
• C. --until=
• D. --upto=
• E. --date=

Which of the following commands shows all active systemd timers?

• A. systemctl-timer show
• B. timectl list
• C. systemctl ""t
• D. systemctl list-timers
• E. timeq

After editing the TCP wrapper configuration to grant specific hosts access to a service, when do these changes become effective?

• A. The new configuration becomes effective after restarting the respective service
• B. The new configuration becomes effective at the next system reboot
• C. The new configuration becomes effective when the last established connection to the service is closed
• D. The new configuration becomes effective after restarting the tcpd service
• E. The new configuration becomes effective immediately for all new connections