LFCS Exam Questions

What file is typically used to display messages at the login prompt when remote users telnet in to the machine?

Which of the following information is not provided by the command netstat?

Which of the following is an example of an ICMP packet with a message type?

Which of the following find command will print out a list of suid root files in /usr?

Man pages cover what topics? (Choose Three)

Which of the following lines would you find in the file /etc/hosts?

The user bob complains that he cannot access his email. In which directory would you look to see if there is any deliverable email for him?

To avoid spammers using your mail server to relay their messages, you need to _______.

One of your users has installed a commercial publishing program that works under X on a variety of UNIX and Linux platforms. The user made a series of configuration changes regardi...

Which of the following answers regarding user account configuration are true?(Choose two)

Which commands can you use to change a user's password expiry information? (Choose Three)

Your machine's IP address used to function, but it's only got the localhost "lo" entry now. What three client-mode commands could you possibly use to get a new DHCP address?

Which of the following lines would you expect to see in the file /etc/services?

Which file is responsible for configuring the inet daemon?

Which of the following lines would you expect to see in the file /etc/protocols?

The following excerpt is from what standard network configuration file? ftp 21/tcp fsp 21/udp fspd ssh 22/tcp # SSH Remote Login Protocol ssh 22/udp telnet 23/tcp smtp 25/tcp mail...

The user space log daemon is called ...?

How can you verify the integrity of the /etc/passwd file?

Which of the following lines is an example of a correct setting for the DISPLAY environment variable?

Which of the following characters in the password field of /etc/passwd is used to indicate that the encrypted password is stored in /etc/shadow?

Which of the following commands can be used to change a user's account aging information? (Select THREE).

Why is /etc/shadow not world readable if the passwords are stored in an encrypted fashion?

Of the ways listed, which is the best way to temporarily suspend a single user's ability to interactively login?

Which crontab entry could be used to set the system time at regular intervals?

Which of the following commands can be used to convert text files in one character encoding to another character encoding?

Which of the following commands is used on the command line to send messages to the syslog systems.

According to the FHS, where are user mailboxes kept? Assume that mail is not being delivered to somewhere in their home directories.

The legacy program, provided by CUPS for sending files to the printer queues on the command line is:

Which of the following is the purpose of the nsswitch.conf file?

Identify the statement that would create a default route using a gateway of 192.168.1.1.

Which of the following commands can deconfigure a network interface?

Which of the following commands manipulates the TTL (Time to Live) field in the IP protocol in order to get ICMP responses from gateways along the path to a host?

Which of the following commands is used to set restrictions on the size of a core file that is created for a user when a program crashes?

Which of the following configurations file does sudo read when determining if a user is permitted to run applications with root privileges?

When generating new authentication keys with SSH for a user, where should the private key be kept?

Which of the following benefits does an alias in bash provide?

An administrator is looking into a new script they received from a senior executive. In the very first line the administrator notices a #! followed by a file path. This indicates t...

Why is the xhost program considered dangerous to use?

Of the ways listed, which is the best method to temporarily suspend a user's ability to interactively login?

Which of the following is the conventional purpose of Linux UIDs that are lower than 100?

How is the file format of /etc/crontab different from a normal crontab file? (Select TWO).

Which of the following is the main difference between the batch and at commands?

The correct crontab entry to execute the script chklog three times per month between 3 p.m. and 5 p.m.:

On a dual boot system, every time the system is booted back into Linux the time has been set backward by one day. Which of the following commands will correct the problem?

Which of the following commands should be used to print a listing of email in the system's mail queue?

Which of the following statements is true regarding the following /etc/resolv.conf file? search example.com nameserver 208.77.188.166 nameserver 208.77.188.167

An administrator suspects that a gateway machine on the network has failed but they are unsure which machine. Which of the following commands will help locate the problem?

Which of the following commands is used to hold keys during a login session to be used for automatic authentication while logging in to other machines using ssh?

What keyword is missing from this code sample of a shell script? ____ i in *.txt; do echo $i done

Which of the following bash options will prevent an administrator from overwriting a file with a ">"?