117-102 Exam Questions

The files /etc/hosts.allow, /etc/hosts.deny and /etc/nologin all exist on your computer and the sshd daemon is running. What will happen when users try to connect with ssh?

You want to change the aging information in the /etc/shadow file. What is the best utility to use to do this?

You've been reviewing your security checklist and one of the items calls for reviewing the /etc/passwd file. You cat the file and notice that, while most users have an x in the sec...

What is a well-known service that binds port 25 and is it required on all hosts?

How many cron fields are there for specifying the time to execute a cron job?

What program do you use to suspend a printer queue?

What would the following command do? $ cat hosts | lpr -#2

The hosts.lpd file provides:

What file is displayed BEFORE users log in to the machine locally?

Which two files in a user's home directory are used to customize the bash environment?

Which of the following files has the correct permissions?

You are working in a graphical environment and trying to configure PPP, but you are having problems. You know that PPP uses the local2 facility for logging. To better watch what's...

What command do you use to create an OpenSSH authentication key?

Which of the following will flush all print jobs on all configured queues of the system?

What is the purpose of the bash built-in export command

Your /etc/passwd file appears to have approximately half shadow passwords and half standard unix excrypted passwords. What utility would you most likely run to fix this?

Where are the default settings for the useradd command kept?

You find you execute a series of commands on a recurring basis. You want this series of commands available from your login to run in the current shell. Choose the best solution:

Which of the following programs uses the hosts.allow file to perform its main task of checking for access control restrictions to system services?

Which of the following services would least be likely to be governed over by the Internet Super Server?

You are running an email server configured with the default settings. In which directory will you find the delivered mail for the user foo?

Which directory in a user's home contains configuration files and key rings for GPG?

Which of the following services is NOT usually protected via TCP wrappers?

Your server was rebooted. Users have complained that the server refuses secured connections. What is the mostly likely cause?

A cronjob must run at least every 11 minutes. The job may take up to 7 minutes to complete, and there mustn't be two jobs at the same time. Which crontab line solves the problem?

To see the current time set by a NTP clock, you use the command:

The file /etc/ssh/ssh_host_key should be:

You've decided to convert from standard shadow passwords to MD5 passwords. You make the appropriate changes to the /etc/pam.d/ files. What do you do next?

Which of the following commands can be used to view kernel messages?

Which of the following commands will print the file putty on the printer hplaserj? (Choose Two)

Your server has two fully functional NICs with correct IP configuration. The server is not forwarding traffic between the NICs. Which command will enable forwarding properly?

Which port is used for DNS?

Which parameters should appear in a valid /etc/printcap file to allow a local printer queue to point to another machines print queue?(Choose Two)

While performing a security audit, you discover that a machine is accepting connections on TCP port 184, but it is not obvious which process has the port open. Which of the followi...

Your server logfile shows repeated connections to TCP port 143. What service is being accessed?

To learn more about the management or ownership of a website, what's the best utility to use?

What command would cause a print job to be printed next regardless of its current position in the queue.

Which two files are responsible for allowing users to execute cron jobs?

What file must you create in your home directory in order to enable mail forwarding?

The _____ is used by the local host to determine which hosts are on the local subnet, and which hosts are on remote networks.

To disable telnet service on a system, which action should you take?

In what file are the mail aliases kept for Sendmail? (Provide the complete path)

What are reverse DNS entries used for?

What file determines the DNS servers used by your computer?

To create a user account, keep in mind that the username is at most __ characters long.

When you use DNS to find a hostname using a particular IP address, which kind of DNS entry is involved?

Your senior system administrator asked you to edit the /etc/inetd.conf file in order to disable the time service. After doing so, what would be the next thing to do?

You have a Linux system routing 3 networks through 3 separate NICs and are having trouble with your IP forwarding. What file would you check to ensure that IP forwarding is enabled...

Which command will delete the environment variable FOOBAR?

Your network email server's address has changed. Which DNS record do you have to edit?