CompTIA CompTIA Certifications LX0-104 Questions & Answers

• Question 11:

  Which of the following commands connects to the remote host example.com which has OpenSSH listening on TCP port 2222? (Choose TWO correct answers.)

  A. ssh --port 2222 example.com

  B. ssh -p 2222 example.com

  C. ssh -o Port=2222 example.com

  D. ssh -o GatewayPort=2222 example.com

  E. ssh example.com:2222

  Correct Answer: BC

• Question 12:

  Which of the following commands preloads and manages keys that are used for automatic authentication while logging in to other machines using SSH?

  A. sshd

  B. ssh-agent

  C. ssh-keygen

  D. ssh-add

  Correct Answer: B

• Question 13:

  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 provides the server's identity information to connecting SSH clients.

  C. It is the root key by which all user SSH keys must be signed.

  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.

  Correct Answer: B

• Question 14:

  Which of the following find commands will print out a list of files owned by root and with the SUID bit set in /usr?

  A. find /usr -uid 0 -perm +4000

  B. find -user root +mode +s /usr

  C. find -type suid -username root -d /usr

  D. find /usr -ls \*s\* -u root

  E. find /usr -suid -perm +4000

  Correct Answer: A

• Question 15:

  Which directory holds the files that configure the xinetd service when using several configuration files instead of an integrated configuration file? (Specify the full path to the directory.)

  A. /etc/xinetd.d/ -or- /etc/xinetd.d

  Correct Answer: A

• Question 16:

  Which file lists which users can execute commands using sudo? (Specify the full name of the file, including path.)

  A. /etc/sudoers

  Correct Answer: A

• Question 17:

  Which file contains a set of services and hosts that will be allowed to connect to the server by going through a TCP Wrapper program such as tcpd? (Specify the full name of the file, including path.)

  A. /etc/hosts.allow

  Correct Answer: A

• Question 18:

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

  A. core

  B. edquota

  C. ulimit

  D. quota

  Correct Answer: C

• Question 19:

  When trying to unmount a device it is reported as being busy. Which of the following commands could be used to determine which process is causing this?

  A. debug

  B. lsof

  C. nessus

  D. strace

  E. traceroute

  Correct Answer: B

• Question 20:

  Which configuration file would be edited to change default options for the OpenSSH server?

  A. /etc/ssh/sshd_config

  B. /etc/ssh/ssh

  C. /etc/ssh/server

  D. /etc/ssh/ssh_config

  E. /etc/ssh/ssh_server

  Correct Answer: A