Question 1

A file server is sharing a directory called /share between team members inside a company. The fileshare needs to be moved from serverA to /newshare located on serverB with all permissions and attributes preserved. Which of the following commands would BEST achieve this task?

Accepted Answer

A)  rsync -aHAX /share/* serverB:/newshare 
B)  dd if=/share/* of=serverB:/newshare 
C)  tar -cvf /share/* serverB:/newshare 
D)  mirrorlv /share/* serverB:/newshare

Question 2

In which of the following directories is the vmlinuz file located?

Accepted Answer

A)  /boot 
B)  /etc 
C)  /bin 
D)  /proc

Question 3

A Linux administrator wants to configure log messages of critical or higher severity levels from the cron utility to be logged to the console. Which of the following will accomplish this objective?

Accepted Answer

A)  Edit the /etc/logrotate.d/cron file to include the line cron.emerg.* /dev/console Edit the /etc/logrotate.d/cron file to include the line cron.emerg.* /dev/console 
B)  Edit the /etc/rsyslog.conf file to include the line cron.emerg.* /dev/console /etc/rsyslog.conf 
C)  Edit the /etc/logrotate.conf file to include the line cron.emerg.* /dev/console /etc/logrotate.conf 
D)  Edit the /etc/rsyslog.d/conf file to include the line cron.emerg.* /dev/console /etc/rsyslog.d/conf file to include the line

Question 4

Which of the following Linux server roles should be installed to monitor and log local web traffic?

Accepted Answer

A)  Proxy server 
B)  AAA server 
C)  SSH server 
D)  HTTP server 
E)  Name server

Question 5

A Linux systems administrator wants the ability to access systems remotely over SSH using RSA authentication. To which of the following files should the RSA token be added to allow this access?

Accepted Answer

A)  authorized_keys 
B)  ~/.ssh/ssh_config 
C)  id_rsa.pub 
D)  known_hosts

Question 6

An administrator is attempting to block SSH connections to 192.168.10.24 using the Linux firewall. After implementing a rule, a connection refused error is displayed when attempting to SSH to 192.168.10.24. Which of the following rules was MOST likely implemented?

Accepted Answer

A)  iptables -A -p tcp -d 192.168.10.24 --dport 22 -j REJECT 
B)  iptables -A -p tcp -d 192.168.10.24 --dport 22 -j DROP 
C)  iptables -A -p tcp -d 192.168.10.24 --dport 22 -j FORWARD 
D)  iptables -A -p tcp -d 192.168.10.24 --dport 22 -j REFUSE

Question 7

A Linux administrator attempts to install the package newprogram.x86_64.rpm using a package manager. The administrator receives a warning indicating the command that was run was using a deprecated package manager. Which of the following commands should the administrator use to avoid the warning and install the program?

Accepted Answer

A)  # dnf install newprogram.x86_64.rpm 
B)  # rpm -e newprogram.x86_64.rpm 
C)  # dpkg -i newprogram.x86_64.rpm 
D)  # apt-get install newprogram.x86_64.rpm

Question 8

Which of the following is a difference between YAML and JSON?

Accepted Answer

A)  Users can comment in YAML but not in JSON 
B)  JSON only uses curly brackets, while YAML only uses square brackets 
C)  JSON is used in web development, while YAML is used solely in back-end systems. 
D)  YAML has been deprecated for JSON.

Question 9

Which of the following is a difference between YAML and JSON?

Accepted Answer

A)  Users can comment in YAML but not in JSON 
B)  JSON only curly brackets, while YAML only uses square brackets 
C)  JSON is used in web development, while YAML is used solely in back-end systems. 
D)  YAML has been deprecated for JSON.

Question 10

Which of the following will provide a list of all flash, external, internal, and SSD drives?

Accepted Answer

A)  lspci 
B)  lsmod 
C)  lsblk 
D)  lsusb

Question 11

An administrator notices a directory on a web server named /var/www/html/old_reports that should no longer be accessible on the web. Which of the following commands will accomplish this task?

Accepted Answer

A)  chmod 000 /var/www/html/old_reports 
B)  chgrp root /var/www/html/old_reports 
C)  chown apache /var/www/html/old_reports 
D)  setenforce apache /var/www/html/old_reports

Question 12

A Linux administrator has installed a web application firewall in front of a web server running on HTTP port 8080 and successfully started the HTTP server. However, after opening the application URL in an Internet browser, the administrator discovered that the application does not work. The administrator performed the following diagnostic steps: Output of sysctl -a command:  iptables -L  netstat -nltop | grep "8080" :  Which of the following is the NEXT step the administrator should perform to permanently fix the issue at the kernel level?

Accepted Answer

A)  sysctl -w net.ipv4.ip_forward=1 then run sysctl -w /etc/sysctl.conf to enable the change sysctl -w net.ipv4.ip_forward=1 then run sysctl -w /etc/sysctl.conf to enable the change 
B)  Edit /etc/sysctl.conf file and add net.ipv4.ip_forward = 1 then run sysctl -p /etc/sysctl.conf to enable the change Edit /etc/sysctl.conf file and add net.ipv4.ip_forward = 1 sysctl -p /etc/sysctl.conf 
C)  Add iptables rule iptables -A INPUT -m state --state NEW -p tcp --dport 8080 -j then restart httpd daemon Add iptables rule iptables -A INPUT -m state --state NEW -p tcp --dport 8080 -j then restart httpd daemon 
D)  Add iptables rule iptables -A FORWARD-m state --state NEW -p tcp --dport 8080 -j ACCEPT then restart httpd daemon iptables -A FORWARD-m state --state NEW -p tcp --dport 8080 -j ACCEPT

Question 13

Which of the following can be used to check the status of wireless devices that are connected to the system?

Accepted Answer

A)  lsusb 
B)  iwconfig 
C)  netstat 
D)  ifconfig

Question 14

A junior systems is configuring localization option environment variables. The administrator is given a checklist of tasks with the following requirements: View current settings of the LC_ALL environment variable only. Modify the LANG environment variable to US English Unicode. Given this scenario, which of the following should be performed to meet these requirements? (Choose two.)

Accepted Answer

A)  echo $LC_ALL 
B)  locale 
C)  cat $LC_ALL 
D)  export LANG = en_US.UTF-8 
E)  export $LANG = en_US.UTF
F) stty

Question 15

All users are reporting that they cannot connect to the SFTP server. The administrator runs a scan:  Which of the following would allow the administrator to fix the problem?

Accepted Answer

A)  Allow SFTP connections on port 22 using /etc/sysconfig/iptables . Allow SFTP connections on port 22 using /etc/sysconfig/iptables . 
B)  Allow SFTP connections on port 20 and 21 using /etc/sysconfig/iptables . Allow SFTP connections on port 20 and 21 using 
C)  Allow SFTP connections on port 25 using /etc/sysconfig/iptables . Allow SFTP connections on port 25 using 
D)  Allow SFTP connections on port 1456 using /etc/sysconfig/iptables . Allow SFTP connections on port 1456 using

Question 16

Which of the following commands will let a Linux user know the PCI devices that are installed in the system?

Accepted Answer

A)  cat /proc/devices/pci 
B)  lspci 
C)  lsdev 
D)  cat /proc/sys/dev

Question 17

A technician suspects a company's border firewall is down, thus blocking Internet access. The technician executes the following commands: #ping -c 1 firewall.company.com 64 bytes from firewall.company.com (192.168.1.1): icmp_seq=1 ttl=64 time=0.061ms #ping -c 16 www.comptia.com 16 packets transmitted, 0 received, 100% packet loss, time 14999ms Which of the following commands should the technician use to BEST determine the source of this outage?

Accepted Answer

A)  tcpdump 
B)  nmap 
C)  dig 
D)  traceroute

Question 18

A junior systems administrator is tasked with providing the network_administrators group the ability to perform sudo without prompting for a password. Which of the following steps should the administrator perform to accomplish this task? (Choose two.)

Accepted Answer

A)  Use visudo to edit the /etc/sudoers file and add network_administrators to the "wheel" group Use visudo to edit the /etc/sudoers file and add to the "wheel" group 
B)  Use vi to edit the /etc/sudo file and add network_administrators to the "wheel" group vi /etc/sudo 
C)  Provide all network_administrators with the "root" account password Provide all with the "root" account password 
D)  Add the network_administrators ALL=(ALL) NOPASSWD: ALL directive to the /etc/sudoers file Add the network_administrators ALL=(ALL) NOPASSWD: ALL directive to the file 
E)  Add the network_administrators =(ALL) NOEXEC: ALL directive to the /etc/sudoers file =(ALL) NOEXEC: ALL

Question 19

A corporate server security policy states, "Ensure password hashes are not readable by non-administrative users." The administrator should check the permissions on which of the following files to ensure the server satisfies this policy?

Accepted Answer

A)  /etc/shadow 
B)  /etc/passwd 
C)  /etc/group 
D)  /etc/security/limits.conf

Question 20

An administrator has modified the configuration file for a service. The service is still running but is not using the new configured values. Which of the following will BEST remediate this issue?

Accepted Answer

A)  kill -HUP 
B)  init 0 
C)  service start 
D)  renice -10

Exam 18: CompTIA Linux+

A file server is sharing a directory called /share between team members inside a company. The fileshare needs to be moved from serverA to /newshare located on serverB with all permissions and attributes preserved. Which of the following commands would BEST achieve this task?

In which of the following directories is the vmlinuz file located?

A Linux administrator wants to configure log messages of critical or higher severity levels from the cron utility to be logged to the console. Which of the following will accomplish this objective?

Which of the following Linux server roles should be installed to monitor and log local web traffic?

A Linux systems administrator wants the ability to access systems remotely over SSH using RSA authentication. To which of the following files should the RSA token be added to allow this access?

An administrator is attempting to block SSH connections to 192.168.10.24 using the Linux firewall. After implementing a rule, a connection refused error is displayed when attempting to SSH to 192.168.10.24. Which of the following rules was MOST likely implemented?

Which of the following is a difference between YAML and JSON?

Which of the following is a difference between YAML and JSON?

Which of the following will provide a list of all flash, external, internal, and SSD drives?

An administrator notices a directory on a web server named /var/www/html/old_reports that should no longer be accessible on the web. Which of the following commands will accomplish this task?

Which of the following can be used to check the status of wireless devices that are connected to the system?

All users are reporting that they cannot connect to the SFTP server. The administrator runs a scan: Which of the following would allow the administrator to fix the problem?

Which of the following commands will let a Linux user know the PCI devices that are installed in the system?

A junior systems administrator is tasked with providing the network_administrators group the ability to perform sudo without prompting for a password. Which of the following steps should the administrator perform to accomplish this task? (Choose two.)

A corporate server security policy states, "Ensure password hashes are not readable by non-administrative users." The administrator should check the permissions on which of the following files to ensure the server satisfies this policy?

An administrator has modified the configuration file for a service. The service is still running but is not using the new configured values. Which of the following will BEST remediate this issue?