You Are Attempting to Set Up Monitoring on Servers Running

question 21

Multiple Choice

You are attempting to set up monitoring on servers running Red Hat SELinux 7.1. You are unable to turn off the iptables firewall. After getting a Linux robot up and running, you notice that the controller, spooler, and hdb robot probes all have green ports in infrastructure Manager and the controller and remote hub show no errors. However, you cannot open the controller GUI or contact it through the hub-to-robot connection. Only the connection from the robot to the hub, port 48002, works using Telnet. To address this issue, what do you need to do?

• A) Run the service iptables stop command.
• B) Run the /bin/systemctl stop iptables.service command.
• C) Create the following firewall rule on the local Linux server: ACCEPT tcp - anywhere anywhere state NEW tcp dpt:48000-48100
• D) Run the /etc/init.d/niminit start-persistent command.

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Definitions:

Artificial Pacemaker

An electronic device implanted in the body to regulate the heartbeat by generating electrical impulses.

Vena Cava

One of two large veins that empty into the right atrium of the heart.

Right Atrium

The right upper chamber of the heart that receives deoxygenated blood from the body through the vena cava.

Right Ventricle

One of the four chambers of the heart, responsible for pumping deoxygenated blood to the lungs.