True. Recursion is disabled by default in F5 GTM System for security reasons. Enabling recursion can potentially lead to DNS amplification attacks and other security vulnerabilities, so it is recommended to keep it disabled unless specifically required for certain configurations.
Domain
DNS Data flow

The DNS database is distributed over a vast number of servers globally known as "Name Servers." These servers store information about domain names and their corresponding IP addresses, allowing for efficient and reliable domain name resolution.

The correct command to list the configuration for a monitor in F5 GTM is 'tmsh list /gtm monitor '. This command specifies the monitor type and name to retrieve the specific configuration details for that monitor, allowing administrators to view and verify the monitor settings.
Domain
Health Monitor

The correct choice is iQuery, as it is the designated protocol for facilitating communication between agents within the BIG-IP Systems. This protocol ensures seamless interaction and data sharing among the various components of the system.
SMTP
Explanation:
SMTP is not the correct choice for the protocol that manages communication between agents inside the BIG-IP Systems. SMTP is primarily used for email transmission and does not serve the purpose of internal communication within the BIG-IP Systems.
iQuery is the correct choice as it is the protocol used for communication between agents inside the BIG-IP Systems. It allows for the exchange of information and coordination between different components within the system.
Domain
iQuery

The last part of the FQDN "WWW" will be resolved by the second-level domain "F5.com" in the domain name system hierarchy. The second-level domain is the part of the domain name that comes before the top-level domain, and it is responsible for resolving specific subdomains like "WWW" within the domain.