After creating and correctly configuring a custom user monitor, from where do the monitor probes originate by default?

• A. NetScaler IP address
• B. Subnet IP address
• C. Mapped IP address
• D. Virtual IP address

Answer: (A)

When a custom user monitor is created, the probe traffic that checks backend servers is generated by the appliance itself. By default, these monitor probes originate from the NetScaler IP address (the NSIP). This provides a single, consistent source for health checks that network devices and firewalls can expect, simplifying rule configuration and ensuring monitors are recognized as coming from the appliance.

The other IP roles relate to different traffic paths: a Subnet IP is typically used for outbound data-plane traffic to servers in a subnet, a Mapped IP is used for NAT-style translations, and a Virtual IP is the address clients connect to. These are not the default sources for monitor probes.