Multiple routing instances (such as virtual routers or VRFs) can be configured on an SRX to provide separation of routing tables. This enables:
Maintaining separation of routing information (Option B): Different departments, tenants, or customers can have their own independent routing domains for security and isolation.
SNMP monitoring (Option A) is unrelated to routing instances.
Routing protocols (Option C) can be run inside each instance, but the purpose of multiple instances is separation, not general routing protocol management.
Simplifying interface configuration (Option D) is not a function of routing instances.
Correct Purpose: To maintain separation of routing information for security purposes.
[Reference: Juniper Networks – Routing Instances and Virtual Routers, Junos OS Security Fundamentals., ]
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