300-320 Question #3: Real Exam Question with Answer & Explanation

The correct answer is A: VRF. VRF (Virtual Routing and Forwarding) enables multiple independent routing table instances to coexist simultaneously on a single router, isolating traffic between different networks.

Question

Which technology allows multiple instances of a routing table to coexist on the same router simultaneously?

Options

AVRF
BCisco virtual router
Cinstanced virtual router
DIS-IS

Explanation

VRF (Virtual Routing and Forwarding) enables multiple independent routing table instances to coexist simultaneously on a single router, isolating traffic between different networks.

Common mistakes.

B. Cisco virtual router is not a standard IOS feature or recognized technology name for this function.
C. Instanced virtual router is not a valid Cisco technology or industry-standard term for multiple routing table support.
D. IS-IS is a link-state routing protocol and does not provide the capability to maintain multiple independent routing table instances on one device.

Concept tested. VRF multiple routing table virtualization

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/xe-16/iro-xe-16-book/iro-vrf-lite.html

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