2.2 Configure and Verify Data Path Virtualization Technologies 350-401 Practice Questions (Page 6)

Questions 26–30

1. 26foundation · easy

   Which statement accurately describes how a VRF instance affects routing on a Cisco router?

   • AA VRF instance automatically shares its routing table with all other VRFs on the device.
   • BA VRF instance creates a separate routing table that is used only by interfaces explicitly assigned to that VRF.
   • CA VRF instance only affects the forwarding of multicast traffic, not unicast routing.
   • DA VRF instance replaces the global routing table and becomes the only routing table on the device.
   Reveal Solution Discussion Select an answer first
2. 27application · medium

   A GRE tunnel is configured between two routers. The tunnel interface is up/up, but you cannot ping the remote tunnel endpoint. What is the most likely cause?

   • AThe tunnel source or destination is unreachable in the global routing table.
   • BThe tunnel interface is not assigned an IP address.
   • CThe tunnel is not in a VRF.
   • DThe tunnel mode is incorrect.
   Reveal Solution Discussion Select an answer first
4. 28foundation · easy

   What is the primary purpose of a Virtual Routing and Forwarding (VRF) instance on a Cisco IOS XE device?

   • ATo create a virtual switch that forwards frames based on MAC addresses and separates broadcast domains.
   • BTo provide a separate routing table and forwarding table for each configured VRF, allowing overlapping IP addresses and independent routing decisions on the same device.
   • CTo encrypt traffic between two sites using IPsec and provide a secure tunnel over an untrusted network.
   • DTo provide a single routing table for all interfaces, simplifying the routing configuration on a device.
   Reveal Solution Discussion Select an answer first
5. 29expert · hard

   A router has two VRFs, 'A' and 'B', with overlapping subnets. You need to allow selective communication between the VRFs for a specific service, but keep other traffic isolated. Which approach is the most appropriate?

   • AUse a single VRF and rely on ACLs to restrict traffic.
   • BConfigure a GRE tunnel between the VRFs.
   • CConfigure route leaking between the VRFs for the specific service's subnet.
   • DUse policy-based routing to redirect traffic between VRFs.
   Reveal Solution Discussion Select an answer first
6. 30foundation · easy

   You have two VRFs, RED and BLUE, on a router. A host in VRF RED cannot ping a host in VRF BLUE. What is the most likely reason?

   • AVRFs are isolated by default, so routing between them requires explicit route leaking or inter-VRF routing.
   • BThe hosts are using different IP subnets, which always prevents communication.
   • CThe hosts are in different VLANs, which prevents communication.
   • DThe router does not have enough memory to support two VRFs.
   Reveal Solution Discussion Select an answer first