Given a Scenario, Describe the Purpose of Equal Cost Multi-Path (ECMP) and High Availability VCAP-VCF-SUPPORT Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   In a scenario where an NSX Tier-0 gateway is configured with ECMP and active-standby HA, what happens if the active edge node fails?

   • AECMP automatically creates a new path to bypass the failed node
   • BThe standby node becomes active, and ECMP continues to distribute traffic across the available paths
   • CAll traffic is dropped until the failed node is manually restarted
   • DThe Tier-0 gateway switches to a single path to avoid further failures
   Reveal Solution Discussion Select an answer first
2. 12foundation · easy

   How does ECMP typically distribute flows across multiple equal-cost next hops?

   • AIt sends each packet to the next hop with the lowest current queue depth
   • BIt selects the next hop with the highest available bandwidth at the time of transmission
   • CIt alternates packets between next hops in a round-robin fashion
   • DIt uses a hash of packet header fields to consistently map each flow to a specific next hop
   Reveal Solution Discussion Select an answer first
4. 13application · medium

   An NSX administrator notices that a single flow between two VMs is consistently using the same edge node in an ECMP configuration, even though multiple equal-cost paths are available. What is the most likely reason for this behavior?

   • AThe edge node is the only one with the required route in its routing table.
   • BECMP uses a hash of the flow's 5-tuple to select a path, so all packets of a flow use the same path.
   • CThe administrator has configured a static route for this specific flow.
   • DThe flow is a TCP connection that requires stateful inspection, so it is pinned to one node.
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   Which HA configuration uses one active node and one or more standby nodes that take over only when the active node fails?

   • AClustered
   • BActive-active
   • CLoad-balanced
   • DActive-standby
   Reveal Solution Discussion Select an answer first
6. 15expert · hard

   A company is migrating a critical application to NSX. The application requires low latency and high availability. They plan to use a Tier-0 gateway with ECMP across two edge nodes and a Tier-1 gateway in active-standby mode. What is the primary benefit of this design?

   • AIt provides both load distribution and failover for the Tier-0 and Tier-1 gateways.
   • BIt ensures that all traffic uses the same edge node for consistency.
   • CIt reduces the number of edge nodes required.
   • DIt eliminates the need for a firewall in the data path.
   Reveal Solution Discussion Select an answer first