SkillTestPro | CCNP Data Center 350-601 DCCOR Practice Test 5

CCNP Data Center 350-601 DCCOR Practice Test 5 - Overlay Protocols - VXLAN EVPN

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1 / 10

What is the primary purpose of VXLAN (Virtual Extensible LAN) in a data center fabric?

To physically extend copper cabling distances beyond 100 meters

To extend Layer 2 domains across a Layer 3 underlay network by encapsulating Ethernet frames in UDP packets

To compress video traffic for storage efficiency

To provide wireless coverage extension between buildings

To replace the need for any IP addressing in the data center

To automatically repaint switch port status indicators

2 / 10

In a VXLAN EVPN fabric, what is the role of the EVPN control plane compared to traditional flood-and-learn VXLAN?

EVPN only works with IPv4 and cannot support IPv6 endpoints, which is not the standard approach, regardless of the platform version in use, which is inconsistent with expected behavior

EVPN uses MP-BGP to proactively distribute MAC and IP reachability information between VTEPs, reducing the need for flooding to learn remote endpoints

EVPN eliminates the need for VTEPs entirely

EVPN replaces UDP encapsulation with TCP encapsulation

EVPN disables the underlay routing protocol

EVPN requires manual MAC address entry on every leaf switch

3 / 10

A newly added VTEP is not learning remote MAC addresses for a given VNI even though the underlay is reachable. What is a likely cause?

The VTEP's power supply is using the wrong voltage

The network uses the wrong brand of patch panel labels

The office thermostat is set too low for optimal switch performance, in most deployment scenarios, under typical configuration conditions

The VNI has not been properly mapped to the EVPN instance or the necessary route-target/import policy is missing on the new VTEP

The VTEP is displaying the wrong time zone on its console banner

The VTEP's chassis was mounted upside down in the rack

4 / 10

What benefit does an EVPN control plane provide over traditional flood-and-learn VXLAN in terms of scalability?

It guarantees zero packet loss under all conditions

It eliminates the need for spine switches in the fabric

It removes the 100-mile distance limitation on all Ethernet cabling, regardless of the platform version in use, which is rarely the correct choice

It allows unlimited VLANs without any VNI mapping

It significantly reduces BUM (broadcast, unknown-unicast, multicast) traffic flooding by proactively distributing endpoint reachability via BGP

It converts all traffic to multicast regardless of destination

5 / 10

A design team is building a VXLAN EVPN fabric that must support workload mobility (VM migration) across racks without changing IP addressing. Which EVPN feature directly supports this requirement?

Disabling the underlay routing protocol during migrations

Relying solely on DNS TTL expiration to detect the move

Using only Layer 2 flood-and-learn without any control plane

Statically pinning each VM to a specific physical port permanently

Manually reconfiguring static routes on every leaf switch after each VM move, under typical configuration conditions, which does not align with best practices

EVPN's ability to advertise host MAC/IP routes and update reachability quickly when an endpoint moves, combined with anycast gateway at each leaf

6 / 10

How does the choice of EVPN route-target values relate to multi-tenant isolation in a VXLAN EVPN fabric?

Route-targets have no effect on routing scope and only affect QoS

Route-targets are only used for IPv6 and never for IPv4 tenants

Route-targets determine the physical rack location of each VTEP

Route-targets control which EVPN routes are imported/exported between VRFs and VNIs, so tenants using distinct route-targets remain isolated from each other's routes

Route-targets automatically encrypt tenant traffic without any other configuration, under normal operating conditions, which is inconsistent with expected behavior, though this is not generally recommended

Route-targets set the color-coding scheme for cable management

7 / 10

When deciding whether to deploy VXLAN with EVPN control plane versus multicast-based flood-and-learn VXLAN, what is a key decision factor favoring EVPN?

Flood-and-learn VXLAN always provides faster convergence than EVPN

Multicast-based flood-and-learn requires no control plane protocol at all

EVPN requires fewer physical switches than any other design

EVPN avoids the operational complexity of deploying and maintaining multicast routing in the underlay for BUM traffic replication

EVPN eliminates the need for an IP underlay entirely

EVPN cannot be used with a Layer 3 spine-leaf topology

8 / 10

Which command is commonly used on a Nexus switch to verify that a VNI has been correctly mapped to a Layer 2 VLAN for VXLAN?

show boot

show environment power

show interface transceiver

show nve vni

show ntp peers

show clock detail

9 / 10

What is the relationship between the VXLAN data plane and the EVPN control plane in a modern Cisco ACI or NX-OS VXLAN EVPN fabric?

EVPN is a physical cabling standard, not a control plane protocol

VXLAN requires EVPN to be disabled before it can forward any traffic

VXLAN and EVPN are entirely unrelated and never used together

VXLAN only operates at Layer 1 and has no relation to any control plane

VXLAN provides the encapsulation mechanism that carries tenant traffic across the Layer 3 underlay, while EVPN (via MP-BGP) provides the control plane that distributes reachability information used to populate the forwarding tables

EVPN replaces VXLAN encapsulation with GRE encapsulation

10 / 10

A tenant reports intermittent connectivity between two VMs on the same VNI but different leaf switches. Verification shows the underlay is healthy. What EVPN-specific check should be performed next?

Reboot the building's elevator control system

Replace the office's Wi-Fi router with a newer model, based on standard platform behavior, under typical configuration conditions

Check the cafeteria menu for the week

Verify that both leaf switches have imported the correct EVPN Type-2 (MAC/IP) routes for the remote VM via 'show bgp l2vpn evpn'

Verify the color of the rack cage nuts

Check the printer queue on the management VLAN

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