VXLAN and Network Overlay Concepts Quiz

1. Which of the following best describes VXLAN encapsulation?

Original frame wrapped in UDP/IP tunnel with VXLAN header

Direct Layer 2 frame transmission over MPLS

GRE tunnel with no additional headers

Native Ethernet frame forwarding without modification

2. In VXLAN, which encapsulation method allows traffic to traverse routed networks without modifying underlying infrastructure?

UDP tunneling through the underlay network

Direct Layer 2 frame forwarding

MPLS label switching only

Native VLAN tagging extension

3. VXLAN can operate over Layer 3 networks, requiring only IP connectivity between VTEPs.

True

False

4. Which component in a VXLAN network is responsible for learning and maintaining MAC-to-VTEP mappings?

Control plane (multicast, SDN controller, or BGP EVPN)

Physical switch ASICs only

End-host ARP tables exclusively

DHCP servers alone

5. What does VXLAN tunneling enable in terms of network scalability?

Extension of Layer 2 networks beyond traditional VLAN limits

Reduction of IP address space requirements

Elimination of routing entirely

Replacement of all switching infrastructure

6. In a VXLAN deployment, tenant isolation is primarily achieved through which mechanism?

Separate VNI assignments for each tenant

Physical port separation only

Disabling IP routing protocols

Restricting MAC address tables

7. VXLAN frames include a VXLAN header that contains the VNI and reserved bits.

True

False

8. What is the primary advantage of using an external SDN controller for VXLAN management?

Centralized control and dynamic policy application

Elimination of all network latency

Automatic encryption of all traffic

Replacement of physical switches entirely

9. Which technology can be used alongside VXLAN to distribute MAC address information without relying on multicast?

BGP EVPN (Ethernet VPN)

Spanning Tree Protocol

VLAN tagging only

Static routing protocols

10. How does VXLAN handle the broadcast, unknown unicast, and multicast (BUM) traffic?

Floods to all VTEPs in the same VNI or uses a replication list

Discards all broadcast frames automatically

Routes BUM traffic only over Layer 3 paths

Converts BUM to unicast without encapsulation

11. Which of the following is a limitation of VXLAN when using multicast for control plane?

Multicast may not scale efficiently in large networks

Multicast eliminates the need for VTEPs

Multicast requires all routers to run BGP

Multicast prevents Layer 2 connectivity

12. Network overlays decouple virtual network topology from the underlying physical network infrastructure.

True

False

13. Which control plane mechanism is commonly used to manage VXLAN MAC address learning?

Multicast or an external SDN controller

Static MAC address tables only

Spanning Tree Protocol flooding

IGMP snooping alone

14. In VXLAN, the VTEP (VXLAN Tunnel Endpoint) is responsible for which function?

Encapsulating and decapsulating VXLAN frames

Managing physical switch port configurations

Replacing traditional ARP protocols entirely

Encrypting all Layer 3 traffic automatically

Submit

16. What is the primary purpose of VXLAN in cloud networking?

To extend Layer 2 networks across Layer 3 infrastructure

To replace all IPv4 addresses with IPv6

To eliminate the need for routing protocols

To reduce bandwidth consumption on WAN links

Submit

CloudNetX VXLAN and Network Overlay Concepts Quiz

1. Which of the following best describes VXLAN encapsulation?

2.

What first name or nickname would you like us to use?

2. In VXLAN, which encapsulation method allows traffic to traverse routed networks without modifying underlying infrastructure?

3. VXLAN can operate over Layer 3 networks, requiring only IP connectivity between VTEPs.

4. Which component in a VXLAN network is responsible for learning and maintaining MAC-to-VTEP mappings?

5. What does VXLAN tunneling enable in terms of network scalability?

6. In a VXLAN deployment, tenant isolation is primarily achieved through which mechanism?

7. VXLAN frames include a VXLAN header that contains the VNI and reserved bits.

8. What is the primary advantage of using an external SDN controller for VXLAN management?

9. Which technology can be used alongside VXLAN to distribute MAC address information without relying on multicast?

10. How does VXLAN handle the broadcast, unknown unicast, and multicast (BUM) traffic?

11. Which of the following is a limitation of VXLAN when using multicast for control plane?

12. Network overlays decouple virtual network topology from the underlying physical network infrastructure.

13. Which control plane mechanism is commonly used to manage VXLAN MAC address learning?

14. In VXLAN, the VTEP (VXLAN Tunnel Endpoint) is responsible for which function?

15. A VXLAN Network Identifier (VNI) uses ____ bits to identify unique overlay networks.

16. What is the primary purpose of VXLAN in cloud networking?

17. VXLAN supports a maximum of ____ unique virtual networks through VNI identifiers.

18. In a VXLAN overlay, what term describes the physical network that carries encapsulated traffic?

19. What is the standard UDP destination port used by VXLAN?

20. What is the primary role of the VXLAN header's Reserved field?