QUESTION: 5

Which two statements are correct about VXLAN domains? (Choose two.)

With Layer 2 traffic, the VLAN ID is discarded before the packet is sent.
With Layer 3 traffic, the VLAN ID is discarded before the packet is sent.
With Layer 2 traffic, the VLAN ID is transmitted within the packet.
With Layer 3 traffic, the VLAN ID is transmitted within the packet.

Answer(s): A,C

Explanation:

In VXLAN domains, when dealing with Layer 2 traffic, the original VLAN ID of the packet can be either transmitted within the VXLAN packet or discarded, depending on the specific implementation and configuration.
When the VLAN ID is preserved, it allows for VLAN transparency, enabling the VXLAN to transport VLAN-tagged frames across the network. On the other hand, discarding the VLAN ID can simplify the encapsulation process but removes the original VLAN information from the packet.

Reference:

Juniper Networks VXLAN Implementation Guide.

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QUESTION: 6

You want to improve network convergence within a data center during link failures. In this scenario, which EVPN-VXLAN feature will accomplish this task?

storm control
Ethernet segment auto discovery
MAC filtering
MAC mass withdrawal

Answer(s): D

Explanation:

The MAC mass withdrawal feature in EVPN-VXLAN environments significantly improves network convergence during link failures.
When a link failure occurs, instead of individually withdrawing each MAC address learned on the failed link, EVPN can send a single, consolidated message indicating that all MAC addresses associated with the Ethernet Segment Identifier (ESI) of the failed link are no longer reachable. This accelerates the convergence process by reducing the amount of control plane traffic needed to update the network state.

Reference:

Juniper Networks EVPN-VXLAN Technical Documentation.

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QUESTION: 7

Which IP fabric underlay protocol provides the highest degree of scalability?

IS-IS
RIP
EBGP
OSPF

Answer(s): C

Explanation:

Among the listed protocols, External Border Gateway Protocol (EBGP) provides the highest degree of scalability for an IP fabric underlay. EBGP is designed for inter-autonomous system routing and thus is well-suited to handle large-scale network environments with robustness and scalability. It is commonly used in data center fabrics due to its ability to efficiently manage routing information and scale with the network as it grows.

Reference:

Juniper Networks Data Center Design - IP Fabric.

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QUESTION: 8

Referring to the exhibit, which two statements are correct? (Choose two.)

The local leaf is using the 192.168.100.102 IP address as the local anchor point of the VTEP tunnel.
The remote leaf is using the 192.168.100.102 IP address as the local anchor point of the VTEP tunnel.
The remote leaf is using the 192.168.100.101 IP address as the local anchor point of the VTEP tunnel.
The local leaf is using the 192.168.100.101 IP address as the local anchor point of the VTEP tunnel.

Answer(s): A,C

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