Juniper JN0-680 Exam Questions

Question 6 of 64

Referring to the exhibit, each leaf node is a QFX5100 acting as a VXLAN Layer 2 Gateway using EVPN signaling. Leaf 2 and Leaf 3 are both attached to the same
EVPN Ethernet segment. Leaf 2 has been elected the designated forwarder for VLAN 200 on that Ethernet segment.
In this scenario, which two actions will Leaf 1 perform with the broadcast Ethernet frame received from Host A? (Choose two.)

Leaf 1 will strip the VLAN tag from the Ethernet frame before encapsulating it in VXLAN.

Leaf 1 will send a VXLAN encapsulated copy of the Ethernet frame to both Leaf 2 and Leaf 3.

Leaf 1 will change the VLAN tag of the Ethernet frame to 200 before encapsulating it in VXLAN.

Leaf 1 will send a VXLAN encapsulated copy of the Ethernet frame to Leaf 2 only.

Correct Answer: A, D

Question 7 of 64

You have built a mixed-mode VCF consisting of two QFX5100-24Qs as spines, two QFX5100-48S as leaf nodes, and one EX4300 as a leaf node. The VCF is working for all devices, except the EX4300 40GbE fabric links will not join the VCF.
In this scenario, what must be corrected to solve the connectivity problem?

Reboot all of the VCF members.

Power off all of the VCF members and power up the spines before powering up the leafs.

Zeroize the EX4300, cleat all the tables with the clear ethernet-switching tables command on all members, and reissue the request virtual- command. chassis mixed-mode

Turn off authonegotiation on the EX4300 and the attached spine interfaces, and then use the request virtual-chassis vc-port set command on the spine ports connected to the EX4300.

Correct Answer: A

Question 8 of 64

Your server administrator asks you to preserve the inner VLAN tags of the frames coming from a Layer 2 VXLAN Gateway of the EVPN-enabled segment.
Which two parameters must you add to the configuration to allow the VLAN tag to be passed? (Choose two.)

layer2-protocol-tunneling

decapsulate-accept-inner-vlan

dotlq-tunneling

encapsulate-inner-vlan

Correct Answer: B, D

Question 9 of 64

Which two statements are correct when performing a unified ISSU? (Choose two.)

The master Routing Engine and backup Routing Engine must be running the same software version before you can perform a unified ISSU.

Unicast RPF-related statistics are not saved across a unified ISSU, and the unicast RPF counters are reset to zero during a unified ISSU.

Unicast RPF-related statistics are saved across a unified ISSU, and the unicast RPF counters are not reset to zero during a unified ISSU.

The backup Routing Engine must be running the most recent software version before you can perform a unified ISSU.

Correct Answer: A, B

Question 10 of 64

Referring to the exhibit, PE1 and PE2 are acting as MPLS Layer 3 VPN PEs to provide the DCI between DC1 and DC2, which are IP Fabrics. Leaf 1 and Leaf 2 are QFX5100 Series devices acting as VXLAN Layer 2 Gateways using EVPN signaling for the same VXLAN segment.
Which statement is correct about the Edge1 device in this scenario?

Edge1 must be configured for MP-BGP using EVPN signaling.

Edge1 must be configured for MP-BGP using L3VPN signaling.

Edge1 must be configured for BGP labeled unicast on its PE1-facing interface.

Edge1’s routing table must contain an IP route to both Leaf1 and Leaf2.

Correct Answer: A