Data Center, Professional (JN0-680) Free Practice Test

Question 1

You are developing an EVPN service between your data centers to enable Layer 2 stretch and Virtual Machine Traffic Optimization (VMTO) operations.
In this scenario, which action must be performed on the IRB interface to accomplish this task?

A. Configure different IP addresses and different MAC addresses on each PE.

B. Configure the same IP address and let the MAC address be dynamically assigned on each PE.

C. Configure the same IP address and the same MAC address on each PE.

D. Configure different IP addresses but the same MAC address on each PE.

Correct Answer: C

Question 2

Referring to the exhibit, R1 and R2 are QFX5100s and are acting as VXLAN Layer 2
Gateways for VLAN 100 using PIM-SM signaling. R2 currently has only the (*.G) state established for VNI 5100.
Which event will cause R2 to establish the (S,G) state for VNI 5100 using R1 as the multicast source?

A. when R2 first learns the MAC address of a locally attached host

B. when R2 receives broadcast, multicast, or unknown unicast from Host A

C. when R2's VNI 5100 configuration is committed

D. when R1 receives a known unicast Ethernet frame from Host A

Correct Answer: B

Question 3

You are deploying a spine-and-leaf IP Fabric in your data center using EBGP.
In this scenario, which three statements are true? (Choose three.)

A. EBGP does not require a next-hop self-policy.

B. Each device should also run an IGP to advertise loopback interfaces.

C. Each device should you use a different autonomous system number.

D. Each leaf must peer to each spine.

E. Each leaf must peer to every other leaf.

Correct Answer: A,C,D

Question 4

The MC-LAG group shown in the exhibit is providing high availability services for the directly connected servers.
Where does Juniper Networks recommend you provide the backup liveness detection?

A. on the ae2 interface

B. on the management interfaces

C. on the ICL-PL connection

D. on the ae1 interface

Correct Answer: B

Question 5

Referring to the VCF shown in the exhibit, what is the remote destination trunk weight for the SW-4, SW-1, SW-5 path?

A. 10/40

B. 30/40

C. 20/40

D. 40/40

Correct Answer: C

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Question 6

You are deploying MC-LAG as shown in the exhibit.
Which statement is correct when using active/active mode?

A. Only ICCP control traffic is allowed through the ICL-PL connection

B. VCCP is used to exchange MAC addresses between MC-LAG peers.

C. VRRP must be used to ensure MAC addresses are shared between peers.

D. ICCP and block filters are used to avoid Layer 2 loops.

Correct Answer: D

Question 7

Which statement is correct about EVPN Type 2 routers?

A. An EVPN Type 2 route allows data plane-based host MAC learning.

B. An EVPN Type 2 route provides local proxy-arp for remote hosts.

C. An EVPN Type 2 route disables MAC flowing to remote hosts.

D. An EVPN Type 2 route prevents the need to advertise host IP reachability.

Correct Answer: A

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Juniper Data Center, Professional (JN0-680) Free Practice Test