Data Center, Professional (JNCIP-DC) v1.0
Question 1
You want to ensure that VXLAN traffic from the xe-0/0/12 interface is being encapsulated by logical vtep.32770 and sent to a remote leaf device.
In this scenario, which command would you use to verify that traffic is flowing?
- A. monitor traffic interface xe-0/0/12
- B. show interfaces vtep.32770 detail
- C. show interface terse vtep.32770
- D. show interfaces terse vtep.32770 statistics
Answer : D
Question 2
You are asked to build out the VXLAN control plane.
In this scenario, which two protocols provide this capability? (Choose two.)
- A. MBGP
- B. PIM-SM
- C. OSPF
- D. IS-IS
Answer : AD
Question 3
Click the Exhibit button.
Connections between hosts connected to Leaf-1 and Leaf-2 are not working correctly.
Referring to the exhibit, which two configuration changes are required to solve the problem? (Choose two.)
- A. Configure the set switch-options vrf-target target:65000:1 parameter on Leaf-2.
- B. Configure the set switch-options service-id 1 parameter on Leaf-2.
- C. Configure the set switch-options vtep-source-interface irb.0 parameter on Leaf-1.
- D. Configure the set switch-options route-distinguisher 192.168.100.50:1 parameter on Leaf-1.
Answer : AB
Question 4
Click the Exhibit button.
A VXLAN tunnel has been created between leaf1 and leaf2 in your data center.
Referring to the exhibit, which statement is correct?
- A. Traffic sent from server1 to server2 will be dropped on leaf2.
- B. Traffic sent from server1 to server2 will be dropped on leaf1.
- C. Traffic sent from server1 to server2 will be tagged with VLAN ID 200 on leaf2 and forwarded to server2.
- D. Traffic sent from server1 to server2 will be tagged with VLAN ID 100 on leaf2 and forwarded to server2.
Answer : A
Question 5
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
- A. The MAC address is unknown and not in the forwarding table of the remote VTEP.
- B. The remote VTEP is not responding.
- C. VNI 100 is not configured on the remote VTEP.
- D. The MAC address is known but not reachable by the remote vtep.
Answer : A
Question 6
Click the Exhibit button.
Host A is connected to vlan 100 on leaf1. Host B is connected to vlan 200 on leaf1. Host A and Host B are unable to communicate. You have reviewed the routing and your hosts have the correct default route (1).
Referring to the exhibit, which two commands will solve this problem? (Choose two.)
- A. delete vlans vn200 13-interface irb.200
- B. set routing-options static route 0.00.0/0 next-hop 192.168.200.10
- C. set interface irb unit 100 family inet address 192.168.100.1
- D. set vlans vn100 13-interface irb.100
Answer : CD
Question 7
What are two supported methods for exporting data when using the Junos telemetry interface? (Choose two.)
- A. using SNMP
- B. using gRPC
- C. using UDP
- D. using REST
Answer : BD
Question 8
Which statement is correct about a collapsed fabric EVPN-VXLAN architecture?
- A. Fully meshed back-to-back links are needed between the spine devices.
- B. Border gateway functions occur on border leaf devices.
- C. It supports multiple vendors in the fabric as long as all the spine devices are Juniper devices deployed with L2 VTEPs.
- D. Using Virtual Chassis at the leaf layer increases resiliency.
Answer : B
Question 9
Which parameter is used to associate a received route with a local VPN route table?
- A. route-distinguisher
- B. VLAN ID
- C. route-target community
- D. VNI
Answer : C
Question 10
Click the Exhibit button.
The exhibit shows the truncated output of the show evpn database command.
Given this output, which two statements are correct about the host with MAC address 40:00:dc:01:00:04? (Choose two.)
- A. The host is originating from an ESI LAG.
- B. The host is located on VNI 10002.
- C. The host is assigned IP address 10.4.4.5.
- D. The host is originating from irb.300.
Answer : BC
Question 11
You are setting up an EVPN-VXLAN architecture for your new data center. Its initial deployment will be less than 50 switches; however, it could scale up to 250 switches over time supporting 1024 VLANs. You are still deciding whether to use symmetric or asymmetric routing.
In this scenario, which two statements are correct? (Choose two.)
- A. Asymmetric routing routes traffic on the egress switch.
- B. Symmetric routing supports higher scaling numbers.
- C. Asymmetric routing is easier to monitor because of the transit VNI.
- D. Symmetric routing needs an extra VLAN with an IRB interface for each L3 VRF instance.
Answer : BD
Question 12
Click the Exhibit button.
Referring to the exhibit, when Host A sends an ARP request for Host B’s IP address, which Junos feature does leaf1 require to send an ARP response back to Host A without having to send a broadcast frame over the fabric?
- A. proxy ARP
- B. GARP
- C. DAD
- D. proxy NDP
Answer : A
Question 13
Click the Exhibit button.
Given the configuration shown in the exhibit, why has the next hop remained the same for the EVPN routes advertised to the peer 203.0.113.2?
- A. The export policy is incorrectly configured.
- B. The vpn-apply-export parameter must be applied to this peer.
- C. EVPN routes cannot have the next hop changed.
- D. The vrf-export parameter must be applied.
Answer : B
Question 14
Why is a designated forwarder required in a multihomed CE-to-PE VXLAN environment using EVPN signaling?
- A. The designated forwarder is required to prevent duplicate packets from being received on multihomed hosts.
- B. The designated forwarder is required to prevent flooding of MAC addresses to multihomed hosts.
- C. The designated forwarder is required to prevent a traffic storm from being received on multihomed hosts.
- D. The designated forwarder is required to prevent packets from looping between the PEs.
Answer : A
Question 15
You are asked to build redundant gateways in your EVPN-VXLAN environment, but you must conserve address space because these gateways must span across seven PEs.
What should you implement on the PEs to satisfy these requirements?
- A. Use IRB interfaces with the same IP and MAC address.
- B. Use IRB interfaces with the same IP address and different MAC addresses.
- C. Use IRB interfaces with different IP addresses and the same VGA.
- D. Use IRB interfaces with the same IP and VGA.
Answer : B