Data Center, Professional (JNCIP-DC) v1.0
Question 1
You must integrate several leaf nodes that do not support the EVPN-VXLAN architecture into your existing EVPN-VXLAN-based IP fabric.
In this scenario, which two design considerations would accomplish this task? (Choose two.)
- A. Ethernet segment identifier
- B. edge-routed bridging
- C. generic routing encapsulation
- D. collapsed fabric
Answer : BD
Question 2
Click the Exhibit button.
The 192.168.0.0/24 route is being advertised into your IP fabric by the leaf device in AS 65512. Both spine devices receive and advertise the route to all other leaf devices. You must ensure that traffic destined to this network is load-balanced between spine devices.
In this scenario, which two statements are correct? (Choose two.)
- A. You should enable the multipath multiple-as parameters under the appropriate BGP group on the spine devices.
- B. You should create and apply a load-balancing policy to the forwarding table on the leaf devices.
- C. You should create and apply a load-balancing policy to the forwarding table on the spine devices.
- D. You should enable the multipath multiple-as parameters under the appropriate BGP group on the leaf devices.
Answer : BD
Question 3
Click the Exhibit button.
Referring to the exhibit, you have configured the underlay and overlay for an IP fabric. The underlay sessions are established without problems, but the overlay sessions remain in the active state.
What should you do to solve this problem?
- A. Add a policy to the underlay group that exports the local device’s loopback address into the underlay fabric.
- B. Change the underlay group to an internal BGP group.
- C. Add a policy to the overlay group that exports the local device’s loopback address into the underlay fabric.
- D. Change the overlay group to an external BGP group.
Answer : A
Question 4
Click the Exhibit button.
Referring to the exhibit, Host1 (10.1.1.1) if failing to communicate with Host2 (10.1.2.1) in a data center that uses an ERB architecture.
What do you determine from the output?
- A. Host1 and Host2 are directly connected to leaf1.
- B. The irb.20 interface is not configured on leaf1.
- C. The traffic is failing because load balancing is not configured correctly.
- D. The traffic is entering the VXLAN tunnel.
Answer : D
Question 5
You are using a single tenant data center with a bridged overlay architecture.
In this scenario, how do hosts of the different virtual networks communicate with each other?
- A. using anycast gateway addresses configured on the leaf devices
- B. using EVPN Type 5 routes
- C. off-fabric using an external device
- D. using virtual gateway addresses configured on the spine
Answer : C
Question 6
What are two ways in which an EVPN-signaled VXLAN is different from a multicast-signaled VXLAN? (Choose two.)
- A. An EVPN-signaled VXLAN is less resource intensive.
- B. An EVPN-signaled VXLAN can perform autodiscovery of VTEPs using IS-IS.
- C. An EVPN-signaled VXLAN can perform autodiscovery of VTEPs using BGP.
- D. An EVPN-signaled VXLAN features slower and more complete convergence.
Answer : CD
Question 7
Click the Exhibit button.
You are deploying a VXLAN overlay with EVPN as the control plane in an ERB architecture.
Referring to the exhibit, which three statements are correct about where then VXLAN gateways will be placed? (Choose three.)
- A. Spine devices will have no VXLAN gateways.
- B. All leaf devices will have L3 VXLAN gateways.
- C. Only the spine devices will have L2 VXLAN gateways.
- D. Only the border and leaf devices will have L3 VXLAN gateways.
- E. All leaf devices will have L2 VXLAN gateways.
Answer : ADE
Question 8
You are asked to implement VXLAN group-based policies (GBPs) in your data center.
Which two statements are correct in this scenario? (Choose two.)
- A. VXLAN GBP ensures consistent application of BGP groups throughout the network.
- B. VXLAN GBP ensures consistent application of security group policies throughout the network.
- C. VXLAN GBP uses scalable group tags that must be configured statically on each switch and activated through 802.1X.
- D. VXLAN GBP uses scalable group tags that may be configured on a RADIUS server and pushed to the switch through 802.1X.
Answer : BD
Question 9
You are asked to configure telemetry on the QFX Series devices in your data center fabric. You want to use sensors that have a vendor-neutral data model.
Which type of sensor should you use in this scenario?
- A. JTI native sensors
- B. JTI OpenConfig sensors
- C. Python sensors
- D. analog sensors
Answer : B
Question 10
Click the Exhibit button.
You have implemented an EVPN-VXLAN data center. Device server1 must be able to communicate with device server2.
Referring to the exhibit, which two statements are correct? (Choose two.)
- A. Traffic from server1 to server2 will transit a VXLAN tunnel to spine1 or spine2, then a VXLAN tunnel from spine1 or spine2 to leaf2.
- B. Traffic from server1 to server2 will transit the VXLAN tunnel between leaf1 and leaf2.
- C. An IRB interface must be configured on leaf1 and leaf2.
- D. An IRB interface must be configured on spine1 and spine2.
Answer : AC
Question 11
A local VTEP has two ECMP paths to a remote VTEP.
Which two statements are correct when load balancing is enabled in this scenario? (Choose two.)
- A. The inner packet fields are not used in the hash load balancing.
- B. The destination port in the UDP header is used to load balance VXLAN traffic.
- C. The source port in the UDP header is used to load balance VXLAN traffic.
- D. The inner packet fields are used in the hash for load balancing.
Answer : CD
Question 12
Which three statements are correct about VXLAN control planes? (Choose three.)
- A. EVPN is inefficient and does not scale well.
- B. EVPN enables fast convergence and updates.
- C. Multicast is not agile and requires manual VNI mapping.
- D. Multicast does not require as many resources.
- E. Both multicast and EVPN can facilitate MAC learning.
Answer : BDE
Question 13
You are implementing VXLAN broadcast domains in your data center environment.
Which two statements are correct in this scenario? (Choose two.)
- A. The VNI is a 16-bit value and can range from 0 through 16,777,215.
- B. Layer 2 frames are encapsulated by the source VTEP.
- C. A VXLAN packet does not contain a VLAN ID.
- D. The VNI must match the VLAN tag to ensure that the remote VTEP can decapsulate VXLAN packets.
Answer : BC
Question 14
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 15
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