JNCIP-DC

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Question 1:

Referring to the exhibit, not all routes are being exchanged by EBGP peers.

In this scenario, which BGP parameter would solve this problem?

A. multihop

B. multipath

C. multipath multiple-as

D. as-override

Correct Answer: D


Question 2:

You are designing a network for a small data center.

In this scenario, which underlay protocol allows for the simplest implementation?

A. OSPF

B. IBGP

C. EBGP

D. MPLS

Correct Answer: C


Question 3:

You are designing a Layer 3 fabric underlay using EBGP. You will implement an EVPN-signaled VXLAN overlay on the Layer 3 fabric.

In this scenario, what must you do in the underlay to ensure that the VXLAN overlay will be able to function properly?

A. The underlay should advertise the host-connected interfaces on all leaf devices.

B. Each device in the underlay should advertise its loopback address.

C. The underlay should be configured with a separate VRF for each potential tenant.

D. The underlay should support the PIM protocol.

Correct Answer: B


Question 4:

You are configuring VXLAN, and you must ensure that all switches for the multicast groups advertise their existence and learn about other VTEPs.

In this scenario, which protocol will accomplish this task?

A. OSPF

B. BGP

C. EVPN

D. PIM

Correct Answer: C


Question 5:

Which statement is true about a Data Center Interconnect over an IP network?

A. Layer 2 data must traverse a point-to-point link.

B. Layer 2 data must traverse an MPLS LSP.

C. Layer 2 data must be encapsulated.

D. Layer 3 data must be encapsulated.

Correct Answer: B


Question 6:

You work in a data center where VMs and hosts are frequently moved. Your design needs to eliminate inefficient traffic flows.

In this scenario, which two solutions will satisfy this requirement? (Choose two.)

A. VXLAN

B. EVPN

C. VMTO

D. VPLS

Correct Answer: AB


Question 7:

A client with five data centers spread around the country uses MPLS L2VPNs to provide point-to-point data center Interconnects between each data center in a full-mesh network. The client is considering an MPLS EVPN implementation.

In this scenario, what are three advantages of using MPLS EVPN interconnects? (Choose three.)

A. They provide for static configuration that does not require a Dynamic Routing Protocol.

B. They provide for lower transmission latency.

C. They provide for a local proxy ARP/ND resolution.

D. They provide for point-to-multipoint connectivity.

E. They provide for MAC learning in the control plane.

Correct Answer: CDE


Question 8:

You are configuring an EVPN overlay network. You want to ensure that leaf devices can respond to ARP requests from locally connected hosts, when the leaf device knows the MAC of the intended destination.

In this scenario, what should you configure on the leaf devices to accomplish this task?

A. proxy ARP

B. static ARP entries

C. persistent MAC learning

D. IGMP snooping

Correct Answer: A


Question 9:

After configuring an IP fabric using EBGP as your routing protocol, you notice that not all of the routes are showing up in the routing tables. You have verified that all adjacencies have formed, and that all policies are in place and configured properly.

In this scenario, which statement is true?

A. The routers have not been configured with the multipath multiple-as parameter.

B. The routers have not been configured using the add-path parameter.

C. The routers have not been configured using the bfd-liveness-detection parameter.

D. The routers have not been configured using the multihop parameter.

Correct Answer: D


Question 10:

Referring to the exhibit, DC1 and DC2 have a DCI across a service provider WAN connection. Host1 in DC1 must have Layer 2 connectivity to host2 in DC2. A VXLAN tunnel must be created between VTEP1 and VTEP2.

In this scenario, which statement is true?

A. The service provider WAN connection cannot be an MPLS-based WAN connection.

B. VXLAN Layer 3 gateway must be provisioned at the Super Spine layer.

C. A route to the loopback address on VTEP2 must be present on VTEP1.

D. VTEP1 and VTEP2 must peer using IBGP.

Correct Answer: C


Question 11:

Host1 and host2 are connected to an EVPN signaled VXLAN overlay, and must have Layer 3 connectivity. The VNI and VLAN assignments are shown in the exhibit.

In this scenario, which two statements are true? (Choose two.)

A. The ESI assigned to the host1 link will be different from the ESI assigned to the host2 link.

B. The VNI assigned to the host1 link must be the same as the VNI assigned to the host2 link.

C. A Layer 3 gateway can be configured on the spine devices.

D. A Layer 3 gateway can be configured on the leaf devices.

Correct Answer: CD


Question 12:

What are three functions supported by the Contrail Command user interface? (Choose three.)

A. enabling VM-to-BMS bridging

B. onboarding of an IP Fabric

C. configuring management domains

D. integrated syslog collector

E. creating virtual networks

Correct Answer: CDE


Question 13:

Referring to the exhibit, Host 1 and Host 3 have exchanged traffic.

`

In this scenario, which statement is true?

A. Leaf 2 does not learn Host 1\’s MAC address until Host 1 and Host 2 send traffic to each other.

B. Leaf 2 learns Host 1\’s MAC address through periodic updates from Spine 2.

C. Leaf 2 learns Host 1\’s MAC address when Host 3 learns Host 1\’s MAC address.

D. Leaf 2 learns Host 1\’s MAC address when Leaf 1 queries Host 1.

Correct Answer: D


Question 14:

You want to configure redundant Layer 3 gateways.

In this scenario, which two Juniper best practices would accomplish this task? (Choose two.)

A. configuring both IRB interfaces manually with the same MAC address.

B. allowing Junos to dynamically create the virtual IP address of the IRB interface.

C. configuring both IRB interfaces manually with the same IP address.

D. allowing Junos to dynamically create the virtual MAC address of the IRB interface.

Correct Answer: CD


Question 15:

Referring to the VTEP output shown in the exhibit, which two statements are true? (Choose two.)

A. The MAC address 52:54:00:2c:4b:a2 belongs to a local host.

B. The MAC address 52:54:00:5e:88:6a belongs to a remote host.

C. The MAC address 52:54:00:2c:4b:a2 belongs to a remote host.

D. The MAC address.52:54:00:5e:88:6a belongs to a local host.

Correct Answer: BC


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