EMT Practice Test

1. Question Content...

---

Question1: Referring to the exhibit,

what effect does EVPN core isolation have?

Question2: Which protocol replicates forwarding information between MC-LAG peers?

Question3: Which two statements about the seamless EVPN-VXLAN stitching data center interconnect architecture are correct? (Choose two.)

Question4: Referring to the exhibit, which statement is correct?

Question5: Which event triggers the generation of a EVPN type-4 route?

Question6: Which two statements are true about VRF routing instances? (Choose two.)

Question7: You are designing a network for a small data center. In this scenario, which underlay protocol allows for the simplest implementation?

Question8: Referring to the exhibit, you have a data center with two PODs. Seamless EVPN-VXLAN stitching is used to facilitate communication between the PODs.

Which three statements are true in this scenario? (Choose three.)

Question9: You are asked to manage the oversubscription ratio of your spine and leaf IP fabric. You determine that you are at a 3:1 ratio of downstream to upstream traffic and must achieve a 1.1ratio. In this scenario, which two actions would you take to achieve this goal? (Choose two.)

Question10: Which two statements describe EVPN based VXLAN implementations? (Choose two.)

Question11: You are asked to deploy an Ethernet bridging design in a data center with the following criteria:
- routing must occur on the leaf devices.
- VTEPs must terminate on the leaf devices.
- facilitate inter-VLAN communication.
- lower latency with East-West traffic.
Which architecture should you use in this scenario?

Question12: You are asked to enable visibility into your EVPN-VXLAN network traffic by monitoring traffi continuously. Which two statements are correct in this scenario? (Choose two.)

Question13: You administer an EVPN-VXLAN fabric. You notice that there is no VXLAN traffic forwarding through the network.


Referring to the exhibit, which modification will solve the problem?

Question14: Which two statements describe a VXLAN network identifier (VNI)? (Choose Two)

Question15: You are deploying a VXLAN using signaling overlay network in your new data center. You are able to establish your MP BGP peering session and see your EVPN routes, but traffic will not traverse the VXLAN using signaling overlay network.
What is a solution to this problem?

Question16: You have a site with thousands of MAC addresses multihomed to two leaf nodes in an EVPN VXLAN. In this scenario, which EVPN feature provides fast network convergence in the event of a leaf node link failure?

Question17: You are implementing perimeter security for your data center. You need to inspect all traffic Layer 7 and ensure the failure of a port or device will not result in an interruption to traffic flows. In this scenario, which design would satisfy these requirements?

Question18: You choose the EBGP design shown in the exhibit as your IP fabric design. You must ensure that both routes received by the spine nodes will be used for ECMP forwarding.

Which BGP parameter would need to be added to the EBGP configuration of the spine nodes to achieve this goal?

Question19: Your manager asks you to secure ARP and DHCP traffic across your local Ethernet links In this scenario, which technology will accomplish this task?

Question20: You are attempting to configure filter-based forwarding in your data center. All traffic from Host1 that is going to Host2 should be inspected by the data center firewall. You have verified that the traffic is being forwarded from router leaf L1's VRF-1 to its INSPECT-VRF. However, the traffic is not reaching service L2.

Referring to the exhibit, which two steps should you take to troubleshoot the problem? (choose two.)

Question21: You have successfully deployed an IP fabric in your data center. However, your server team complains that they are not seeing an increase in performance as expected. After examining the routing and forwarding tables, you notice that only a single route is listed to each destination in the forwarding table, even though there are multiple routes shown in the routing table.
In this scenario, what should you do to solve the problem?

Question22: Which EVPN router type prevents BUM traffic from looping back to a multihued host?

Question23: You are logged in to Leaf 1. When examining the routing table, you notice that you have no routes from Leaf 2.

Referring to the exhibit, which two commands would you use to troubleshoot the problem? (Choose two.)

Question24: Which two characteristics would you consider when selecting spine devices in an IP fabric?
(Choose two.)

Question25: What are two types of EVPN routes? (Choose two.)

Question26: An EVPN-signaled VXLAN overlay has been deployed in the network shown in the exhibit. Host1 is a bare metal server, and is dual-homed to the network. The IP addresses 10.1.1.1/24 and 10.1.1.2/24 are assigned to the same physical NIC, and no virtualization is configured on the server.

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

Question27: Which two combinations are supported when configuring a Virtual Chassis Fabric? (Choose two.)

Question28: Which statement is true about a Data center interconnect over an IP network?

Question29: Referring to the exhibit, you want to advertise the IRB routes between both routing instances.


Which two configuration parameters would be applied to accomplish this task? (Choose two.)

Question30: A VTEP requires which two interfaces? (Choose two.)

Question31: You need to add perimeter security to the network shown in the exhibit. All traffic must be inspected for attacks. The edge routers are using all available ports. Your solution must maintain both port and device resiliency.

In this scenario, which design would satisfy these requirements?

Question32: What is the purpose of the command shown in the exhibit?

Question33: You are implementing a second data center and must have some of your VLANs active in both data centers. You must provide high availability, fast reconvergence, and avoid tromboning traffic on these VLANs.
In an over-the-top DCI strategy, which two statements are correct? (Choose two.)

Question34: Which device provides microsegmentation in a data center network?

Question35: Which two statements about the seamless EVPN-VXLAN stitching interconnect gateways are correct? (Choose two.)

Question36: Which protocol replicates forwarding information between MC-LAG peers?

Question37: Referring to the VTEP output shown in the exhibit, which two statements are true? (Choose two.)

Question38: You manage a data center with a 5-stage EVPN-VXLAN IP fabric. You notice that there are suboptimal paths used between the leaf and spine as well as the spine and super spine. What is one way to solve this issue?

Question39: A company wants to expect their hosting business and is seeking solutions to supported multiple tenants. Each tenant should be able to configure their own logical interfaces. Also, based on customer needs, all routing features must be supported.
What will satisfy the customer's requirements?

Question40: You are asked to manage multicast traffic in the EVPN-VXLAN environment. You must ensure that multicast traffic is delivered only to the leaf device with interested receivers. In this scenario, which feature is required on leaf devices to accomplish this task?

Question41: In the exhibit, VM1 is part of the same VXLAN segment as VM3.

Which type of message will VTEP B initially send to the RP so that VM3 can communicate with VM1?

Question42: Referring to the exhibit, not all routes are being exchanged by EBGP peers.

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

Question43: What is an advantage that EVPN has over VPLS when used for DCI?

Question44: Which two statements describes an IP fabric? (Choose two.)

Question45: Application developers are complaining that east-west server traffic is not being load balanced in your new data center. What are three reasons for this behavior? (Choose three.)

Question46: The MC-LAG group shown in the exhibit is providing high availability services for the directly connected servers. The backup liveness detection is applied to the ICL-PL link, however, when one of the members rebooted, there was traffic loss for a few seconds.

In this scenario, where should you apply the backup liveness detection?

Question47: You are troubleshooting an L3VPN that is part of an EVPN/MPLS DCI. You notice that the EVPN overlay BGP session toward 10.29.50.4 is unable to establish.

Why is the BGP session failing to establish?

Question48: Referring to the exhibit,

which two statements are correct? (Choose two.)

Question49: You are troubleshooting a traditional Clos Layer 3 IP fabric in your data center. You are reviewing the BGP configuration for one of your spine devices.

Referring to the exhibit, which statement is correct?

Question50: You are configuring an MX Series router to act as a Layer 3 gateway to route traffic between VXLANs in different data centers across a WAN connection. In this scenario, what must you do to enable this communication?

Question51: You have deployed a multitenant EVPN-VXLAN fabric. You must have the routes in the BLUE VRF show up in the RED VRF. In this scenario, how would you achieve this goal?

Question52: When using EBGP as the underlay protocol for your IP fabric architecture, which two statements are true? (Choose two.)

Question53: You are designing an EBGP IP fabric for a multi-side data center. In this scenario, which two statements are true? (Choose two.)

Question54: You have deployed two data centers that require a Layer 2 stretch between host1 and host2.

Referring to the exhibit, what does a Layer 2 stretch require?

Question55: You are deploying a 3-stage Clos IP fabric in your data center. In this scenario, which statement is correct?

Question56: You are asked to scale the available bandwidth within your Clos data center network to support more east-west traffic. In this scenario, what are two ways to accomplish this task? (Choose two.)

Question57: 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?

Question58: You are creating a new EVPN and are asked to selectively accept certain MAC advertisement routers from your EVPN peers using VXLAN Encapsulation.
Which statements is correct in this scenario?

Question59: You are considering deploying a MAC-VRF type routing instance with a VLAN-bundle service type. In this scenario, which two statements are correct? (Choose two.)

Question60: Refer to the exhibit.

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

Question61: What happens when a packet is encapsulated by a VXLAN before being placed in the overlay?

Question62: You are required to create an IP fabric for your new data center. In this scenario, which protocol would be used to support EVPN?

Question63: Which three statements are correct about multitenancy in a Junos EVPN environment? (Choose three.)

Question64: Which protocol is used between VCF member devices to create a loop-free topology?

Question65: You are implementing an EVPN overlay in your IP fabric data center. The IP fabric was stable before configuring the overlay group and EVPN-related settings. After committing the configuration shown in the exhibit on your spine device, you are no longer exchanging any routes in your underlay fabric.

In this scenario, what will solve this problem?

Question66: A client with five data centers spread around the country uses MPLS L2VPNs to provides point- to- point data center interconnect between each data center in a full-mesh network. The client Is considering an MPLS EVEN implementation.
In this scenario, what are three advantages of using MPL5 EVEN interconnects? (Choose two.)