EMT Practice Test

1. Question Content...

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Question1:
Referring to the exhibit, which hardware change would be made to the IP Fabric to ensure an exact 4:1 oversubscription ratio?

Question2: You are asked to design a deployment plan for a large number of QFX Series switches using zero touch provisioning (ZTP). The ZTP deployment plan must ensure all switches are upgraded to the desired software version.
Which DHCP option are suboption combination would be used to accomplish this task?

Question3: Which statement is true for an IP Fabric to be called a Clos IP Fabric?

Question4:
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?

Question5:
Referring to the exhibit, which two MAC addresses are learned from the local side of the MC-LAG link?

Question6: You have deployed a multicast server attached to a QFX5100 Series device serving as a VTEP.
Which two statements are correct in this scenario? (Choose two.)

Question7: You are having management connectivity problems with a mixed-mode Virtual Chassis.
Which statement is correct in this scenario?

Question8: You are building a mixed-mode Virtual Chassis with two QFX5100-24Qs, four QFX3500-48s, two EX4600-
40Fs and two EX4300-48Ts. The Virtual Chassis will not provision.
In this scenario, which statement is correct?

Question9:
Referring to the exhibit, SW-3 and SW-4 have been configured for mixed-mode VCF and added to the VCF. After cabling the new devices into the VCF, you notice that SW-3 automatically joins the VCF, whereas SW-4 does not.
Why are SW-3 and SW-4 behaving this way? (Choose two.)

Question10:
Referring to the exhibit, R1 and R2 are QFX5100 Series devices acting as VXLAN Layer 2 Gateways using PIM-SM signaling for the same VXLAN segment (VNI 5100). The multicast group assigned to VNI 5100 is
239.0.0.1. R1 currently has an entry in its MAC table for Host B.
In this scenario, how will R1 react to receiving the Ethernet frame from Host A?

Question11:
The exhibit shows an output from a QFX5100 Series switch serving as an MC-LAG peer.
Which two statements are true in this scenario? (Choose two.)

Question12: Which statement is correct about EVPN Type 2 routers?

Question13:
Referring to the exhibit, PE1 and PE2 are acting as MPLS Layer 3 VPN PEs to provide the DCI between DC1 and DC2, which are IP Fabrics. Leaf 1 and Leaf 2 are QFX5100 Series devices acting as VXLAN Layer 2 Gateways using EVPN signaling for the same VXLAN segment.
Which statement is correct about the Edge1 device in this scenario?

Question14: Which EVPN service consists of a single broadcast domain per EVPN instance?

Question15: You are building an EVPN Data Center Interconnect. You must support multiple VLANs in a single EVPN instance.
Which parameter provides this functionality?

Question16: A customer notices that all traffic is traveling over a single link within their partially meshed IP Fabric using IBGP. While troubleshooting, the customer notices that the configuration is missing a configuration parameter.
Which parameter would the customer use to solve this problem?

Question17: What are two valid types of VXLAN signaling? (Choose two.)

Question18:
Referring to the exhibit, R1 and R2 are QFX5100s and are acting as VXLAN Layer 2 Gateways for VLAN
100 using PIM-SIM signaling. R1 currently has an entry for Host B in its MAC table.
What will R1 do in response to receiving the ARP packet from Host A?

Question19:
You are deploying MC-LAG as shown in the exhibit.
Which statement is correct when using active/standby mode?

Question20: You are implementing a Virtual Chassis using QFX5100s and EX4300s in your data center.
In this scenario, which three hardware capabilities are affected? (Choose three.)

Question21: Which three BGP messages pass EVPN information between devices? (Choose three.)

Question22:
You have configured a DHCP server for ZTP as shown in the exhibit. Your network contains EX2200 and QFX5100 devices, however, only the EX2200s are receiving the baseline configuration file. You want to ensure that all of the switches in your network receive the baselineconfiguration file.
Which actions will satisfy this requirement?

Question23: Which two statements are correct when performing a unified ISSU? (Choose two.)

Question24:
Which statement is valid for EVPN multihoming CE1 to PE1 and PE2 as shown in the exhibit?

Question25: You are establishing an IP Fabric where your QFX10002-72Q spine devices are connecting to leaf devices. Each leaf is a Virtual Chassis comprised of ten EX4300s.
What is the maximum number of leaf devices supported in this scenario?

Question26: Which protocol replicates forwarding information between MC-LAG peers?

Question27: A customer has built a VXLAN using an EVPN signaling infrastructure with remote facilities with VXLAN using EVPN signaling connected to the Internet. The customer notices that the network is completely stable with no protocol errors in the underlay or overlay. The customer, however, cannot pass any application data across the network.
Which statement would explain the intermittent loss?

Question28: What is the endpoint of a VXLAN tunnel?

Question29:
Referring to the exhibit, a failure has occurred and the original VCF has split into two separate VCFs. The VCF associated with SW-1 is active and the VCF associated with SW-3 is inactive.
In this scenario, why are the two VCFs in these states?

Question30: You have built a mixed-mode VCF consisting of two QFX5100-24Qs as spines, two QFX5100-48S as leaf nodes, and one EX4300 as a leaf node. The VCF is working for all devices, except the EX4300 40GbE fabric links will not join the VCF.
In this scenario, what must be corrected to solve the connectivity problem?

Question31: You are deploying an IP Fabric in your new data center. You need to ensure that your servers have multiple active/active links for redundancy and load balancing.
What are two methods to accomplish this goal? (Choose two.)

Question32:
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?

Question33: An EX9200 switch is acting as a Layer 3 VXLAN gateway.
In this scenario. which action will allow you to communicate between two VLANs?

Question34: You created an IP Fabric based on IBGP. You noticed that ECMP load sharing is not working.
In this scenario, what is the problem?

Question35:
A customer has a 3-stage Clos architecture with three spine devices as shown in the exhibit.
If a single spine device fails, what percentage of the remaining bandwidth will be available from leaf node to leaf node?

Question36:
You are deploying MC-LAG as shown in the exhibit.
Which statement is correct when using active/active mode?

Question37: You want to converse IP address space and reduce your fabric management overhead. For these reasons, you decided to use unnumbered Ethernet interfaces for your IP Fabric.
Which statement is correct in this scenario?

Question38: In a preprovisioned mixed Virtual Chassis, which statement is correct about converting a 40Gbps QSFP+ to a Virtual Chassis port in an EX4300?

Question39:
You are attempting to deploy a VCF as shown in the exhibit. SW-1 and SW-2 are functioning as the spine devices and SW-3 and SW-4 are functioning as the leaf devices. However, the VCF is not functioning properly.
Which two actions would solve this problem? (Choose two.)

Question40: You are building a DCI solution and need both a Layer 2 solution and a Later 3 solution for different workloads within your data centers.
What are two reasons why MPLS would be used a transport for this DCI solution? (Choose two.)

Question41:
Spine 1 and Spine 2 are MX Series devices configured to act as redundant VXLAN Layer 3 Gateways using the virtual-gateway-address 10.0.1.254statement,
Referring to the exhibit, how will a spine node react to receiving the ARP request from Host A?

Question42: You have an EBGP-based IP Fabric.
Why do you need an export policy on each leaf in this scenario?

Question43:
Referring to the exhibit, R1 and R2 are QFX5100s and are acting as VXLAN Layer 2 Gateways for VLAN
100 using PIM-SM signaling.
What will cause R2 to send a (*.G) PIM Join towards the RP?

Question44: Which statement is true about a Data Center Interconnect over an IP network?

Question45: Which two technologies provide Layer 2 services across data centers in two remote locations? (Choose two.)

Question46:
Referring to the exhibit, each leaf node is a QFX5100 acting as a VXLAN Layer 2 Gateway using EVPN signaling. Leaf 2 and Leaf 3 are both attached to the same EVPN Ethernet segment. Leaf 2 has been elected the designated forwarder for VLAN 200 on that Ethernet segment.
In this scenario, which two actions will Leaf 1 perform with the broadcast Ethernet frame received from Host A? (Choose two.)

Question47: Which protocol is used between VCF member devices to create a loop-free topology?

Question48: Your server administrator asks you to preserve the inner VLAN tags of the frames coming from a Layer 2 VXLAN Gateway of the EVPN-enabled segment.
Which two parameters must you add to the configuration to allow the VLAN tag to be passed? (Choose two.)

Question49:
VMs on Server-1 and Server-2 are on the same Layer 2 domain within a VCF and are sending traffic to each other.
Referring to the exhibit, which three criteria are used when load-balancing traffic? (Choose three.)

Question50: You are deploying 50 QFX5100 switches in your data center. You are asked to explain the benefits of using ZTP during your deployment of these devices.
What is a benefit of this deployment?

Question51:
Referring to the VCF shown in the exhibit, what is the remote destination trunk weight for the SW-4, SW-1, SW-5 path?

Question52:
Referring to the exhibit, what is the MAC address of the IRB interface on router PE1?

Question53: What are three benefits of EVPN that would improve the current E-line, E-LAN, and E-Tree delivery?
(Choose three.)

Question54: You are using IBGP to deploy an IP fabric. There are four spine devices, two of which are configured as route reflectors. You notice that the other two spines are not receiving all the possible paths to each leaf, and traffic cannot be load-balanced to the leaf devices.
Which two actions will resolve this problem? (Choose two.)

Question55: You must manually configure VXLAN on a QFX5100.
Which protocol is required to perform this task?

Question56: You are performing an in-service software upgrade (ISSU) on an QFX5100 Series device.
Which two statements are correct in this scenario? (Choose two.)

Question57: You are implementing a Virtual Chassis using QFX5100s and EX4300s in your data center.
In this scenario, which two statements are correct? (Choose two.)

Question58:
The VCF shown in the exhibit is not functioning correctly.
What must you do to get the VCF to function properly?

Question59: 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.)

Question60:
Referring to the exhibit, VMs on Server-1 are sending traffic to VMs on Server-2. All VCPs in the VCF have
40Gbps of bandwidth available and automatic fabric trunking is bundling multiple VCPs together.
Which statement is correct in this scenario?

Question61: You are configuring VXLAN on a network of QFX5100s, and are using the set vlans vlan100 vxlan unreachable-vtep-aging-timer 600command.
What does this command do?

Question62:
You are deploying a VXLAN using EVPN signaling overlay network. PE1 and PE2 are multihomed to the connected CE device. You notice that the traffic is not load-balancing as expected.
Referring to the exhibit, which two actions will solve this problem? (Choose two.)

Question63: 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?