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

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

multihop

multipath

multipath multiple-as

as-override

2. 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?

one-arm SRX Series device using LAG

one-arm SRX Series chassis cluster

inline SRX Series chassis cluster

inline SPX Series device using LAG

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

OSPF

IBGP

EBGP

MPLS

4. 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 1:1 ratio.

In this scenario, which two actions would you take to achieve this goal? (Choose two.)

Increase the number of server-facing ports that each leaf node uses to carry traffic.

Reduce the number of server-facing ports that each leaf node uses to carry traffic.

Increase the number of spine nodes in your design.

Reduce the number of leaf nodes in your design.

5. 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.)

From Leaf 2, issue the show route advertising-protocol bgp 172.16.1.2command.

From Spine 1, issue the show route advertising-protocol bgp 172.16.1.1command.

From Spine 1, issue the show route advertising-protocol bgp 172.16.1.2command.

From Leaf 1, issue the show route receive-protocol bgp 172.16.1.1command.

6. 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?

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

Each device in the underlay should advertise its loopback address.

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

The underlay should support the PIM protocol.

7. 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?

OSPF

BGP

EVPN

PIM

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

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

Layer 2 data must traverse an MPLS LS

Layer 2 data must be encapsulated.

Layer 3 data must be encapsulated.

9. 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.)

VXLAN

EVPN

VMTO

VPLS

10. A VXLAN adds 50 to 54 bytes of extra header information to an Ethernet frame.

In this scenario, how would you accommodate this increase?

Decrease the number VXLANs used.

Increase the MTU on the physical interface connected to the VXLAN network.

Only use switches as VTEPs.

Increase the MTU on the VTEP interface connected to the VXLAN network.

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11. 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.)

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

They provide for lower transmission latency.

They provide for a local proxy ARP/ND resolution.

They provide for point-to-multipoint connectivity.

They provide for MAC learning in the control plane.

12. You host a multitenant data center that runs VMware. You must perform deep packet inspection on all inter-tenant traffic that is flowing between the VMs within the same hypervisor. Your solution must provide the security services without needing to leave the physical device.

In this scenario, what should you do to solve this problem?

Use separate vSwitches to isolate each tenant's networks and use IP tables to evaluate inter-tenant traffic.

Use VLANs to isolate each tenant's networks and use an SRX Series device to evaluate inter-tenant traffic.

Use a vMX device to isolate each tenant's networks and use with firewall filters to evaluate inter-tenant traffic.

Use separate vSwitches to isolate each tenant's networks and use a vSRX Series device to evaluate inter-tenant traffic.

13. 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?

proxy ARP

static ARP entries

persistent MAC learning

IGMP snooping

14. Which two statements describe MAC address learning for VPLS and EVPN? (Choose two.)

EVPN learns MAC addresses in the data plane.

VPLS learns MAC addresses in the control plane.

VPLS learns MAC addresses in the data plane.

EVPN learns MAC addresses in the control plane.

15. A company wants to expand their hosting business and is seeking solutions to support 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?

routing instances

tenant systems

logical systems

bridge domains

16. 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?

The routers have not been configured with the multipath multiple-asparameter.

The routers have not been configured using the add-pathparameter.

The routers have not been configured using the bfd-liveness-detectionparameter.

The routers have not been configured using the multihopparameter.

17. 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?

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

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

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

VTEP1 and VTEP2 must peer using IBG

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

Public AS numbers must be used.

Different AS numbers should be used on all devices.

The same AS number should be used on all devices across all data centers.

Private AS numbers can be used.

19. 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.)

The MAC address associated with 10.1.1.1/24 and 10.1.1.2/24 will be the same when advertised to leaf3.

The connection from host1 to devices leaf1 and leaf2 must be configured as a LA

Traffic from IP address 10.1.1.1/24 must traverse the VXLAN network to reach IP address 10.1.1.2/24.

The ESI assigned to the leaf1-host1 link must be the same as the ESI assigned to the leaf2-hostl link.

20. You are implementing perimeter security for your data center. You need to inspect all traffic at 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?

SRX using LAG

MX with MC-LAG

QFX Virtual Chassis

SRX chassis cluster

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

LLDP

RSTP

VCCP

MSTP

22. 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.)

Set the ESI on both devices to 00:00:00:00:00:00:00:00:00:00.

Set the route distinguisher on PE2 to 11.11.11.11:100.

Set the LACP system ID on PE2 to 00:00:00:00:00:01.

Set the ESI on PE2 to 00:11:11:11:11:11:11:11:11:11.

23. 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?

R2 will send a (*.G) PIM Join when it receives broadcast, multicast, or unknown unicast traffic from Host

R2 will send a (*.G) PIM Join when it first learns the MAC address of a locally attached host.

R2 will send a (*.G) PIM Join when its VLAN 100 configuration is committed.

24. 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.)

decapsulate-accept-inner-vlan

encapsulate-inner-vlan

layer2-protocol-tunneling

dotlq-tunneling

25. 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.)

MAC table size

maximum number of firewall filters

usable VCP connections limited to 10GbE

number of usable ports per member

number of supported routing instances

26. 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.)

ae0.0 is functioning as an IC

et-0/0/51.0 is a standalone link and not part of an MC-AE bundle.

ae1.0 is functioning as an IC

et-0/0/51.0 is a member link of qfx5100-1 within an MC-AE bundle.

27. 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?

Zeroize the EX4300, cleat all the tables with the clear ethernet-switching tables command on all members, and reissue the request virtual-chassis mixed-mode command.

Turn off authonegotiation on the EX4300 and the attached spine interfaces, and then use the request virtual- chassis vc-port set command on the spine ports connected to the EX4300.

Power off all of the VCF members and power up the spines before powering up the leafs.

Reboot all of the VCF members.

28. Which 3 benefits do VXLANs offer to VLANs? (Choose three.)

VXLAN uses a 24-bit VNID to overcome the 4094 vlan scale limitation

It provide better utilization of available paths in the overlay infrastructure

It provides better utilization of available network paths in the underlay infrastructure

It provides a solution to extent Layer 2 segments over a shared Layer 3 routed network

VXLAN uses a 16-bit VNID to overcome the 4094 vlan scale limitation

It provide a solution to extent Layer 2 segment over a single Layer 2 VLAN

29. Which statement describes a Juniper Virtual Chassis Fabric?

two or more QFX Series or EX Series switches in a daisy-chain topology

two or more QFX Series or EX Series switches in a ring topology

two or more QFX Series or EX Series linked in a spine-leaf topology

two or more QFX Series or EX Series switches in a full mesh topology

30. 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 baseline configuration file.

Which actions will satisfy this requirement?

Remove the ignore client-updates statement.

Change the 150 suboption to reference the MAC address.

Use FTP instead of TFTP for the transfer protocol.

Reference all the switch models in the file where necessary.

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31. 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?

when R1 receives a known unicast Ethernet frame from Host A

when R2 receives broadcast, multicast, or unknown unicast from Host A

when R2’s VNI 5100 configuration is committed

when R2 first learns the MAC address of a locally attached host

32. 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.)

The fast failover capabilities of MPLS nodes can be accomplished in a recovery time that is equivalent to 50 ms or better.

MPLS allows you to interconnect multiple data centers over a public IP network.

MPLS allows for any-to-any connectivity allowing for both Layer 2 and Layer 3 DCIs.

MPLS allows you to natively runnel your own Layer 2 traffic through the service provided L3VP

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

10/40

30/40

20/40

40/40

34. 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?

DHCP options 66 with a supoption of 03

DHCP options 43 with a supoption of 03

DHCP options 43 with a supoption of 00

DHCP options 66 with a supoption of 00

35. 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?

add-path

accept-remote-nexthop

advertise-peer-as

multihop

36. You are performing an in-service software upgrade (ISSU) on an QFX5100 Series device.

Which two statements are correct in this scenario? (Choose two.)

The vccpd process is used to synchronize the state of the master RE to the new backup R

The mgd process is used to validate system configuration requirements.

The ksyncd process is used to synchronize the state of the master RE to the new backup R

The dcd process is used to validate system configuration requirements.

37. Which two statements are true regarding IP fabrics?

An IP fabric uses standby links for redundancy.

An IP fabric uses routing protocols to avoid loops.

An IP fabric load balances across links for redundancy.

An IP fabric uses Spanning Tree Protocol to avoid loops.

38. 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. Leaf1 and Leaf2 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?

Edge1's routing table must contain an IP route to both Leaf1 and Leaf2.

Edge1 must be configured for BGP labeled unicast on its PE1-facing interface.

Edge1 must be configured for MP-BGP using L3VPN signaling.

Edge1 must be configured for MP-BGP using EVPN signaling.

39. You are configuring VXLAN on a network of QFX5100s, and are using the set vlans vlan100 vxlan command: unreachable-vtep-aging-timer 600

What does this command do?

This command ages out a locally learned MAC address assigned to the VTEP after 600 seconds of inactivity.

This command ages out the address of the remote VTEP 600 seconds after the last learned MAC address expires.

This command ages out all learned MAC addresses assigned to the VTEP after 600 seconds of inactivity.

This command ages out a remotely learned VTEP address after 600 seconds of inactivity.

40. 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.)

By default, QFX5100 ports are enabled as VCPs.

By default, QFX5100 ports are not enabled as VCPs.

By default, EX4300 QSPF+ ports are not enabled as VCPs.

By default, EX4300 QSFP+ ports are enabled as VCPs.

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

integrated L2/L3 connectivity

greater Multiprotocol Label Switching scale

network resiliency between edge nodes

native support for multihoming

efficient security provisioning

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

CE1 must have LACP enabled on the interfaces attached to the PEs.

The PEs must be manually configured for the ESI value on the interfaces attached to the CEs.

The PEs use BPDU autodiscovery by enabling STP on the interfaces attached to CE1.

CE1 must have the MAC mobility extended community enabled in BGP on both the CE and PEs.

43. What is the endpoint of a VXLAN tunnel?

DLCI

LSR

VTEP

VCF

44. 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?

on the ae2 interface

on the ae1 interface

on the management interfaces

on the ICL-PL connection

45. 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?

approximately 25%

approximately 33%

approximately 75%

approximately 66%

46. Which two options are network consideration for common VXLAN deployment? (Choose two.)

MTU size in the transport network

consistent VLAN-to-VN-Segment mapping

placement of VXLAN tunnel endpoints

multicast group scaling

consistent VNI-to-group mapping

47. What are two methods used to scale an IBGP IP Fabric? (Choose two.)

route reflection

spanning tree

confederations

redundant trunk groups

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

RSTP

PIM

EVPN

RSVP

49. You are building an EVPN Data Center Interconnect. You must support multiple VLANs in a single EVPN instance.

Which parameter provides this functionality?

instance-type evpn

instance-type no-forwarding

instance-type 12vpn

instance-type virtual-switch

50. You are deploying MC-LAG as shown in the exhibit.

Which statement is correct when using active/standby mode?

VCCP is used to exchange MAC addresses between MC-LAG peers.

All traffic from Server A to Host 1 will traverse the link between Server A and ex2.

A spanning tree protocol should be used to avoid Layer 2 loops between Server A and both switches.

Only ICCP control traffic is allowed through the ICL-PL connection.