Juniper jn0-681 practice test

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

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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.

You are building a new IP fabric data center underlay network and want to ensure predictable load-balancing behavior for traffic traversing the fabric.
What are two approaches you should take to satisfy the requirement in this scenario? (Choose two.)

• A. Ensure that all uplinks are 40GbE.
• B. Ensure that every leaf node has a link to every other leaf node.
• C. Ensure that every leaf node has an uplink to every spine node.
• D. Ensure that all spine devices are the same switch model.

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?

• A. The vrf-table-label value is not configured in the remote PE.
• B. The route-distinguisher value on the local PE is incorrect.
• C. There is no route for 192.168.5.5 in inet.3.
• D. There is no route for 192.168.5.5 in VPN.inet.0.

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.)

• A. The MAC address associated with 10.1.1.1/24 and 10.1.1.2/24 will be the same when advertised to leaf3.
• B. The connection from host1 to devices leaf1 and leaf2 must be configured as a LAG.
• C. Traffic from IP address 10.1.1.1/24 must traverse the VXLAN network to reach IP address 10.1.1.2/24.
• D. The ESI assigned to the leaf1-host1 link must be the same as the ESI assigned to the leaf2-hostl link.

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?

• A. SRX using LAG
• B. MX with MC-LAG
• C. QFX Virtual Chassis
• D. SRX chassis cluster

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

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

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

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.

What are three advantages of using MPLS for data center interconnects? (Choose three.)

• A. dedicated MPLS backbones for Layer 2 and Layer 3 DCIs
• B. any-to-any connectivity
• C. traffic engineering
• D. dedicated connections between customer sites
• E. sub 50 ms failover times