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Latest Juniper JN0-681 Exam Practice Questions and Answers
QUESTION 1
You are asked to deploy 20 QFX Series devices using ZTP. Each QFX5100 requires a specific FTP server.
In this scenario, which two components must you configure on the DHCP server? (Choose two.)
A. the IP address of the FTP server
B. the MAC address of the FTP server
C. the IP address of each QFX5100
D. the MAC address of each QFX5100
Correct Answer: AD
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
What is the purpose of the command shown in the exhibit?
A. to stop the transmission of transit multicast traffic when there are no interested receivers attached to a remote VTEP.
B. to disallow IGMP requests for the group 239.0.0.1 from hosts attached to the local VTEP.
C. to disable the multicast group 239.0.0.1 across the entire VXLAN.
D. to stop the reception of transit multicast traffic when there are no interested receivers attached to the local VTEP.
Correct Answer: A
QUESTION 4
You are creating a new EVPN and are asked to selectively accept certain MAC advertisement routes from your EVPN
peers using VXLAN encapsulation.
Which statement is correct in this scenario?
A. You can use MAC filtering to filter out unwanted routes.
B. You can use VRF import policies and route distinguisher values to filter out unwanted routes.
C. You can use VRF import policies and community values to filter out unwanted routes.
D. You can use firewall filters to filter out unwanted routes.
Correct Answer: C
QUESTION 5
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 6
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 7
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 security services without
needing to leave the physical device.
In this scenario, what should you do to solve this problem?
A. Use separate vSwitches to isolate each tenant\\’s networks and use IP tables to evaluate inter-tenant traffic.
B. Use VLANs to isolate each tenant\\’s networks and use an SRX Series device to evaluate inter-tenant traffic.
C. Use a vMX device to isolate each tenant\\’s networks and use with firewall filters to evaluate inter-tenant traffic.
D. Use separate vSwitches to isolate each tenant\\’s networks and use a vSRX Series device to evaluate inter-tenant
traffic.
Correct Answer: D
QUESTION 8
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.
Correct Answer: A
QUESTION 9
Which two statements describe an IP fabric? (Choose two.)
A. Open standards allow for vendor interoperability.
B. Each leaf should have a connection to each spine.
C. xSTP protocols should be used to prevent loops.
D. Traffic should always follow a single path.
Correct Answer: BC
QUESTION 10
You are deploying a VXLAN using EVPN signaling overlay network in your new data center. You are able to establish
your MP-BGP peering sessions and see your EVPN routes, but traffic will not traverse the VXLAN using EVPN
signaling overlay network.
What is the solution to this problem?
A. Increase the MTU on the logical VTEP source interface of all devices participating in VXLAN using EVPN signaling.
B. Enable the MTU-discovery feature on the MP-BGP peering sessions between all VXLANs using EVPN signaling
peers.
C. Increase the protocol MTU on all devices participating in VXLAN using EVPN signaling.
D. Increase the physical MTU on all ports on all devices participating in VXLAN using EVPN signaling.
Correct Answer: D
QUESTION 11
Your colleague has begun working on the base configuration for an active-active multihomed EVPN connection shown
in the exhibit.
Which two actions will ensure a successful implementation? (Choose two.)
A. Change the ESI mode on PE1 to single-active.
B. Change the ESI mode on PE2 to all-active.
C. Change the ESI value on the PE2 device to 00:00:00:00:00:00:00:00:00:00.
D. Change the ESI value on the PE1 device to 00:22:44:66:88:00:22:44:66:88.
Correct Answer: BD
QUESTION 12
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?
A. BGP Additional Paths
B. Bidirectional Forwarding Detection
C. Ethernet Autodiscovery
D. Fast reroute
Correct Answer: C
QUESTION 13
Which EVPN route type prevents BUM traffic from looping back to a multihomed host?
A. IP prefix route
B. Ethernet autodiscovery route
C. Ethernet segment route
D. inclusive multicast-Ethernet tag route
Correct Answer: B
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