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Juniper JN0-682 Practice Test - Questions Answers, Page 15

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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?
Refer to the exhibit. Referring to the exhibit, which two statements are correct? (Choose two.)
Which two statements about a DHCP relay in an EVPN-VXLAN fabric are correct? (Choose two.)
Which two statements are true Virtual Chassis? (Choose two.)
Which two combinations are supported when configuring a Virtual Chassis Fabric? (Choose two.)
Which protocol is used between VCF member devices to create a loop-free topology?
Referring to the exhibit, each node in the IP fabric is peering to its directly attached neighbor using EBGP. Each node is peering using physical interface IP addresses. Leaf 2 and Leaf 3 are advertising the 10.1.1/24 network into EBGP. Spine 2 must be configured so that it can load- share traffic destined to the 10 1.1/24 network over both next-hop A and next-hop B. Which two actions must be performed to accomplish this task? (Choose two.)
You are asked to enable plug-and-play line card switches in an active VCF without making any future Junos configuration charges. You are also required to ensure that all new line card are automatically upgrade to the correct Junos version without any manual intervention. In this scenario, which two actions will accomplish this task? (Choose two.)
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.)
Which two statements are correct about VXLANs? (Choose two.)

Question 141

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

A.
LLDP
A.
LLDP
Answers
B.
MDTP
B.
MDTP
Answers
C.
RSTP
C.
RSTP
Answers
D.
VCCP
D.
VCCP
Answers
Suggested answer: C

Explanation:

In Virtual Chassis Fabric (VCF) configurations, RSTP (Rapid Spanning Tree Protocol) is used among VCF member devices to create a loop-free topology, ensuring efficient and reliable network paths.

Question 142

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You are building a new IP fabric data center underlay network and want to ensure predicted 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 spine devices are the same switched mode.
A.
Ensure that all spine devices are the same switched mode.
Answers
B.
Ensure that all uplinks are 40GbE.
B.
Ensure that all uplinks are 40GbE.
Answers
C.
Ensure that every leaf node has an uplink spine node
C.
Ensure that every leaf node has an uplink spine node
Answers
D.
Ensure that every node has a link to every other leaf node
D.
Ensure that every node has a link to every other leaf node
Answers
Suggested answer: A, C

Explanation:

A) Ensuring that all spine devices are of the same type (switched mode) can contribute to predictable load-balancing behavior due to consistent handling of traffic across all spine nodes.

C) Ensuring that every leaf node has an uplink to every spine node helps in achieving even load distribution and redundancy, contributing to predictable load-balancing in the fabric.

Question 143

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Which protocol replicates forwarding information between MC-LAG peers?

A.
VCCP
A.
VCCP
Answers
B.
ICCP
B.
ICCP
Answers
C.
VRRP
C.
VRRP
Answers
D.
LLDP
D.
LLDP
Answers
Suggested answer: B

Explanation:

ICCP (Inter-Chassis Control Protocol) is used to replicate forwarding information between MC-LAG (Multi-Chassis Link Aggregation Group) peers. It coordinates the state and roles of the MC-LAG peers and ensures consistent forwarding state between them.

Question 144

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

A.
To stop the reception of transit multicast traffic when there are no interested receives attached to the local VTEP
A.
To stop the reception of transit multicast traffic when there are no interested receives attached to the local VTEP
Answers
B.
To disable the group2390.0.1 across the entire VXLAN.
B.
To disable the group2390.0.1 across the entire VXLAN.
Answers
C.
To stop the transmission of transit multicast traffic when there are no interested receives attached to a remote VTEP
C.
To stop the transmission of transit multicast traffic when there are no interested receives attached to a remote VTEP
Answers
D.
To disallow IGMP request for the group 239.0.01 from host attached to the local VTEP
D.
To disallow IGMP request for the group 239.0.01 from host attached to the local VTEP
Answers
Suggested answer: C

Question 145

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You are designing a Layer 3 fabric underlay using EBGP. You will implement an E VPN-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?

A.
The underlay should support the PIM protocol
A.
The underlay should support the PIM protocol
Answers
B.
Each device in the underlay should advertise its loopback address
B.
Each device in the underlay should advertise its loopback address
Answers
C.
The underlay should be configured with a separate VRF tor each potential tenant
C.
The underlay should be configured with a separate VRF tor each potential tenant
Answers
D.
The underlay should advertise the host connected interlaces on all leaf device
D.
The underlay should advertise the host connected interlaces on all leaf device
Answers
Suggested answer: B

Explanation:

For a VXLAN overlay to function properly over a Layer 3 EBGP fabric underlay, it's essential that each device in the underlay advertises its loopback address. This ensures reachability between the devices, facilitating proper tunnel establishment for the VXLAN overlay.

Juniper Networks - EVPN VXLAN Configuration Guide

Question 146

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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
A.
OSPF
Answers
B.
EVPN
B.
EVPN
Answers
C.
PIM
C.
PIM
Answers
D.
BOP
D.
BOP
Answers
Suggested answer: C

Question 147

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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 route-distinguisher value on the local PE is incorrect
A.
The route-distinguisher value on the local PE is incorrect
Answers
B.
There is no route for 192.168.5.5 an VPN net 0.
B.
There is no route for 192.168.5.5 an VPN net 0.
Answers
C.
There is no route for 192.168.5.5. in inet 3.
C.
There is no route for 192.168.5.5. in inet 3.
Answers
D.
The vrf-table abel value is not configured in the remote PE.
D.
The vrf-table abel value is not configured in the remote PE.
Answers
Suggested answer: C

Question 148

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

A.
Four spine nods and 20 leaf nodes
A.
Four spine nods and 20 leaf nodes
Answers
B.
Four spine nods with 16 leaf nodes
B.
Four spine nods with 16 leaf nodes
Answers
C.
two spine nods and 16 leaf nodes
C.
two spine nods and 16 leaf nodes
Answers
D.
Two spine and 28 leaf nodes
D.
Two spine and 28 leaf nodes
Answers
Suggested answer: A, B

Explanation:

In a Virtual Chassis Fabric (VCF) configuration, both combinations of four spine nodes with 20 leaf nodes, and four spine nodes with 16 leaf nodes are supported. This configuration ensures scalability and flexibility in network design.

[Juniper Networks - Virtual Chassis Fabric Configuration Guide]

Question 149

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

A.
Spine nodes peer to both leaf and spine nodes
A.
Spine nodes peer to both leaf and spine nodes
Answers
B.
Leaf nodes only peer to spine nodes
B.
Leaf nodes only peer to spine nodes
Answers
C.
Leaf nodes peer to both spine and leaf nodes
C.
Leaf nodes peer to both spine and leaf nodes
Answers
D.
Spine nodes only peer to leaf nodes
D.
Spine nodes only peer to leaf nodes
Answers
Suggested answer: A, B

Explanation:

In an EBGP-based IP fabric architecture, the spine nodes form peering relationships with both other spine nodes and leaf nodes. However, the leaf nodes are configured to only form peering relationships with the spine nodes, not with other leaf nodes. This hierarchical approach simplifies the network topology and routing.

Juniper Networks - IP Fabric Architecture Guide

Question 150

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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?

A.
A route to the loopback address on VTEP must be present on VTEP1.
A.
A route to the loopback address on VTEP must be present on VTEP1.
Answers
B.
VTEP and VTEP2 must peer using IBGP.
B.
VTEP and VTEP2 must peer using IBGP.
Answers
C.
VXLAN Layer 3 gateway must be provisioned at the Super Spine layer.
C.
VXLAN Layer 3 gateway must be provisioned at the Super Spine layer.
Answers
D.
The service provider WAN connection be an MPL5-based WAN connection.
D.
The service provider WAN connection be an MPL5-based WAN connection.
Answers
Suggested answer: A
Total 154 questions
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