[Nov 09, 2021] Pass Juniper JN0-681 Exam Info and Free Practice Test
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Taking Your Exam and How to Prepare for It with Juniper
You can register via the Pearson VUE website for the Professional Data Center JN0-681 certification test. Consequently, make sure you are ready and comfortable with the right resources before the official exam. The Juniper website itself provides helpful resources that you can discover while planning for your JN0-681 validation. Juniper on-demand training courses are a great way to begin preparing for your Data Center professional exam. For example, you can enroll in the Junos Intermediate Routing (JIR) or the Junos Enterprise Switching (JEX) classes offered by the vendor. They provide technical coaching and hands-on research facilities. Together with access to solid online course materials, each section of those classes will have self-paced & web-delivered guidance. Training prices can vary from region to region, so for more information, visit the Juniper website.
Extra Resources for Your JN0-681 Exam
Although training courses found on the Juniper website are really helpful, you can also refer to other resources available online and offline to help you with your JN0-681 exam. Thus, here are a few books from Amazon that you can look at when preparing for your real validation:
- First Edition of Architecture, Protocols, and Tools by Dinesh G. Dutt
If you intend to validate your skills in current cloud-native data center networks, this book is a smart start then. Such a guide is suitable for network engineers, operators of data centers, and developers of networks in container-based applications. Also, it is completely packed with examples for individuals who are engaged in networking using open-source applications, from FRR to Ansible. Furthermore, networking principles such as clos topology, container networking, the virtualization of the network and EVPN, options for network automation, and routing protocol are discussed in a manual like this.
- First Edition of Juniper QFX10000 Series by Jr. Douglas Rickard Hanks
This guide is a great resource for Data Network Engineers who are preparing for Juniper exams. In it, you will discover how to use the switch for the next-generation in your data center to compose it all from web data centers to conventional application IT data centers. What’s more, such a book is constructed to provide ultimate deep buffers, success scale, and feature functionality for the data center using in-house Juniper silicon. Finally, you will learn how to design your own network infrastructure architecture, comprehend the highest power and scaling, generate a switching fabric for the data center with JunosFusion, and develop a network-based interface fabric with EVPN-VXLAN.
- First Edition of Juniper Networks Warrior by Peter Southwick
This book provides a unique case study of the development, installation, and troubleshooting of Juniper operating systems. Here, you can also find many networking issues for data centers, such as the hosting company that has transferred its core, data center, and access areas to a Juniper network. The author also discusses the core network and network layer strategies that helped companies support users and ISPs in the market for data services.
- Data Center Deployment with EVPN/VXLAN by Deepti Chandra
Such a guide gives you a systematic knowledge of the basics of EVPN/VXLAN technologies and how they've been applied. In order to illustrate various flows of traffic in a data center and for Data Center Interconnect, the book provides comprehensive configuration patterns, commands for validation, and captures for packages. Besides the author elaborates on five entire case studies together with the examples from a senior data center architect including configurations and field-tested insights.
Test Prerequisites
In order to take the Professional Data Center JN0-681 exam, you must first complete the Specialist Enterprise Routing and Switching or JNCIS-ENT certificate by nailing JN0-348 validation. In addition, Juniper recommends some industrial experience in areas such as data networking, cloud services, Layer 2 switching for the Junos OS, security, and IS-IS. Also, you will have a better chance of passing the final exam with the right practice materials and training.
NEW QUESTION 26
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.)
- A. Use multihop.
- B. Use a load-balancing policy applied to the forwarding table.
- C. Use multipath multiple-AS.
- D. Use advertise-inactive.
Answer: B,C
NEW QUESTION 27 
You are deploying MC-LAG as shown in the exhibit.
Which statement is correct when using active/standby mode?
- A. Only ICCP control traffic is allowed through the ICL-PL connection.
- B. A spanning tree protocol should be used to avoid Layer 2 loops between Server A and both switches.
- C. All traffic from Server A to Host 1 will traverse the link between Server A and ex2.
- D. VCCP is used to exchange MAC addresses between MC-LAG peers.
Answer: C
NEW QUESTION 28
Referring to the VTEP output shown in the exhibit, which two statements are true? (Choose two.)
- A. The MAC address.52:54:00:5e:88:6a belongs to a local host.
- B. The MAC address 52:54:00:2c:4b:a2 belongs to a remote host.
- C. The MAC address 52:54:00:2c:4b:a2 belongs to a local host.
- D. The MAC address 52:54:00:5e:88:6a belongs to a remote host.
Answer: B,D
NEW QUESTION 29
Referring to the exhibit, what would cause the problem on VCP 0/50?
- A. The VCP has been disabled through configuration
- B. VCP 0/50 is configured as a network port.
- C. The port is missing the interface hardware
- D. The remote side is not configured as a VCP
Answer: D
NEW QUESTION 30
Which EVPN route type would be used in DCI situation in which the IP subnets between data center are complete unique?
- A. Type 4
- B. Type 2
- C. Type 3
- D. Type 5
Answer: D
NEW QUESTION 31
You are designing an EBGP IP fabric for a multi-site data center.
In this scenario, which two statements are true? (Choose two.)
- A. Different AS numbers should be used on all devices.
- B. The same AS number should be used on all devices across all data centers.
- C. Public AS numbers must be used.
- D. Private AS numbers can be used.
Answer: A,D
NEW QUESTION 32
When using EBGP as the underlay protocol for your IP fabric architecture, which two statements are true?
(Choose two.)
- A. Spine nodes only peer to leaf nodes
- B. Spine nodes peer to both leaf and spine nodes
- C. Leaf nodes only peer to spine nodes
- D. Leaf nodes peer to both spine and leaf nodes
Answer: A,C
NEW QUESTION 33
Your manager asks you to secure ARP and DHCP traffic across your local Ethernet links In this scenario, which technology will accomplish this task?
- A. A firewall filter
- B. MAC sec
- C. IPsec
- D. SSL
Answer: B
NEW QUESTION 34 
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?
- A. Edge1's routing table must contain an IP route to both Leaf1 and Leaf2.
- B. Edge1 must be configured for MP-BGP using L3VPN signaling.
- C. Edge1 must be configured for MP-BGP using EVPN signaling.
- D. Edge1 must be configured for BGP labeled unicast on its PE1-facing interface.
Answer: A
NEW QUESTION 35
Which EVPN router type prevents BUM traffic from looping back to a multihued host?
- A. Inclusive multicast-Ethernet tag route
- B. Ether auto discovery route
- C. Ethernet segment router
- D. IP prefix route
Answer: B
NEW QUESTION 36
Which EVPN route type prevents BUM traffic from looping back to a multihomed host?
- A. Ethernet autodiscovery route
- B. Ethernet segment route
- C. inclusive multicast-Ethernet tag route
- D. IP prefix route
Answer: A
NEW QUESTION 37
You are implementing a Virtual Chassis using QFX5100s and EX4300s in your data center.
In this scenario, which two statements are correct? (Choose two.)
- A. Some hardware capabilities are limited by the capabilities of the EX4300 switches.
- B. The QFX5100 devices cannot assume the line card role in the Virtual Chassis.
- C. The EX4300 devices can only assume a line card role in the Virtual Chassis.
- D. Only 10GbE VCP connections can be used between the QFX5100s and the EX4300s.
Answer: A,C
NEW QUESTION 38 
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?
- A. when R2's VNI 5100 configuration is committed
- B. when R2 first learns the MAC address of a locally attached host
- C. when R2 receives broadcast, multicast, or unknown unicast from Host A
- D. when R1 receives a known unicast Ethernet frame from Host A
Answer: C
NEW QUESTION 39
The MC-LAG group shown in the exhibit is providing high availability services for the directly connected servers. The backup liveness detection is applied to the ICL-PL link, however, when one of the members rebooted, there was traffic loss for a few seconds.
In this scenario, where should you apply the backup liveness detection?
- A. on the ae2 interface
- B. on the management interfaces
- C. on the ae1 interface
- D. on the ae0 interface
Answer: B
NEW QUESTION 40
You have deployed two data centers that require a Layer 2 stretch between host1 and host2.
Referring to the exhibit, what does a Layer 2 stretch require?
- A. A VXLAN tunnel originating on VTEP1 to VTEP2
- B. A VPLS WAN connection data centers
- C. A VXLAN tunnel originating on the Spine Layer in DC1 to the Spine Layer in DC2.
- D. A VXLAN tunnel originating on the super Spine Layer in DC1 to the Super Spine Layer in DC2
Answer: A
NEW QUESTION 41
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 an VPN net 0.
Answer: A
NEW QUESTION 42
You have configured MP-IBGP to support EVPN for your overlay network. However, you are not seeing the expected routes on your edge devices.
Referring to the exhibit, how would you solve this problem?
- A. The family evpn signalingparameter must be configured on the remote peer.
- B. The family 12vpn signalingmust be configured on the local peer.
- C. The group types on both devices should be set to external.
- D. Graceful restart must be disabled for this session.
Answer: A
NEW QUESTION 43 
You are deploying MC-LAG as shown in the exhibit.
Which statement is correct when using active/active mode?
- A. VRRP must be used to ensure MAC addresses are shared between peers.
- B. ICCP and block filters are used to avoid Layer 2 loops.
- C. VCCP is used to exchange MAC addresses between MC-LAG peers.
- D. Only ICCP control traffic is allowed through the ICL-PL connection
Answer: B
NEW QUESTION 44
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?
- A. approximately 25%
- B. approximately 66%
- C. approximately 75%
- D. approximately 33%
Answer: B
NEW QUESTION 45
Devices spine1 and spine2 have been configured as distributed Layer 3 gateways in the VXLAN topology, and devices leaf1 and leaf3 have been configured as Layer 2 gateways. Device host1 must be able to communicate with device host2.
Referring to the exhibit, which two statements are true? (Choose two.)
- A. Traffic from host1 to host2 will transit a VXLAN tunnel to spine1 or spine2, then a VXLAN tunnel from spine1 or spine2 to leaf3.
- B. Traffic from host1 to host2 will transit the VXLAN tunnel from leaf1 to leaf3.
- C. An IRS interface must be configured on devices spine1 and spine2.
- D. An IRB interface must be configured on devices leaf1 and leaf2.
Answer: A,C
NEW QUESTION 46
Which EVPN service consists of a single broadcast domain per EVPN instance?
- A. a port-based service interface
- B. a port-based VLAN-aware service interface
- C. a VLAN-based service interface
- D. a VLAN bundle service interface
Answer: C
NEW QUESTION 47
You are configuring an IP Fabric in your data center and you are trying to load-balance traffic across multiple equal-cost BGP routes.
You have enabled multipath, but the traffic is not being load-balanced.
Referring to the exhibit, what will solve this problem?
- A. You should apply the load-balance policy as an import policy for the BGP neighbor.
- B. You should apply the load-balance policy as an export policy to the forwarding table.
- C. You should apply the load-balance policy as an import policy to the forwarding table.
- D. You should apply the load-balance policy as an export policy to the BGP neighbor.
Answer: B
NEW QUESTION 48
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. A layer 3 gateway can be configured on the spine devices.
- B. The VNI assigned to the host1 link must be same as the VNI assigned to the host2 link.
- C. A Layer 3 gateway can be configured on the leaf devices.
- D. The ESI assigned to the host1 link will be different from the ESI assigned to the host link.
Answer: A,C
NEW QUESTION 49
In the exhibit, VM1 is part of the same VXLAN segment as VM3.
Which type of message will VTEP B initially send to the RP so that VM3 can communicate with VM1?
- A. IGMP Join (*, G)
- B. IGMP Join (S,G)
- C. PIM join
- D. PIM register message
Answer: D
NEW QUESTION 50
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