Latest Jan 16, 2022 JN0-681 Brain Dump: A Study Guide with Tips & Tricks for passing Exam
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NEW QUESTION 20
You have an EBGP-based IP Fabric.
Why do you need an export policy on each leaf in this scenario?
- A. to advertise local routes with the router reflector
- B. to advertise local server-facing IP prefix
- C. to ensure a full mesh is formed between peers
- D. to accept remote server-facing IP prefixes
Answer: B,D
NEW QUESTION 21
You have an EBGP-based IP Fabric.
Why do you need an export policy on each leaf in this scenario?
- A. to advertise local routes with the router reflector
- B. to accept remote server-facing IP prefixes
- C. to advertise local server-facing IP prefix
- D. to ensure a full mesh is formed between peers
Answer: C
NEW QUESTION 22
Referring to the VTEP output shown in the exhibit, which two statements are true? (Choose two.)
- A. The MAC address 52:54:00 2c 4b:a2 belongs to a local host.
- B. The MAC address 52:54;00 5e 88 6a belongs to a local host.
- C. The MAC address 52:54:00 2c 4b:a2 belongs to a remote host.
- D. The. MAC address 52:54:00 5e 88 6a belongs to a remote host.
Answer: C,D
NEW QUESTION 23
You are configuring VXLAN on a network of QFX5100s, and are using the set vlans vlan100 vxlan unreachable-vtep-aging-timer 600 command.
What does this command do?
- A. This command ages out the address of the remote VTEP 600 seconds after the last learned MAC address expires.
- B. This command ages out a locally learned MAC address assigned to the VTEP after 600 seconds of inactivity.
- C. This command ages out all learned MAC addresses assigned to the VTEP after 600 seconds of inactivity.
- D. This command ages out a remotely learned VTEP address after 600 seconds of inactivity.
Answer: A
NEW QUESTION 24
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. as-override
- D. multipath multiple-as
Answer: C
NEW QUESTION 25
You are using IBGP to deploy an IP fabric. There are four spine devices, two of which are configured as route reflectors. You notice that the other two spines are not receiving all the possible paths to each leaf, and traffic cannot be load-balanced to the leaf devices.
Which two actions will resolve this problem? (Choose two.)
- A. Configure the multihop parameter on the route reflectors.
- B. Configure the add-path parameter on the leaf devices.
- C. Configure the add-path parameter on the route reflectors.
- D. Configure the multipath parameter on the route reflectors.
Answer: B,C
NEW QUESTION 26
Which two statements describes an IP fabric? (Choose two.)
- A. Each leaf should have a connection to each spine.
- B. xSTP protocols should be used to prevent loops
- C. Traffic should always follow a single path
- D. Open standards allow for vendor interoperability.
Answer: A,D
NEW QUESTION 27
Referring to the exhibit, what would cause the problem on VCP 0/50?
- A. VCP 0/50 is configured as a network port.
- B. The port is missing the interface hardware
- C. The VCP has been disabled through configuration
- D. The remote side is not configured as a VCP
Answer: C
NEW QUESTION 28
You are designing an EBGP IP fabric for a multi-side 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 29
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 30 
Which statement is valid for EVPN multihoming CE1 to PE1 and PE2 as shown in the exhibit?
- A. The PEs must be manually configured for the ESI value on the interfaces attached to the CEs.
- B. CE1 must have LACP enabled on the interfaces attached to the PEs.
- C. CE1 must have the MAC mobility extended community enabled in BGP on both the CE and PEs.
- D. The PEs use BPDU autodiscovery by enabling STP on the interfaces attached to CE1.
Answer: A
NEW QUESTION 31
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. There is no route for 192.168.5.5 in inet.3.
- B. The route-distinguishervalue on the local PE is incorrect.
- C. The vrf-table-labelvalue is not configured in the remote PE.
- D. There is no route for 192.168.5.5 in VPN.inet.0.
Answer: C
NEW QUESTION 32
You are deploying 50 QFX5100 switches in your data center. You are asked to explain the benefits of using ZTP during your deployment of these devices.
What is a benefit of this deployment?
- A. You must use DHCP options to provide the transfer mode used for pulling files from a storage server.
- B. You can use DHCP options to push the configuration files to all devices.
- C. You must use DHCP options to provide Junos installation packages to all devices.
- D. You can use DHCP options to indicate which Junos version the switches should be running.
Answer: A
NEW QUESTION 33
What happens when a packet is encapsulated by a VXLAN before being placed in the overlay?
- A. The QoS marketing are placed in the VXLAN header.
- B. A VNI that maps to the VLAN-ID placed in the VXLAN header.
- C. The TTL is decremented by two and placed in the VXLAN header.
- D. The VLAN-ID is placed in the VXLAN header.
Answer: B
NEW QUESTION 34
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 35
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 36
You are establishing an IP Fabric where your QFX10002-72Q spine devices are connecting to leaf devices. Each leaf is a Virtual Chassis comprised of ten EX4300s.
What is the maximum number of leaf devices supported in this scenario?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
NEW QUESTION 37
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. There is no route for 192.168.5.5 in inet.3.
- B. The route-distinguishervalue on the local PE is incorrect.
- C. The vrf-table-labelvalue is not configured in the remote PE.
- D. There is no route for 192.168.5.5 in VPN.inet.0.
Answer: C
NEW QUESTION 38
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 39
Which two technologies provide Layer 2 services across data centers in two remote locations? (Choose two.)
- A. VPLS
- B. MSDP
- C. L3VPN
- D. EVPN
Answer: A,D
NEW QUESTION 40
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.
- B. Spine nodes only peer to leaf nodes.
- C. Leaf nodes peer to both spine and leaf nodes.
- D. Leaf nodes only peer to spine nodes.
Answer: B,D
NEW QUESTION 41
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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.
Exam Outline
Overall, there are 65 multiple-choice questions in the official exam that you need to finish within 120 minutes. Immediately after you take the real test, the exam results will be available for you. To add more, Pearson VUE inspects all Juniper exams including JN0-681. Passing such a test will earn you the JNCIP-DC designation, for which you are required to meet the following exam goals:
- Define the implementation of data architecture and protection within Junos OS.
- Capability to incorporate multicast IP functionality.
- Understanding how a Multichassis LAG operates.
- Grasping the operations of Layer 2 Fabric and IP Fabric.
- Describe the EVPN VXLAN signaling principles.
- Detail Data Centre Interconnect principles (DCI).
- Describe the Data Center Management and Deployment principles and their functionalities.
- Describe the Virtual Extensible LAN features (VXLAN).
Career Benefits
The JNCIP-DC certification most generally leads to network engineering positions, either directly with Juniper Networks or with product management consulting firms. In particular, you can apply for positions such as a Data Center Systems Administrator and Network Data Center Engineer. As for the salaries, average earnings for Data Center Systems Administrator are estimated at $65,000 annually while Network Data Center Engineer can get as much as $72,000 per year as it’s stated by Glassdoor.com.
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