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Juniper JN0-683 Exam Syllabus Topics:

SectionObjectives
Data Center Interconnect- DCI Concepts
  • 1. EVPN-signaled VXLAN for DCI
  • 2. Interconnect network types
  • 3. Layer 2 and Layer 3 stretch
  • 4. Stitching
- Configuration and Troubleshooting
  • 1. Configuring, monitoring, or troubleshooting DCI
Data Center Deployment and Management- Data Center Deployment Concepts
  • 1. Dynamic Host Configuration Protocol (DHCP)
  • 2. Zero-touch provisioning (ZTP)
- Data Center Management Concepts
  • 1. Monitoring
  • 2. Analytics (telemetry)
Data Center Multitenancy and Security- Architectures
  • 1. Single tenant and multitenant architectures
  • 2. Tenant traffic isolation (Layer 3 or Layer 2)
  • 3. Multitenancy (for example, routing instances)
- Security Concepts
  • 1. Group-based policy (GBP)
  • 2. Filter-based forwarding
EVPN-VXLAN Signaling- Configuration and Troubleshooting
  • 1. Configuring, monitoring, or troubleshooting EVPNs
- EVPN Concepts
  • 1. MAC learning
  • 2. EVPN multicast
  • 3. EVPN architectures (CRB and ERB)
  • 4. Route types
  • 5. Symmetric routing
  • 6. Multiprotocol BGP (MBGP)
Layer 3 Fabrics- IP Fabric Concepts
  • 1. IP fabric best practices
  • 2. IP fabric architecture
  • 3. IP fabric scaling
  • 4. IP fabric Class of Service (RDMA/RoCE)
  • 5. IP fabric routing
- Configuration and Troubleshooting
  • 1. Configuring, monitoring, or troubleshooting an IP fabric
VXLAN- Configuration and Troubleshooting
  • 1. Configuring, monitoring, or troubleshooting VXLAN
- VXLAN Concepts
  • 1. VXLAN control planes
  • 2. Data plane

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Juniper Data Center, Professional (JNCIP-DC) Sample Questions (Q70-Q75):

NEW QUESTION # 70
Exhibit.

Referring tothe exhibit, which statement is correct?

Answer: D

Explanation:
* Analyzing the Exhibit Output:
* The command ping overlay tunnel-type vxlan is used to test the VXLAN tunnel between two VTEPs (VXLAN Tunnel Endpoints). The output shows a warning about missing hash parameters, but more importantly, it displays the result: End-System Not Present.
* Understanding the Response:
* The message End-System Not Present indicates that the remote VTEP (192.168.2.20) did not find the MAC address 00:00:5E:00:53:CC in its forwarding table. This typically means that the MAC address is unknown to the remote VTEP, and as a result, it could not forward the packet to the intended destination.
Conclusion:
* Option B:Correct-The MAC address is unknown and is not in the forwarding table of the remote VTEP, which is why the system reports that the "End-System" is not present.


NEW QUESTION # 71
Click the Exhibit button.

You are reviewing a configuration for an EVPN VLAN-bundle service. The configuration commits successfully, but the hosts connected to the MAC-VRF do not communicate correctly.
Referring to the exhibit, which two actions should you take to solve the problem? (Choose two.)

Answer: B,C

Explanation:
An EVPN VLAN-bundle service requires the routing instance service type to be set to VLAN- bundle so multiple VLANs can be mapped into a single bundled service. VLAN-bundle is a Layer
2 EVPN service and is not meant to have an IRB attached inside the MAC-VRF, so the IRB interface association must be removed to restore correct host-to-host bridging behavior.


NEW QUESTION # 72
Click the Exhibit button.

The 192.168.0.0/24 route is being advertised into your IP fabric by the leaf devices in AS 65511 and AS 65512. Both spine devices receive the routes from each of the leaf devices.
In this scenario, which two statements are correct? (Choose two.)

Answer: A,B

Explanation:
The two advertisements for the same prefix arrive with different next hops, but the default BGP behavior in Junos is to select a single best path for installation; additional paths are not kept as usable next hops unless multipath is explicitly enabled, so the nonselected next hop is not used.
Also, Junos will not advertise routes to BGP peers unless an export policy explicitly permits them; when it does export, it advertises only the selected active route, not multiple equal candidates.


NEW QUESTION # 73
What are three actions available for MAC move limiting? (Choose three.)

Answer: B,C,D

Explanation:
MAC move limiting is a security feature used in network switches to detect and mitigate rapid changes in MAC address locations, which could indicate a network issue or an attack such as MAC flapping or spoofing.
When a MAC address is learned on a different interface than it was previously learned, the switch can take various actions to prevent potential issues.
drop: This action drops packets from the MAC address if it violates the move limit, effectively blocking communication from the offending MAC address.
log: This action logs the MAC move event without disrupting traffic, allowing network administrators to monitor and investigate the event.
shutdown: This action shuts down the interface on which the MAC address violation occurred, effectively stopping all traffic on that interface to prevent further issues.


NEW QUESTION # 74
Given the configuration shown in the exhibit, why has the next hop remained the same for the EVPN routes advertised to the peer 203.0.113.2?

Answer: B

Explanation:
The vpn-apply-export parameter must be applied to this peer: In the given configuration, the policy statement CHANGE_NHis defined to change the next-hop IP for routes. However, the vpn- apply-exportparameter is missing, which is necessary for applying export policies to routes associated with a particular VPN. Without this parameter, the export policy does not apply to the EVPN routes, and thus the next-hop remains unchanged.


NEW QUESTION # 75
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