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Juniper JN0-683 Prüfungsplan:

ThemaEinzelheiten
Thema 1
  • EVPN-VXLAN Signaling: This section assesses an understanding of Ethernet VPN (EVPN) concepts, including route types, multicast handling, and Multiprotocol BGP (MBGP). It also covers EVPN architectures like CRB and ERB, MAC learning, and symmetric routing.
Thema 2
  • VXLAN: This part requires knowledge of VXLAN, particularly how the control plane manages communication between devices, while the data plane handles traffic flow. Demonstrate knowledge of how to configure, Monitor, or Troubleshoot VXLAN.
Thema 3
  • Data Center Deployment and Management: This section assesses the expertise of data center networking professionals like architects and engineers, focusing on key deployment concepts. Topics include Zero-touch provisioning (ZTP), which automates device setup in data centers without manual input.
Thema 4
  • Data Center Interconnect: For Data Center Engineers, this part focuses on interconnecting data centers, covering Layer 2 and Layer 3 stretching, stitching fabrics together, and using EVPN-signaled VXLAN for seamless communication between data centers.
Thema 5
  • Layer 3 Fabrics: This section measures the knowledge of professionals managing IP-based networks in data centers. It covers IP fabric architecture and routing, ensuring candidates understand how the network is structured for scalability and how traffic is routed efficiently.

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Juniper Data Center, Professional (JNCIP-DC) JN0-683 Prüfungsfragen mit Lösungen (Q12-Q17):

12. Frage
Exhibit.

Both DC and DC2 ate using EVPN-VXLAN technology deployed using an ERB architecture. A server on the Red VLAN must communicate with a server on the Green VLAN. The Blue VLAN in DC and DC2 needs to be the same VLAN.
Which statement is correct in this scenario?

Antwort: C

Begründung:
* ERB Architecture in EVPN-VXLAN:
* ERB (Edge Routed Bridging) architecture is commonly used in data center networks where routing decisions are made at the network edge (leaf or border devices), while bridging (Layer 2 forwarding) is extended across the fabric. This architecture allows for efficient L3 routing while still enabling L2 services like VLANs to span across multiple locations.
* VLAN and VNI Configuration:
* The scenario specifies that a server on the Red VLAN needs to communicate with a server on the Green VLAN. Since these VLANs are in different data centers (DC and DC2), and given the use of EVPN-VXLAN, the communication between these VLANs will require atransit VNI(Virtual Network Identifier). This transit VNI will allow traffic to traverse the VXLAN tunnel across the DCI (Data Center Interconnect).
* Interconnect between SRX Series Devices:
* The exhibit shows SRX Series Chassis Clusters used as service devices (likely for firewalling or other security services). These devices need to be interconnected between the two data centers to ensure that VLANs can communicate effectively. The Blue VLAN needs to be stretched between DC and DC2 to maintain the same Layer 2 domain across both data centers.
Conclusion:
* Option B:Correct-Interconnecting the SRX Series devices will ensure the necessary service chaining, while stretching the Blue VLAN and adding a transit VNI for the Red and Green VLANs will enable the required communication across the data centers.


13. Frage
Which two statements are true about IP fabrics using unnumbered BGP? (Choose two.)

Antwort: B,D

Begründung:
BGP unnumbered peering uses only link-local IPv6 addresses on interfaces to automatically discover and establish BGP peer sessions. No routable IP addresses are required on the underlay interfaces.
You must configure the interfaces with family inet6 to enable the link-local IPv6 addresses used for peering.
The BGP peering session is dynamically created based on interface names, which simplifies the configuration significantly compared to manual peering with routable IP addresses.
The peer IP and remote AS numbers are automatically configured for BGP unnumbered peering.
This means unnumbered BGP automatically provisions IPv6 peering using the link-local addresses.
It also supports IPv4 route exchange over the IPv6 next-hop established by unnumbered BGP.
https://www.juniper.net/documentation/us/en/software/nce/nce-225-bgp-unnumbered/index.html


14. Frage
You are designing a DCI solution and want to prevent the extension of BUM traffic and Ethernet Segment information between data centers while still allowing IP prefix reachability. Which EVPN seamless stitching type should you use?

Antwort: D

Begründung:
When only Layer 3 reachability between data centers is desired, and Layer 2 extension along with associated BUM traffic and Ethernet Segment routes should not cross the DCI, a Type 5 (IP Prefix route) only interconnect is used. Border leaf devices exchange only EVPN Type 5 routes across the DCI, providing inter-subnet routing between data centers while keeping each data center's Layer 2 broadcast domain isolated.


15. Frage
Referring to the exhibit, which statement is true?

Antwort: D

Begründung:
The configuration provided in the exhibit indicates an EVPN-VXLAN setup with routing instances, VLANs, and associated VXLANs. Specifically, there are routing instances with IRB interfaces (Integrated Routing and Bridging) and associated VLANs, as well as VNI assignments, which are key elements in an Enhanced Routed Bridging (ERB) architecture. This architecture supports both Layer 2 and Layer 3 connectivity with VXLAN for bridging and routing.


16. Frage
You are asked to configure active probes to track and monitor reachability across the network and investigate network issues. In this scenario, which feature would accomplish this task?

Antwort: B

Begründung:
RPM (Real-Time Performance Monitoring) uses active probes such as ICMP or UDP to measure reachability, latency, jitter, and packet loss across the network. It actively generates test traffic, making it suitable for tracking connectivity and troubleshooting network performance issues.


17. Frage
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JN0-683 Prüfungsaufgaben: https://www.it-pruefung.com/JN0-683.html

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