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Juniper JN0-683 Prüfungsplan:

ThemaEinzelheiten
Thema 1
  • Data Center Multitenancy and Security: This section tests knowledge of single-tenant and multitenant data center setups. Candidates such as Data Center Professionals are evaluated on ensuring tenant traffic isolation at both Layer 2 and Layer 3 levels in shared infrastructure environments.
Thema 2
  • 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 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.

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JN0-683 Fragen Und Antworten - JN0-683 Prüfungs

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Juniper Data Center, Professional (JNCIP-DC) JN0-683 Prüfungsfragen mit Lösungen (Q78-Q83):

78. Frage
Your organization is implementing EVPN-VXLAN and requires multiple overlapping VLAN-IDs.
You decide to use a routing-instance type mac-vrfto satisfy this request.
Which two statements are correct in this scenario? (Choose two.)

Antwort: B,C

Begründung:
Host-facing interfaces must be configured using a service-provider style configuration When using MAC-VRF routing instances to support overlapping VLAN IDs, host-facing interfaces need service-provider style (unit with VLAN tagging inside a logical interface). This allows the same VLAN ID to exist in multiple VRFs without conflict.
The routing-instance service type can be VLAN-based
MAC-VRF instances can be VLAN-based, which maps a VLAN to the routing instance for L2 segregation.


79. Frage
You are asked to interconnect two data centers using a method that provides EVPN Type 2 connectivity, is highly scalable, and limits VXLAN tunnels between border leaf devices.
What will satisfy these requirements?

Antwort: B

Begründung:
Type 2 seamless stitching is the best solution for interconnecting two data centers while providing EVPN Type 2 connectivity (MAC/IP routes for end-host reachability), high scalability, and limiting VXLAN tunnels between border leaf devices. This method ensures that MAC addresses are properly learned and distributed across the two data centers without requiring a full mesh of VXLAN tunnels between all leaf switches. Instead, VXLAN tunnels are limited to border leaf devices, reducing the complexity and improving scalability.


80. Frage
You are deploying an IP fabric using EBGP and notice that your leaf devices areadvertising and receiving all the routes. However, the routes are not installed in the routing table and are marked as hidden.
Which two statements describe how to solve the issue? (Choose two.)

Antwort: B,D

Begründung:
* Issue Overview:
* The leaf devices in an IP fabric using eBGP are advertising and receiving all routes, but the routes are not being installed in the routing table and are marked as hidden. Thistypically indicates an issue with the BGP configuration, particularly with next-hop handling or AS path concerns.
* Corrective Actions:
* B. You need to configure a next-hop self policy:This action ensures that the leaf devices modify the next-hop attribute to their own IP address before advertising routes to their peers. This is particularly important in eBGP setups where the next-hop may not be directly reachable by other peers.
* D. You need to configure multipath multiple-as:This setting allows the router to accept multiple paths from different autonomous systems (ASes) and use them for load balancing.
Without this, the BGP process might consider only one path and mark others as hidden.
* Incorrect Statements:
* A. You need to configure as-override:AS-override is used to replace the AS number in the AS- path attribute to prevent loop detection issues in MPLS VPNs, not in a typical eBGP IP fabric setup.
* C. You need to configure loops 2:There is no specific BGP command loops 2 relevant to resolving hidden routes in this context. It might be confused with allowas-in, which is used to allow AS path loops under certain conditions.
Data Center References:
* Proper BGP configuration is crucial in IP fabrics to ensure route propagation and to prevent routes from being marked as hidden. Configuration parameters like next-hop self and multipath multiple-as are common solutions to ensure optimal route installation and load balancing in a multi-vendor environment.


81. Frage
You are implementing VXLAN broadcast domains in your data center environment. Which two statements are correct in this scenario? (Choose two.)

Antwort: B,D

Begründung:
Layer 2 frames are encapsulated by the source VTEP: In a VXLAN environment, Layer 2 frames (Ethernet frames) are encapsulated by the source VTEP (VXLAN Tunnel Endpoint) into VXLAN packets. The VTEP adds a VXLAN header to the original Layer 2 frame and forwards the encapsulated packet over the IP network to the destination VTEP.
A VXLAN packet does not contain a VLAN ID: VXLAN operates at Layer 2 and encapsulates Ethernet frames within a VXLAN header, but it does not carry a traditional VLAN ID as part of the encapsulated packet. Instead, it uses a VXLAN Network Identifier (VNI) to identify the broadcast domain.


82. Frage
You are preparing an sFlow monitoring system configuration. In this scenario, what information will be included in the datagram sent to the sFlow collector? (Choose two.)

Antwort: A,D

Begründung:
An sFlow datagram includes packet sample information with ingress interface details so the collector can identify where the sampled traffic entered the device. It also carries Layer 2 header information from the sampled frame, which includes VLAN tags, allowing the collector to determine the source and destination VLAN associated with the sampled traffic.


83. Frage
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