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Juniper JN0-683 考試大綱：

主題	簡介
主題 1	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.
主題 2	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.
主題 3	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.
主題 4	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.
主題 5	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.

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最新的 JNCIP-DC JN0-683 免費考試真題 (Q54-Q59):

問題 #54
You are asked to automatically provision new Juniper Networks devices in your network with minimal manual intervention Before you begin, which two statements are correct? (Choose two.)

A. You must have a DHCP server that provides the location of the software image and configuration files.
B. You must have an NTP server to perform time synchronization.
C. You must have a system log (syslog) server to manage system log messages and alerts.
D. You must have a file server that stores software image and configuration files.

答案：A,D

解題說明：
* Zero-Touch Provisioning (ZTP):
* ZTP is a feature that allows for the automatic provisioning of devices with minimal manual intervention. It is widely used in large-scale deployments to quickly bring new devices online.
* Key Requirements for ZTP:
* A. DHCP Server:A DHCP server is crucial for ZTP as it provides the necessary information to new devices, such as the IP address, the location of the software image, and configuration files.
* D. File Server:The file server is where the software image and configuration files are stored. The device downloads these files during the provisioning process.
* Incorrect Options:
* B. Syslog Server:While a syslog server is important for logging and monitoring, it is not a requirement for the initial provisioning process.
* C. NTP Server:An NTP server is used for time synchronization, which is essential for accurate logging and operation but not specifically required for ZTP.
Data Center References:
* ZTP simplifies the deployment process by automating the initial configuration steps, relying heavily on DHCP for communication and a file server for delivering the necessary configuration and software.

問題 #55
Click the Exhibit button.

Referring to the configuration shown in the exhibit, assume that there is no external router present and that the configuration is fabric-only.
Which two statements are true about the example configuration? (Choose two.)

A. Devices in routing instance Customer A are able to communicate with devices in routing instance Customer B.
B. VNI 10006 is assigned to vlan 800 (irb.800).
C. Devices in irb.400 (vlan 400) are not able to communicate directly with devices in routing instance Customer A.
D. Devices in irb.400 (vlan 400) and irb.800 (vlan 800) are able to communicate over the fabric.

答案：C,D

解題說明：
The exhibit shows configurations for two VRFs (Customer_A and Customer_B) with specific VLANs and VNIs assigned. Each VRF has interfaces (IRBs) associated with particular VLANs.
Option B: VLAN 400 (irb.400) is part of Customer_B, and there is no direct connection or routing between Customer_A and Customer_B in the configuration provided. Therefore, devices in irb.400 cannot communicate directly with devices in the Customer_A routing instance.
Option D: Since irb.400 (VLAN 400) and irb.800 (VLAN 800) are part of the same routing instance (Customer_B), they can communicate over the fabric using VXLAN encapsulation.

問題 #56
Your company asks you to create a network in one of its data centers specifically for supporting AI or ML workloads. You have chosen to use lossless Ethernet.
In this scenario, which statement about Juniper Networks' best practices for Ethernet networks that support RDMA AI/ML traffic is correct?

A. Enable ETS on the GPU facing interfaces.
B. Modify the load balancing default hashing.
C. Disable LLDP on interfaces that use DCBX
D. Assign all shared buffers to the lossless queues.

答案：A

解題說明：
In a lossless Ethernet network designed for AI/ML workloads using RDMA (Remote Direct Memory Access), Enhanced Transmission Selection (ETS) is a key feature that helps allocate bandwidth dynamically among different traffic classes, ensuring that AI/ML traffic is prioritized without starving other types of traffic. Juniper Networks' best practices recommend enabling ETS on interfaces connecting to GPU servers to ensure proper bandwidth allocation and prevent congestion.

問題 #57
You are configuring an EVPN-VXLAN fabric with an edge-routed bridging (ERB) overlay. Where does Layer 3 routing occur in this architecture?

A. At a centralized route reflector.
B. At the server leaf (top-of-rack) devices.
C. At the spine devices only.
D. At the border leaf devices only.

答案：B

解題說明：
In an edge-routed bridging (ERB) overlay, the integrated routing and bridging (IRB) interfaces and Layer 3 gateway functionality are placed directly on the server leaf devices, moving routing as close to the endpoints as possible. This reduces the need to hairpin traffic through the spine and improves east-west traffic efficiency compared to a centrally-routed bridging (CRB) design.

問題 #58
You are deploying an IP fabric using EBGP and notice that your leaf devices are advertising 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.)

A. You need to configure loops 2.
B. You need to configure as-override.
C. You need to configure a next-hop self policy.
D. You need to configure multipath multiple-as.

答案：A,D

問題 #59
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