JN0-460題庫更新資訊，JN0-460證照資訊

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Juniper JN0-460 考試大綱：

主題簡介
主題 1
  • Wired Assurance Management or Operations: This section of the exam measures the skills of Network Operations Engineers and focuses on the management and operational aspects of Wired Assurance. It covers switch management, port profiles, and dynamic port configuration to ensure optimal network performance. The section also explores service-level expectations, client insights, and the use of APIs for improved monitoring and automation. Candidates gain an understanding of how MistAI enables proactive management and predictive troubleshooting to maintain service quality.
主題 2
  • Campus Fabric Architecture: This section of the exam measures the skills of Network Design Engineers and focuses on understanding and deploying Campus Fabric Architectures. It introduces essential design concepts such as EVPN multihoming, IP Clos architecture, and micro-segmentation. The section also compares CRB and ERB models, explains scaling requirements, and highlights how the Campus Fabric Core-Distribution design supports high-performance, scalable, and secure enterprise networks.
主題 3
  • Wired Assurance Provisioning or Deployment: This section of the exam measures the skills of Network Deployment Specialists and focuses on the provisioning and deployment processes of Wired Assurance. It includes the essential steps and options involved in setting up networks, from configuration templates to deployment methodologies. Candidates learn about provisioning procedures, supported architectures, and the use of site variables to streamline automation and consistency across wired infrastructures.
主題 4
  • Campus EVPN-VXLAN: This section of the exam measures the skills of Data Center Network Engineers and explores the key principles of VXLAN and EVPN technologies. Candidates learn about Layer 2 tunneling, data and control plane operations, and the functions of VTEPs and VXLAN gateways. Additionally, it covers advanced EVPN concepts such as multipath routing, route types, and identifiers. The section concludes with a focus on MAC learning and policy applications to ensure efficient, scalable, and resilient network fabrics.
主題 5
  • Wired Assurance Fundamentals: This section of the exam measures the skills of Network Support Engineers and covers the foundational elements of Wired Assurance within the MistAI ecosystem. It introduces candidates to key concepts such as supported devices, solution architecture, and the main features and components that define Wired Assurance functionality. Additionally, it highlights how MistAI accounts, analytics, and subscriptions integrate to deliver intelligent insights for network performance and operations.

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最新的 JNCIS-MistAI-Wired JN0-460 免費考試真題 (Q43-Q48):

問題 #43
Which statement is correct about the VXLAN data plane?

答案：C

解題說明：
VXLAN (Virtual Extensible LAN) uses an overlay encapsulation method to carry Layer-2 frames over an IP underlay. This functionality is part of the data plane, which is responsible for packet forwarding and encapsulation/decapsulation.
"In an EVPN-VXLAN fabric, the control plane (via BGP EVPN) learns and advertises MAC and IP information, while the data plane encapsulates and forwards traffic using VXLAN tunnels between VTEPs." Option A is incorrect: IP learning happens in the control plane, not the data plane.
Option B is incorrect: MAC advertisement is done in the control plane through EVPN route types.
Option D is incorrect: MAC learning is handled by EVPN control plane, not the VXLAN data plane.
Option C is correct: the VXLAN data plane encapsulates the traffic in UDP tunnels between VTEPs.
References:
Juniper Mist AI for Wired - EVPN-VXLAN Overview
Juniper Validated Design - EVPN-VXLAN Control and Data Plane Separation Junos OS EVPN-VXLAN Deployment Guide


問題 #44
You want aJuniper cloud-ready switchto connect to theJuniper Mist Cloud.
In this scenario, whichtwo statementsare correct?(Choose two.)

答案：C,D

解題說明：
ForJuniper cloud-ready EX Series switches(EX2300, EX3400, EX4100, EX4400, etc.) to successfully onboard to theJuniper Mist Cloud, specific connectivity requirements must be met:
"Cloud-managed EX switches require outbound connectivity to the Mist Cloud on TCP ports 2200 or 443.
Switches must also have access to DNS services to resolve cloud service URLs during onboarding." Option A:Incorrect - minimum version depends on switch model; older models may onboard with earlier releases (e.g., 20.x, 21.x).
Option B:Correct- outbound TCP 2200 or 443 connectivity is required for cloud registration.
Option C:Incorrect - switches connect directly to Mist Cloud, not the Agile Licensing Portal.
Option D:Correct- DNS resolution is mandatory for discovering Mist Cloud endpoints.
References:
Juniper Mist AI for Wired - Cloud-Ready Switch Onboarding Requirements
Juniper Mist AI for Wired - Network Connectivity and Port Usage
Junos OS Documentation - Mist Cloud Connectivity and Registration


問題 #45
You must ensure that routes within a multitenant domain remain unique when advertised in a service provider network. Which EVPN functionality will accomplish this task?

答案：D

解題說明：
According to Juniper documentation, a route distinguisher (RD) is a critical address qualifier used to ensure that network layer reachability information (NLRI) remains unique within a Multiprotocol BGP (MP-BGP) control plane, especially in multitenant environments. In a service provider network, different tenants may use identical, overlapping private IP address spaces (such as 192.168.1.0/24). If these routes were advertised without a qualifier, BGP-which typically only considers the IP prefix-would treat them as the same route and potentially overwrite one with the other based on standard BGP best-path selection.
The route distinguisher solves this by prepending an 8-byte field to the tenant's IP address, effectively transforming a 32-bit IPv4 prefix into a unique 96-bit VPN-IPv4 address. This 8-byte value is typically configured in formats such as as-number:number or ip-address:number. Because the resulting VPN-IPv4 prefix is unique to that specific routing instance, the service provider's BGP infrastructure can carry and distinguish between overlapping routes from multiple customers simultaneously.
It is important to differentiate the RD from a route target (RT). While the RD's sole purpose is to provide uniqueness so that routes are not discarded or overwritten, the route target is an extended community attribute used to control the import and export of these routes into the correct virtual routing and forwarding (VRF) tables on remote PE routers. In Juniper's Junos OS, each routing instance of type vrf or evpn must have a unique RD associated with it; failing to configure a unique RD or attempting to use the same RD across different instances will result in a configuration commit failure. This fundamental separation of "making routes unique" (RD) and "directing routes to the right place" (RT) allows for the scalable, isolated multitenancy required in modern EVPN-VXLAN campus and data center fabrics.


問題 #46
Where should you activate and manage your Mist subscriptions?

答案：A


問題 #47
You must move from acampus fabric core-distribution centrally-routed bridging (CRB)network to anedge- routed bridging (ERB)network.
In this scenario, where does thegateway for the networkmove?

答案：D

解題說明：
In Juniper Mist campus fabric architectures, thelocation of the Layer 3 gateway (IRB interface) differentiatescentrally-routed bridging (CRB)fromedge-routed bridging (ERB):
InCRB, thegateway resides at the core layer- routing occurs centrally, and access/distribution layers perform Layer 2 bridging.
InERB, thegateway moves to the edge (distribution layer), enabling routing to occur closer to endpoints, improving performance and scalability.
"In a centrally-routed bridging (CRB) topology, Layer 3 gateways reside at the core. When transitioning to an edge-routed bridging (ERB) design, the Layer 3 gateways are moved to the distribution layer, closer to the access switches and clients." Therefore, when moving from acore-distribution CRBto anERBmodel, thegateway moves from the distribution to the access layerin campus terms (edge = access).
Option A:Incorrect - ERB gateways are not at the distribution layer only.
Option B:Incorrect - opposite direction.
Option C:Correct- the gateway movesfrom distribution to access (edge).
Option D:Incorrect - this describes CRB, not ERB.
References:
Juniper Mist AI for Wired - Campus Fabric Architecture Models (CRB vs ERB) Juniper Validated Design - Campus Fabric EVPN-VXLAN Gateway Placement Junos OS EVPN-VXLAN Deployment Guide


問題 #48
......

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