Free Juniper JN0-460 Practice Exam with Questions & Answers | Set: 2

RadSec(RADIUS over TLS) enhances traditional RADIUS authentication security by encapsulating RADIUS messages withinTCP and TLSinstead of UDP.

This ensures encrypted, reliable, and authenticated transmission between network devices (such as Juniper EX switches) and RADIUS servers.

It is often used in modernMist-managed wired networksto securely integrate withAccess Assuranceor external authentication systems.

Juniper Mist AI for Wired uses group-based policy (GBP) to enforce segmentation within a single VRF, without requiring separate VRFs per user group. GBP tags classify endpoints logically (e.g., employees, guests, IoT devices) and enforce security rules across the EVPN-VXLAN fabric.

“Group-Based Policy (GBP) provides scalable segmentation by assigning tags to endpoints based on attributes such as user type, role, or device type. These GBP tags are then used in policies to control communication between groups.”

Option A is inefficient: assigning unique tags per endpoint is not scalable.

Option C is incorrect: GBP is identity-based segmentation, not location-based.

Option D is incorrect: assigning a single tag defeats the purpose of segmentation.

Option B is correct: the best practice is to assign GBP tags based on endpoint type (e.g., servers, staff, IoT, guests), which then drives policy enforcement.

Juniper Mist Cloud uses anopen RESTful API frameworkfor integration, automation, and programmability across all Mist services, includingWired Assurance,Marvis, andAI-driven automation.

“All Mist Cloud services are built on a 100% open REST API framework, allowing customers to automate configuration, monitoring, and troubleshooting through standard REST calls.”

The REST API exchanges data inJSONformat, but the API type itself isREST, not JSON.

Option A (REST):Correct— Mist services expose 100% REST-based APIs.

Option B (SOAP):Incorrect — SOAP is an older XML-based protocol not used in Mist.

Option C (JSON):Incorrect — JSON is thedata format, not the API type.

Option D (RPC):Incorrect — not used in the Mist Cloud architecture.

According to theJuniper Mist AI for Wired – Campus Fabric IP Clos Deployment Workflow, deploying a campus fabric involves a defined sequence of planning and configuration steps within the Mist Cloud interface. The key stages include:

“To deploy a campus fabric, you must first define the topology type, identify the physical connections between devices, and define the networks of interest that will be extended across the fabric.”

Breaking this down:

Choose the topology (D):Selecting the correct fabric type (3-Stage or 5-Stage IP Clos) determines how access, distribution, and core switches will interconnect.

Define the physical connections (A):This step involves specifying the uplink and downlink relationships between switches so that Mist can auto-generate EVPN-VXLAN and routing configurations.

Define the networks of interest (B):These are the VLANs and subnets that need to be extended across the fabric for user and device connectivity.

Steps such asconfiguring DNS serversordefining GBP tagsarenot part of the campus fabric deployment workflowin Mist Wired; they are optional or separate configurations outside the main deployment flow.

Comprehensive and Detailed Explanation From Exact Extract:

InEVPN-VXLANarchitectures, theVXLAN Tunnel Endpoint (VTEP)is the logical interface responsible for encapsulating and de-encapsulating Layer 2 Ethernet frames into VXLAN packets.

Each participating switch — typically the access or distribution node — hosts aVTEPthat maps local VLANs to VXLAN Network Identifiers (VNIs).

When a packet leaves a local VLAN, the VTEP encapsulates it in a VXLAN header and routes it through the underlay IP fabric.

When received at the destination VTEP, the frame is de-encapsulated and delivered to the appropriate local VLAN.

“VTEPs in an EVPN-VXLAN campus fabric perform MAC-to-VNI mapping and encapsulate/decapsulate traffic between virtualized network segments, allowing seamless Layer 2 and Layer 3 connectivity across an IP underlay.”

According to Juniper Mist documentation, the Throughput Service Level Expectation (SLE) is the primary metric used to represent the ability of wired users to pass traffic across the network without impedance. This SLE provides a comprehensive oversight of network performance by identifying issues that degrade the user experience, such as storm control events, interface anomalies, and specifically uplink congestion.

Within the Throughput SLE, the Congestion classifier (also referred to as Congestion Uplink) is specifically designed to monitor for buffer saturation and packet drops (TxDrops). When traffic arriving at an interface exceeds its processing or forwarding capacity, packets are queued in a buffer; if this buffer becomes full, the switch begins dropping packets. Juniper Mist utilizes a specific formula considering the ratios of TxDrops to TxPackets, Transmitted bps to Link Speed, and Received Speed to Link Speed to determine if a "Bad User Minute" has occurred due to congestion.

A critical feature of Wired Assurance is the automatic identification of uplink interfaces. Mist identifies these high-capacity ports by analyzing switch telemetry for characteristics such as having a switch or router as an LLDP neighbor, being designated as a Spanning Tree Protocol (STP) root port, or exhibiting significantly higher packet counts compared to access ports. When congestion is detected on an interface identified as an uplink, the system recognizes that this bottleneck impacts every user on that switch. By correlating these drops with the Throughput SLE, network administrators can proactively identify when a site requires more bandwidth or a different fabric architecture to handle current traffic demands, rather than simply monitoring if the link is physically "up" or "down".

When deployingJuniper Mist Wired AssuranceinManaged mode, switches are fully integrated with Mist Cloud for configuration, monitoring, and AI-driven operations. Managed mode providescomplete cloud-based management, meaning Mist AI handles configuration, templates, telemetry, and SLE tracking.

“In Managed mode, the switch configuration is fully managed by Mist Cloud. Administrators configure switches, templates, and policies directly through the Mist dashboard. A valid Wired Assurance subscription is required for Managed mode operation.”

Option A:Incorrect — the “Monitor Only” mode is read-only, not Managed.

Option B:Correct— Managed mode requires aWired Assurance subscription.

Option C:Incorrect — subscriptions are mandatory for Mist-managed devices.

Option D:Correct— in Managed mode,all supported EX switches are fully managed by Mist AI, including configuration and telemetry.

In Mist,sitesrepresent the physical or logical grouping of devices within an organization.

You create and manage a site configuration under theLocationhierarchy in the Mist UI.

Each site inherits organization-level settings but can override or customize specific configurations such as VLANs, templates, or switch settings.

Group-Based Policy (GBP)is a Juniper EVPN-VXLAN feature that enablesmicrosegmentationwithout requiring multiple VRFs or VLANs. It is implemented within Juniper Mist’sWired Assurance and Campus Fabricframeworks.

“GBP provides scalable, identity-based segmentation for campus fabrics and is supported on EX4100 and EX4400 Series switches operating in EVPN-VXLAN mode under Mist management.”

The feature requires hardware and software support forEVPN-VXLAN and GBP tagging, which is currently available on specific EX models managed by Mist Cloud.

Option A:Correct— GBP requires compatible access switches, specifically EX4100 and EX4400 models.

Option B:Incorrect — GBP is centrally managed through Mist Cloud, not configured per switch.

Option C:Incorrect — GBP is provisioned via Mist Cloud, not the CLI.

Option D:Incorrect — GBP is not supported onallEVPN-capable switches; only on defined platforms (EX4100/EX4400).

When a switch is successfully onboarded into Mist Cloud but shows“Unassigned,”it means the device has been claimed into the organization but hasnot yet been assigned to a specific site.

“After claiming switches into an organization, you must assign each switch to a site for it to transition from Unassigned to Connected state and begin receiving configuration and telemetry updates.”

Option A:Incorrect — rescanning is not needed once the device is claimed.

Option B:Incorrect — reboots are unnecessary for assignment recognition.

Option C:Incorrect — these commands are for connectivity troubleshooting, not site assignment.

Option D:Correct— assigning each switch to itsintended siteenables full Mist management and connectivity state.