✅ Option C (Correct) Reasoning: Wired Assurance subscriptions support Juniper Mist-managed EX Series switches available in 12-port (e.g., EX2300-C), 24-port (e.g., EX2300, EX3400, EX4100), and 48-port (e.g., EX3400, EX4300, EX4400) configurations.
❌ Why the other choices are incorrect:

Option A is incorrect: Subscriptions also include 12-port and 48-port Juniper Mist switches, making this option too limited.

Option B is incorrect: This option omits 48-port switches, which are fully supported by Mist Wired Assurance subscriptions.

Option D is incorrect: This choice is overly restrictive as 24-port and 48-port Juniper Mist switches also have available subscriptions.

✅ Option C (Correct) Reasoning: A Mist AI 5-stage IP Clos network is a hierarchical network architecture commonly used in campus fabrics. It consists of multiple layers of leaves and spines, which functionally map to access, distribution, and core layers, providing a highly scalable and resilient underlay for modern campus networks.❌ Why the other choices are incorrect:

Option A is incorrect: An IP Clos network describes a network topology or architecture, not a routing protocol. Routing protocols operate within this architecture.

Option B is incorrect: EVPN tunnel encapsulation is a control plane technology used for overlay routing, typically over an IP Clos underlay. An IP Clos network is the underlay physical/logical topology itself.

Option D is incorrect: VXLAN tunnel encapsulation is a data plane technology used for overlay routing, typically over an IP Clos underlay. An IP Clos network is the underlay physical/logical topology.

✅ Option B (Correct) Reasoning: The Juniper Mist AI-driven Wired Assurance, which includes the Switch Insights feature, is specifically designed and supported for Juniper EX Series switches, making it exclusively available for this series of switches.
❌ Why the other choices are incorrect:

Option A is incorrect: While users can indeed view traffic per port within the Switch Insights section, this option describes a specific capability rather than a fundamental characteristic of the entire feature’s availability.

Option C is incorrect: The Switch Insights section provides comprehensive event logs and anomaly detection, not just a limited ‘top five’ events. Users can typically access and filter all relevant switch events.

Option D is incorrect: The Switch Insights section is primarily for monitoring and diagnostics. Configuration management, including rolling back configurations, is performed through other dedicated configuration menus within the Mist dashboard.

✅ Option B (Correct) Reasoning: In a 3-stage campus fabric IP Clos, the architecture comprises Access (leaf), Distribution (spine), and Core (super-spine) layers. The Distribution layer (spines) connects to the Core layer (super-spines), establishing the third stage. This connection distinguishes a 3-stage Clos.
❌ Why the other choices are incorrect:

Option A is incorrect: While the distribution layer does connect to the access layer, this connection is fundamental to both 2-stage and 3-stage IP Clos fabrics. It does not specifically define the ‘3-stage’ aspect.

Option C is incorrect: The core layer connects to the distribution layer, not directly to the access layer, in a Clos architecture.

Option D is incorrect: Core layer devices in an IP Clos typically do not connect to each other horizontally; their connections are downwards to the distribution layer.

✅ Option D (Correct) Reasoning: When a switch shows as "Unassigned" in the Juniper Mist dashboard, it means the switch has successfully connected to the Mist cloud but has not yet been assigned to a specific site. The next mandatory step to bring it to a "Connected" state and manage it is to manually select the switch in the dashboard and assign it to your desired site.
❌ Why the other choices are incorrect:

Option A is incorrect: Rescanning a QR code is part of the initial adoption process. If the switch is already "Unassigned," it has already been adopted and recognized by the Mist cloud.

Option B is incorrect: Restarting the switch is not a required or standard step to transition from "Unassigned" to "Connected." The switch’s unassigned status is an administrative state, not a connectivity issue.

Option C is incorrect: These commands are used for troubleshooting outbound connectivity issues (e.g., if the switch couldn’t connect to the Mist cloud). An "Unassigned" status indicates the switch has connected to the cloud.

✅ Option C (Correct) Reasoning: LLDP is a Layer 2 protocol designed for local link discovery. It only operates between directly connected network devices or endpoints, limiting its scope for identifying clients across multiple network hops.
✅ Option D (Correct) Reasoning: LLDP is not universally supported by all wired client devices. Many standard clients like PCs, servers, and printers do not implement LLDP, making it unreliable for comprehensive client identification.
❌ Why the other choices are incorrect:

Option A is incorrect: While LLDP requires configuration, this is true for most network protocols and represents operational effort, not a fundamental limitation of the protocol’s discovery capability or reach when configured.

Option B is incorrect: LLDP itself is scalable in that it operates independently on each link. Its local nature doesn’t inherently make it unscalable, though managing information from many devices requires aggregation tools.

✅ Option A (Correct) Reasoning: Juniper Mist allows switches to be claimed using their unique serial numbers, providing a direct method for onboarding individual devices to an organization.✅ Option C (Correct) Reasoning: For large-scale greenfield deployments, switches purchased from Juniper Networks can be bulk-claimed to a Mist organization using the sales order ID, streamlining the onboarding process.✅ Option D (Correct) Reasoning: The Juniper Mist API provides a powerful method to automate the claiming and initial provisioning of switches, ideal for large greenfield sites requiring programmatic control and scalability.❌ Why the other choices are incorrect:

Option B is incorrect: While QR claim codes are used for device onboarding, they are essentially a convenient alternative to serial numbers or claim codes. The serial number (A) represents the fundamental identifier for manual claiming, and with C and D, covers more distinct methods.

Option E is incorrect: The system MAC address is used for network identification and communication, not for claiming or onboarding Juniper Mist-managed switches to a Mist organization.

✅ Option C (Correct) Reasoning: In MP-BGP, a route target (RT) is an extended community attribute used to control the distribution of VPN routes. It identifies which VPN routing and forwarding (VRF) instances can import (receive) and export (advertise) specific VPN routes, effectively defining the membership and route sharing between different VRFs.
❌ Why the other choices are incorrect:

Option A is incorrect: Route targets do not identify neighboring BGP routers. BGP peering is established based on IP addresses and AS numbers.

Option B is incorrect: BGP capabilities negotiation (using AFI/SAFI) notifies other routers about support for address families like EVPN, not route targets.

Option D is incorrect: Route targets are typically manually configured; while they must be consistent across participating routers, they are not necessarily unique per VRF for import purposes, and auto-creation is not a universal default.

✅ Option B (Correct) Reasoning: Successful Connects measures the percentage of devices that successfully authenticate and obtain an IP address via DHCP or static assignment, ensuring reliable network access for wired clients. This is a crucial user experience metric.

✅ Option C (Correct) Reasoning: Switch Health monitors key operational parameters of Juniper switches, including CPU utilization, memory usage, power supply status, and temperature. This SLE ensures the underlying network infrastructure is performing optimally and identifies potential hardware issues.

✅ Option E (Correct) Reasoning: Throughput measures the actual data transfer rates experienced by wired clients connected to the network. This SLE provides insight into the network’s capacity to handle client traffic effectively, indicating potential bottlenecks or performance degradation.

❌ Why the other choices are incorrect:

Option A is incorrect: Capacity, while important for network planning, is not typically defined as a direct, measurable service level expectation (SLE) within Juniper Mist Wired Assurance in the same granular way as successful connects or throughput. It’s an underlying characteristic.

Option D is incorrect: Coverage is a metric specifically used for wireless (Wi-Fi) networks to assess the signal strength and reach of access points. It is not relevant or applicable to wired network service level expectations.

✅ Option B (Correct) Reasoning: A VTEP (VXLAN Tunnel Endpoint) is the network device responsible for encapsulating Ethernet frames into UDP packets for VXLAN tunneling and de-encapsulating them at the destination. It serves as the interface between the traditional Layer 2 network and the VXLAN overlay network.❌ Why the other choices are incorrect:

Option A is incorrect: A VLAN is a logical broadcast domain for network segmentation and does not perform VXLAN encapsulation or de-encapsulation.

Option C is incorrect: A root bridge is a concept in Spanning Tree Protocol (STP) for loop prevention in Layer 2 networks, unrelated to VXLAN encapsulation.

Option D is incorrect: "WXLAN policy" is not a recognized networking component that performs VXLAN encapsulation; policies define behavior, not the encapsulation mechanism itself.

✅ Option B (Correct) Reasoning: The underlay network provides the physical and IP-based forwarding paths. This step involves cabling, assigning IP addresses, and configuring routing protocols to establish fundamental physical connectivity and reachability between core and access devices.❌ Why the other choices are incorrect:

Option A is incorrect: Defining the topology and selecting devices are initial design and planning steps, not the actual execution of physical connectivity.

Option C is incorrect: The overlay network, such as EVPN-VXLAN, provides logical services and is built on top of the underlay. It does not establish the foundational physical connectivity.

Option D is incorrect: Applying the intent is the action of pushing the configuration to devices. The configuration itself, specifically for physical connectivity, is part of the underlay design.

✅ Option C (Correct) Reasoning: The Campus Fabric wizard can be used to define the fabric structure even if switches are not yet online. The configuration will be pushed when they connect to the Mist cloud.✅ Option D (Correct) Reasoning: Before deploying a Campus Fabric, switches must be claimed into the Mist organization and assigned to the specific site where the fabric will reside. This is a fundamental organizational step.❌ Why the other choices are incorrect:

Option A is incorrect: Switches must be assigned to the correct site within Mist; otherwise, they cannot be included in that site’s Campus Fabric deployment.

Option B is incorrect: Switches do not need to be online at the exact moment the Campus Fabric wizard begins. They must be online eventually to receive and apply the configuration.