Free Practice Questions for Juniper JN0-452 Exam

In Juniper Networks Mist AI Wireless, access points discover upstream switch and port information using Link Layer Discovery Protocol (LLDP). LLDP is an IEEE-standard, vendor-neutral Layer 2 discovery protocol designed specifically to allow network devices to advertise and learn information about directly connected neighbors.

When a Juniper Mist AP connects to a wired switch, it uses LLDP to exchange information such as:

Switch hostname and chassis ID

Switch port identifier

VLAN details

Power over Ethernet (PoE) capabilities and power allocation

This information is critical for Mist operations and visibility. It enables the Mist cloud to accurately display AP-to-switch mappings, identify the exact switch port an AP is connected to, validate PoE delivery, and assist with troubleshooting wired-side issues that impact wireless performance. LLDP data is also leveraged by Mist AI and Marvis to correlate wired and wireless events, improving root-cause analysis.

The other options are incorrect for the following reasons:

CDP (Cisco Discovery Protocol) is a Cisco-proprietary protocol and is not used by Juniper Mist APs for switch discovery.

ARP (Address Resolution Protocol) resolves IP addresses to MAC addresses and does not provide device or port identity information.

SNMP is a management and monitoring protocol used by controllers or management systems, not by APs for neighbor discovery.

Because LLDP is standards-based, lightweight, and designed for neighbor discovery, it is the correct and supported protocol used by Juniper Mist APs to learn switch information.

Therefore, the correct answer is D. LLDP.

When deploying three WLAN 2.4 GHz networks in your US-based site while ensuring that each network frequency is unique and does not overlap with other frequency channels, you should use OFDM channels 1, 6 and 11. So the correct answers are B.1, D.6, and A.11.

The 37% of Successful Connects suggest that 63% failed – however, these are spread between both LD_Testbed_MD and LD_RS_Support. If the only AP with connection issues was LD_RS_Support then the reverse math may have worked.

According to the Wi-Fi configuration with Mist Systems | HCD Consulting GmbH document, three available rate limiting options in the Mist UI are:

According to the Create a Mist Account and Organization - Mist document1, two fields that are required when creating a new site are:

Site name, which is a unique identifier for the site within the organization.

Time zone, which is used to display the correct time for events and reports related to the site.

 The AP Offline Marvis Action will consider all APs assigned to sites that have connected to the cloud previously for inclusion. So the correct answer is A. all APs assigned to sites that have connected to the cloud previously.

In the architecture of Juniper Mist AI, the RESTful API is the foundational interface for all automation, monitoring, and configuration tasks.1 When building automation for a REST (Representational State Transfer) API, HTTPS (Hypertext Transfer Protocol Secure) is the protocol used as the transport mechanism. REST is an architectural style that leverages the existing standards of the web, and in the case of the Mist Cloud, it specifically mandates the use of HTTPS to ensure that all data transmitted between the automation script (the client) and the Mist Cloud (the server) is encrypted and secure.

HTTPS acts as the "delivery truck" for the API requests.2 It carries the HTTP methods—such as GET (to retrieve data), POST (to create new objects), PUT (to update existing ones), and DELETE (to remove them)—across the network to specific Mist API endpoints (e.g., api.mist.com). While the actual data being transported is typically formatted in JSON (JavaScript Object Notation), the underlying protocol that handles the connection, session negotiation, and data encapsulation is HTTPS.

Mist's "100% API" philosophy means that every feature available in the GUI is accessible via these HTTPS-based calls.3 This allows developers to use various tools and languages to interact with the platform. For example, a developer might write a script in Python (C) or use an orchestration tool like Ansible (A), but both of these will ultimately generate HTTPS requests to communicate with the Mist backend. Similarly, while some older APIs used XML (B) for data structure, modern RESTful services like Mist exclusively use JSON for its lightweight and human-readable properties.4 Therefore, HTTPS remains the essential transport layer that enables the secure, stateless communication required for scalable cloud-native automation.

Mist Radio Resource Management (RRM) performs several functions including transmit power control and channel assignment which help optimize wireless network performance by dynamically adjusting radio settings based on changing environmental conditions.So,the correct answers are A.transmit power control and C.channel assignment

According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide1, two functions of Mist Radio Resource Management (RRM) are:

Transmit power control, which adjusts the transmit power of APs based on their coverage area and interference level.

Channel assignment, which assigns channels to APs based on their location and interference level.