Juniper JN0-253 Dumps Questions Answers

TheMarvis Virtual Network Assistant (VNA)in Juniper Mist AI uses real-time telemetry and AI-driven correlation to identify hardware and connectivity issues, including bad cable conditions. When a“Bad Cable”alert is raised, Marvis analyzes physical link metrics from the switch and AP—such as CRC errors, FCS drops, and link flaps—to isolate the root cause.

According to the Juniper Mist AI Operations Guide, theMarvis Actions dashboardprovides contextual insights into the issue, showing whether the fault lies in thephysical cableitself or theswitch portit is connected to. Specifically, the dashboard highlights:

The affected device and port.

Whether the degradation originates from theport hardwareor thecabling.

Suggested corrective action (e.g., replace the cable or check switch hardware).

Marvis uses its AI-driven root cause analysis engine to distinguish between cable integrity problems and port failures by examining electrical signature anomalies and historical telemetry.

Options B, C, and D are incorrect because Marvis does not display cable category ratings or identify individual broken Ethernet pairs—it focuses on identifying and isolating the fault domain.

Therefore, the correct answer isA. If the port or cable is at fault.

From Juniper’s official guide:

“You’ll need either a claim code or an activation code to claim an AP. With either, you can claim an AP by using one of the following methods:

Mist AI Mobile App

A Web browser

You can claim either a single AP using a claim code or multiple APs using an activation code. You can use any of these methods to claim an AP:

To claim a single AP, use the claim/QR code located on the rear of the AP.

To claim multiple APs, you’ll need to use an activation code. When you purchase multiple APs, we provide you with an activation code along with your PO information.”​

From the Mist documentation:

“APs can be claimed to any organization by using either the activation code, claim code or QR code.

Activation Code: Whenever you order APs, our Sales Operations team will send you an activation code which can be used for claiming the APs and subscriptions as per the order. …

AP Claim Code: You can individually claim APs to your organization by navigating to Organization > Inventory > Claim APs and entering in the claim code found on the back of each AP.

AP QR Code: Using our Mist AI mobile app you can scan the QR code printed on the back of our APs to claim APs to your organization.”​

Summary:

The Juniper Mist platform allows you to claim an Access Point using:

Activation code (provided for bulk purchases, via PO)

Claim code (unique per AP, on the rear label)

QR code (scanned with the Mist AI mobile app, also encoded as the claim code)

These extracts are direct from Juniper’s own documentation and confirm the methods for AP onboarding in the Mist platform.

InJuniper Mist AI, the concept of aBad User Minute (BUM)is a core metric used withinService Level Expectations (SLEs)and theAI-driven analytics engineto quantify negative user experience.

According to theJuniper Mist AI Operations and SLE Analytics Guide, a “bad user minute” is defined as:

“A normalized measure that represents one minute of degraded user experience for one user.”

Mist AI calculates this by multiplying the number of affected users by the number of minutes they experience poor performance. This allows administrators to understand the impact of network issues not just in duration, but in terms of total user experience degradation.

For example, if ten users experience poor connectivity for one minute, the system records10 bad user minutes. This normalization helps Juniper Mistprioritize incidents based on impact, rather than duration alone, allowing administrators to focus on issues that affect the greatest number of users.

Therefore:

Bis correct — it’s a way to normalize a user’s negative experience.

Dis correct — it’s calculated asnumber of affected users × number of minutes affected.