Practice Free JN0-253 Exam Online Questions
Which of the following addresses is suitable for dividing into at least nine subnets, each with the ability to support 200 hosts per network?
- A . 10.1.1.0/24
- B . 10.1.1.0/20
- C . 10.1.1.0/19
- D . 10.1.1.0/22
You have deployed a wireless network for a customer. The customer asks you to collect real-world measurements that show signal strength, secondary coverage, and co-channel interference on a map.
In this scenario, which task must you perform to satisfy the requirements?
- A . A predictive model
- B . A predictive survey
- C . A post-installation validation survey
- D . An AP-on-a-stick survey
In the Marvis Actions dashboard, the "Bad Cable" action listed under "Layer 1" indicates a bad cable connected to which type of device?
- A . WAN edge
- B . client
- C . AP
- D . switch
Which two statements are true about Juniper Mist Wireless Assurance Radio Resource Management (RRM)? (Choose two.)
- A . RRM builds me channel plan based on a real-time assessment of the network.
- B . RRM builds the channel plan based on the physical distance between the APs.
- C . RRM tuning happens automatically.
- D . RRM tuning Is a manual process that you must Initiate every day.
A C
Explanation:
Real-time Assessment: Juniper Mist’s Radio Resource Management (RRM) builds the channel plan based on real-time network assessments. It dynamically adjusts to changing conditions in the RF environment, ensuring optimal performance by continuously monitoring factors such as interference, client distribution, and usage patterns.
Automatic Tuning: RRM tuning happens automatically. Mist AI leverages reinforcement learning to continually optimize RF settings without manual intervention, adjusting channels, power levels, and other parameters in real-time to maintain optimal network performance.
Reference: Understanding Radio Resource Management | Juniper Networks Radio Management | Mist | Juniper Networks
Which statement is correct about Wi-Fi location-based services (LBS)?
- A . Wi-Fi LBS requites me Wireless Assurance subscription.
- B . Wi-Fi LBS needs the User Engagement subscription.
- C . Wi-Fi LBS does not require a subscription.
- D . WI-FI LBS requites a Wired Assurance subscription.
B
Explanation:
Wi-Fi Location-Based Services (LBS) provided by Mist require the User Engagement subscription.
This subscription includes features that enhance user interactions and engagement, such as location services, which are critical for delivering personalized and location-aware experiences.
By leveraging Wi-Fi LBS with the User Engagement subscription, organizations can offer advanced services like wayfinding, asset tracking, and location analytics.
Reference: Juniper Networks documentation on subscriptions required for Wi-Fi LBS and User Engagement services.
What is the minimum administrator role needed to invite a user to be an administrator of an organization?
- A . network admin
- B . installer
- C . helpdesk
- D . super user
Which statement is correct about service level expectations (SLEs)?
- A . Service level expectations are never quantified in user minutes
- B . Service level expectations are only measured as pass or fail
- C . Some service level expectations are quantified in user minutes
- D . All service level expectations are quantified in user minutes
What are the prerequisites for connecting to the Juniper Mist cloud network?
- A . Factory default configurations and network connection prerequisites
- B . Network connection prerequisites and device configuration settings
- C . Network connection prerequisites and organization settings
- D . Organization settings and device configuration settings
You are asked to configure Mist lo send e-mail alerts lo your organization administrators, who all have mailboxes that reside on the same e-mail server. Alerts are being generated and are visible in the Mist GUI. but only some administrators are receiving the alert emails.
What Is the problem in this scenario?
- A . The affected administrators have not enabled e-mail notifications in their Mist My Account settings.
- B . The user e-mail addresses are not correctly formatted.
- C . The organization does not have sufficient alert subscriptions.
- D . Your e-mail server is blocking e-mail from Mist.
A
Explanation:
Identify the Problem: Alerts are being generated and visible in the Mist GUI, but only some
administrators receive the alert emails.
Possible Issues:
User email addresses not correctly formatted.
Email server blocking Mist emails.
Insufficient alert subscriptions.
Administrators not enabling email notifications.
Root Cause:
Since some administrators receive the alerts, email formatting and server blocking issues can be ruled out.
If alert subscriptions were insufficient, no administrators would receive the alerts.
The most likely cause is that the affected administrators have not enabled email notifications in their Mist My Account settings.
Resolution:
Ensure that all administrators have enabled email notifications in their Mist My Account settings.
Reference: Mist Documentation on Notifications: Mist Documentation
Which two network service statuses are shown on the insights page for a specific site? (Choose two.)
- A . DHCP
- B . BGP
- C . NTP
- D . DNS