Juniper Juniper Certifications JN0-251 Questions & Answers

• Question 51:

  You just received the newest Mist AP and want to enable a feature that is only available at this time on Release Candidate 1.

  In this scenario, using the Mist GUI, where would you determine which version of Release Candidate 1 is available for your AP?

  A. Support Tickets and Documentation-> Feature Updates

  B. Support Tickets and Documentation-> Ports and Endpoints

  C. Support Tickets and Documentation-> Mist Edge Updates

  D. Support Tickets and Documentation-> Firmware Updates

  Correct Answer: D

  Reference: https://www.juniper.net/documentation/us/en/software/nce/nce-214-midsize-branch-mist-pwp/topics/topic-map/nce-214-midsize-branch-mist-example_part2.html

• Question 52:

  Under ideal conditions, which frequency band will have the farthest usable range?

  A. 900 MHz

  B. 2.4 GHz

  C. 5 GHz

  D. 6 GHz

  Correct Answer: B

  Reference: https://en.wikipedia.org/wiki/Long-range_Wi-Fi

• Question 53:

  Which statement is correct about a WLAN RF medium?

  A. A WLAN RF is a full duplex, contention free medium where each client transmits on a separate channel.

  B. A WLAN RF is a full-duplex, contention-free medium where 802.11 stations can transmit and receive at the same time.

  C. A WLAN RF is a half-duplex, shared medium where 802.11 stations contend with each other for access.

  D. A WLAN RF is a half-duplex, contention-free medium where the access point polls each station in turn.

  Correct Answer: C

  Reference: https://thewlan.com.au/2017/01/13/cwna-chapter-7-wireless-lan-topologies/

• Question 54:

  A user device sends signal information to the Mist Location Engine. In this scenario, what is expected from the Mist Location Engine?

  A. product advertisements

  B. coordinates

  C. sensor device information

  D. login splash page

  Correct Answer: B

• Question 55:

  The status of user authentication will affect which pair of SLEs?

  A. Successful Connects and Time to Connect

  B. Coverage and Roaming

  C. Capacity and Successful Connects

  D. Time to Connect and Throughput

  Correct Answer: C

• Question 56:

  Which Mist supported API is considered data-driven?

  A. RESTful

  B. Webhook

  C. WebSocket

  D. gRPC

  Correct Answer: D

• Question 57:

  Which Marvis Action category will detect a bad cable based on information and behavior of a single AP?

  A. AP

  B. Connectivity

  C. Layer 1

  D. Switch

  Correct Answer: C

  Reference: https://www.mist.com/documentation/category/marvis-actions/#:~:text=Layer%201%20Actionsandtext=Bad%20Cable%20Bad%20cable%20cases,Ethernet%20errors%20across%20your%20network

• Question 58:

  What are two prerequisites for adopting Juniper switches for Wired Assurance? (Choose two.)

  A. a claim code

  B. a Wired Assurance license

  C. an activation code

  D. an account on manage.mist.com

  Correct Answer: BC

  Reference: https://www.juniper.net/us/en/products/cloud-services/wired-assurance.html

• Question 59:

  Which two Mist-supported APIs are considered event-driven? (Choose two.)

  A. RESTful

  B. gRPC

  C. WebSocket

  D. Webhook

  Correct Answer: CD

• Question 60:

  Which statement is correct about Marvis Actions?

  A. It summarizes user trouble tickets and detected AP problems.

  B. It automatically detects and reports network problems.

  C. It summarizes all of the misconfigured WLANs at a site.

  D. It automatically issues an RMA for an AP.

  Correct Answer: B

  Reference: https://www.mist.com/documentation/what-is-marvis-actions/