Juniper JNCIS-MistAI JN0-250 Questions & Answers

• Question 1:

  You have just brought online a new site of AP43s. While verifying that everything looks good, you notice that all of the access points (APs) are reporting "insufficient power." The APs are connected to an 802. 3atcapable switch.

  In this scenario, what would be the cause of the error?

  A. The cable run to each AP is too long.

  B. The Ethernet cable is plugged into the wrong port on the AP.

  C. The APs' firmware must be upgraded.

  D. LLDP-MED is not configured on the switch.

  Correct Answer: C

• Question 2:

  Users are complaining about WLAN performance and the Mist dashboard reports non-Wi-Fi interference.

  Which diagnostics tool would you use to further investigate this issue on-site and determine the location of the interference?

  A. spectrum analyzer

  B. protocol analyzer

  C. wireless design software

  D. WLAN scanner

  Correct Answer: A

• Question 3:

  You are troubleshooting a signal strength issue when you notice that the signal strength changes from -70 to -73 dBm as you move from one room to another.

  In this scenario, what is happening?

  A. Signal strength has increased by 10x.

  B. Signal strength has decreased by 10x.

  C. Signal strength has doubled.

  D. Signal strength has halved.

  Correct Answer: B

• Question 4:

  What is an 802.11 management frame transmitted by an AP?

  A. echo request

  B. ping

  C. keepalive

  D. beacon

  Correct Answer: D

• Question 5:

  

  Referring to the exhibit, what do you determine about the site's Time to Connect SLE metric?

  A. Successful connect averaged 1.6 seconds.

  B. Eighty percent of the Time to Connect failures are related to DHCP failures.

  C. All clients cannot connect to the Internet.

  D. Time to Connect Association DHCP failures impacted 80% of users.

  Correct Answer: A

• Question 6:

  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

• Question 7:

  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

• Question 8:

  Which statement is correct regarding settings at the organizational level?

  A. The organizational level is where you define each location's specific information.

  B. The organizational level is where you specify customer-level global details.

  C. The organizational level is where you enable BLE capabilities, if you have a license.

  D. The organizational level is where you specify information about each AP's placement.

  Correct Answer: A

• Question 9:

  What are two characteristics of the 2.4 GHz band when compared to the 5 GHz band? (Choose two.)

  A. shorter wavelength

  B. lower frequency

  C. less non-Wi-Fi interference

  D. more congestion

  Correct Answer: BC

• Question 10:

  When would be the earliest opportunity to configure an access point (AP)?

  A. after you are on the same network as the AP

  B. after the AP is installed

  C. after the AP is online

  D. after the AP is claimed to inventory

  Correct Answer: B