[2022年更新]JN0-250.PDFの問題回答PDFサンプル問題現実的 [Q23-Q46]

[2022年更新]JN0-250.PDFの問題回答PDFサンプル問題現実的

Juniper JN0-250問題集PDFはまもなく最高のベストスコア

Juniper JN0-250 認定試験の出題範囲：

トピック	出題範囲
トピック 1	Identify the concepts or operation of WLAN monitoring Service level expectations (SLE)
トピック 2	Identify concepts of Wi-Fi standards Security and authentication Physical Layer
トピック 3	Identify the concepts or components of WLAN lifecycles Deployment migration strategies
トピック 4	Identify the components or functionality of MistAI Mist AI Configuration
トピック 5	Wi-Fi channels and frequencies Contention and Interference

質問 23
What happens if your Juniper Mist subscriptions expire?

A. Devices will be randomly turned off and on.
B. Access to the Ul will be shut off.
C. Devices remain operational but cannot make any further configuration changes.
D. Devices are bricked.

正解: C

質問 24
Which site survey ensures that RF design requirements are satisfied?

A. passive
B. active
C. spectrum
D. real time

正解: C

質問 25
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. 3at-capable switch.
In this scenario, what would be the cause of the error?

A. The Ethernet cable is plugged into the wrong port on the AP.
B. The cable run to each AP is too long.
C. The APs' firmware must be upgraded.
D. LLDP-MED is not configured on the switch.

正解: D

質問 26
What are two requirements to connect an AP to the Mist Cloud? (Choose two.)

A. You need DNS resolution.
B. You need a static IP address.
C. You need a CA SSL certificate.
D. You need a DHCP server

正解: A,B

質問 27
Which statement is correct about a WLAN RF medium?

A. A WLAN RF is a full-duplex, contention-free medium where 802.11 stations can transmit and receive at the same time.
B. A WLAN RF is a full duplex, contention free medium where each client transmits on a separate channel.
C. A WLAN RF is a half-duplex, contention-free medium where the access point polls each station in turn.
D. A WLAN RF is a half-duplex, shared medium where 802.11 stations contend with each other for access.

正解: D

質問 28
Which organization is responsible for creating the 802.11 standard?

A. Wi-Fi Alliance
B. Ethernet Technology Consortium
C. Institute of Electrical and Electronics Engineers (IEEE)
D. International Organization for Standardization (ISO)

正解: C

質問 29
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 doubled.
B. Signal strength has decreased by 10x.
C. Signal strength has increased by 10x.
D. Signal strength has halved.

正解: D

質問 30
You are designing a wireless network that requires smooth roaming performance and redundant coverage from at least two access points at every location.
What ensures that both of these functional requirements are satisfied?

A. co-channel interference
B. primary coverage
C. data rate
D. secondary coverage

正解: C

質問 31

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

A. Time to Connect Association DHCP failures impacted 80% of users.
B. All clients cannot connect to the Internet.
C. Successful connect averaged 1.6 seconds.
D. Eighty percent of the Time to Connect failures are related to DHCP failures

正解: C

質問 32
Which SLE would you use to determine Wi-Fi interference?

A. Successful Connects
B. Roaming
C. AP Uptime
D. Capacity

正解: D

質問 33
In a standard roam from one access point to another access point, what makes the decision to roam?

A. the client device
B. the controller
C. the access point
D. the cloud

正解: A

質問 34
A microwave oven would be classified as which type of interference?

A. non Wi-Fi
B. rogue
C. Wi-Fi
D. security

正解: A

質問 35
What does RSSI measure?

A. noise
B. interference
C. signal strength
D. frequency

正解: C

質問 36
When designing for a multiple frequency deployment (5 GHz and 2.4 GHz), which statement is correct?

A. 802. 11ac is available in both frequency bands so the design frequency is not important.
B. The coverage of the multiple bands at the same power will be identical.
C. 5 GHz is a higher frequency and so will travel further and penetrate walls better.
D. 5 GHz should generally be used for planning.

正解: C

質問 37
Which statement is correct about 802.11 wireless network interfaces?

A. Wireless NICs process all frames that are heard.
B. Wireless NICs operate in full-duplex mode.
C. Wireless NICs use Carrier Sense Multiple Access Collision Detection.
D. A wireless NIC only receives frames destined for it.

正解: C

質問 38
When using the Mist Cloud with Mist APs, which statement is correct?

A. User data is terminated in the cloud and forwarded.
B. User data is bridged locally.
C. User data is terminated in the cloud and run through a firewall.
D. User data is compressed and terminated in the cloud.

正解: B

質問 39
How should a Mist AP43 be mounted?

A. mounted vertically on a wall
B. mounted horizontally on a ceiling
C. mounted horizontally on a table
D. mounted vertically above ceilings

正解: A

質問 40
Which Mist feature provides an overview of the user experience?

A. Insights
B. Location Services
C. Policy
D. Service Level Expectations

正解: A

質問 41
You have discovered an access point that is not connected to the corporate network but it broadcasts the corporation's SSID.
In this scenario, what is this type of access point called?

A. honeypot
B. rogue
C. air gap
D. neighbor

正解: B

質問 42
What does 802.11ac (Wi-Fi 5) specify as the maximum channel width?

A. 60 MHz
B. 40 MHz
C. 20 MHz
D. 160 MHz

正解: D

解説:
Reference:
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質問 43
Which two 802.11 amendments operate within the 2.4 GHz band? (Choose two.)

A. 802.11b
B. 802.11ax
C. 802.11a
D. 802.11ac

正解: A,B

質問 44
You have discovered an access point that is not connected to the corporate network but it broadcasts the corporation's SSID.
In this scenario, what is this type of access point called?