JN0-452 Free Practice Test

According to the Coverage SLE, which classifier tracks an AP that transmits at a lower data rate than a connected client?

1. A. Latency
2. B. Slow OKC Roam
3. C. Asymmetry Downlink
4. D. Device Capability

Correct Answer: C

Your organization has recently purchased new VoIP handsets. All of the VoIP handsets fail to connect to the corporate WLAN. However, all other devices connect successfully. You expect that there might be a bug with the new handsets. The vendor asks you to provide a pcap file of the handsets?? connection attempts.
Which Juniper Mist feature will provide this file?

1. A. Dynamic Packet Capture
2. B. Service Level Expectations
3. C. Clients Insights
4. D. Alerts dashboard

Correct Answer: D
According to the Cisco Catalyst 9800 Series Wireless Controller Software Configuration Guide2, Dynamic Packet Capture is a feature that enables capturing packets from a client device and downloading them as a pcap file. This file can be used for troubleshooting purposes or sent to a vendor for analysis.
[References: https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/17-2/config-guide/b_wl_17_2_cg/dynamic_packet_capture.html, , ]

What does Mist's patented 16-element vBLE Antenna Array do when "engagement" is enabled?

1. A. performs radio resource management
2. B. locates Wi-Fi assets
3. C. transmits unique and directional BLE beams
4. D. performs personal pre-shared key sharing

Correct Answer: C

Which two statements correctly describe an extended service set (ESS)? (Choose two.)

1. A. Each BSS within the ESS share a common BSSID.
2. B. Each BSS within the ESS has its own unique BSSID.
3. C. The SSID is common across all BSSs within the ESS.
4. D. The SSID is unique across all BSSs within the ESS.

Correct Answer: BC

Which two terms correctly describe transmissions over Wi-Fi? (Choose two.)

1. A. shared medium
2. B. half-duplex
3. C. full-duplex
4. D. point-to-point medium

Correct Answer: AB
Transmissions over Wi-Fi are shared medium and half-duplex.
According to the IEEE 802.11 - Wikipedia document2, two terms that correctly describe transmissions over Wi-Fi are:
Shared medium, which means that multiple devices use the same wireless channel and have to compete for access and avoid collisions.
Half-duplex, which means that devices can either transmit or receive data at a time, but not both simultaneously.
[References: https://en.wikipedia.org/wiki/IEEE_802.11, , ]