H12-322 Huawei Certified ICT Professional - Wireless Local Area Network- Planning and Optimizing Enterprise WLAN Question and Answers

University classroom wireless coverage

Office building wireless coverage

University dormitory wireless coverage

Hotel WOC wireless coverage

display PoE-power

display PoE information

display PoE power interface interface-type interface-number

display PoE dower-state interface interface-type interface-number

PSE

PD

PI

POU

Key coverage areas

Ordinary coverage area

Blind area

Minimize the number of signals passing through obstacles

Ensure that the AP is facing the target area

Try to install in a shelter

AP is placed away from interference sources

Mobile HIS

CBTC

Label positioning

Barcode scanning

Warehouse horizontal plane channel planning

Warehouse vertical stereo channel planning

Scan code terminal channel support

Scan code terminal rate support

15s * 6

25s * 3

20s * 3

25s * 6

The WLAN forwarding model includes two modes: local forwarding mode and centralized forwarding mode.

The data forwarding mode of the datagram is also called the tunnel forwarding mode. The service data packets are uniformly encapsulated by the AP and then forwarded to the AC.

Line-to-AP management, also acting as a forwarding hub for AP traffic

The datagram is forwarded in text, that is, the AP management flow is encapsulated in the CAPWAP tunnel and reaches the AC termination; the AP service flow is not encapsulated by the CAPWAP.

Directly sent by the AP to the switching device for direct forwarding

The data packet is forwarded in a centralized manner, that is, the AP management flow is encapsulated in the CAPWAP tunnel and the AC is terminated. The AP service flow is not encapsulated by the CAPWAP.

Directly sent by the AP to the switching device for direct forwarding

Access layer

Convergence layer

Transport layer

Core layer

True

False

1

3

6

9

The Fresnel zone of the radio beam is an ellipsoidal region that surrounds the visible line of sight directly.

The antenna installation position should ensure that the two nodes of the link are visible, and try to ensure that there is no obstruction in the Fresnel zone.

Two nodes of the site link are visible, and the Fresnel zone boundary is blocked, which will not affect the link transmission effect.

The distance between the stations is 2 kilometers, and the radius of the Fresnel area is about 6 meters.

AP2010DN indoor panel AP

AP6010DN indoor placement AP

AP6310DN indoor distributed AP

AP6510DN outdoor AP

WEB certification

WPA-PSK

WEB-Portal certification

dot1x certification

The floor attribute is set for some basic information of this floor, which has great reference value for the installation method of AP when planning later.

The surveying personnel select the AP hotspot to enter the test session, and locate the approximate location of the interference source by moving the field strength change, and then input the distance.

Can calculate the power of the interference source

The classification of obstacles is mainly to draw the types of obstacles on the drawings.

The scale function is to let the surveyors know the size of the drawing scale more accurately.

The remote access unit of the AD9430DN can be panel mounted

The room divider antenna needs to be separated from the operator's antenna

AP installation location should pay attention to normal heat dissipation, no dripping, rat urine, etc.

Since multiple remote access units of the AD9430DN work on the same channel, this solution can effectively improve the terminal roaming effect.

PoE switches are low cost

Remotely manage PoE ports

No additional power cord required

Can be managed centrally

UPS equipment is no longer needed

260Mbps

270Mbps

288Mbps

300Mbps

Design

Planning

Implementation

Operation

True

False

Indoor-mounted APs are suitable for scenes with high wireless user density

Compared with indoor distributed AP, the indoor radio type AP has a large transmitting power.

Compared with indoor distributed AP, the indoor radio type AP has low transmission power

Indoor-mounted APs are suitable for scenarios with low wireless user density

The transmission path of the bridge link is occluded, marking the latitude and longitude of the station.

Observe the AP and antenna installation method for the site.

Every site needs to pay attention to the location of the weak house

Whether to add a relay between the leaf site and the aggregation site

In wireless communication engineering, EIRP is commonly used to measure the strength of interference and the ability of the transmitter to transmit strong signals.

The product of the power supplied by the EIRP to the antenna of the radio transmitter and the absolute gain of the antenna in a given direction

EIRP represents the transmit power of the AP

EIRP=P transmit power-Loss feeder loss + G antenna gain

Mobile phone 50m, notebook 80m

Mobile phone 290m, notebook 220m

Mobile phone 220m, notebook 290m

Mobile phone 80m, notebook 50m

Cannot export multiple paths at the same time

Only one path packet can be imported at a time

Indoor and outdoor paths support mutual guidance

The path only supports importing nodes whose drawings are not larger than the original drawing.

True

False

True

False

User role based access control

Time-based access control

Location-based access control

Policy control based on terminal type

Multiple types of business access control

There are many user terminals, and the types are concentrated.

Users only connect in a certain area, no need to consider roaming

Large number of user registration management, centralized user authentication

WLAN Survey

WLAN Tester 2.0

WLAN Planner

Antenna Alignment

True

False

The WLAN and CATV signals are mixed by the signal combiner and input to the existing CATV cable, and transmitted to the CATV coaxial shielded cable.

In the room, finally separate the signals through the splitter panel to achieve indoor wireless network coverage and TV signal transmission.

The overall construction of WoC does not need to be changed too much, the construction impact is negligible, and the wireless coverage is better. It is excellent in wireless system transformation projects.

Obvious

Signal combiner and WoC panel, need to be customized separately from the partner

At present, the cable commonly used by CATV is SY(W) V75-5 coaxial cable, which is specially produced for cable TV. The transmission frequency of 2.4G is very small, so the distance from AP to terminal panel can be longer, but it is recommended not to exceed 500 meters

The site should be directly visible between the coverage areas. It is recommended that there should be no obstacles to block.

To ensure signal transmission, the site installation height is as high as possible

Avoid interference from strong electric and other signals near the site

Reliable power is required near the site

3

4

5

6

Share-key

WPA+PSK

WPA+802.1x

WPA2+PSK

Chain networking

Diamond network

T-type network

Oval

Mesh deployment equipment costs less

Mesh supports redundant links

Mesh network can be deployed quickly and can dynamically increase network coverage

All APs in Huawei support Mesh features.

PoE powering the AP through the PoE switch

PoE powering the AP through AC6005-8

PoE powering the AP through the A feeder

Powering the AP through the PoE power injector