H12-311_V3.0 Exam Dumps - Huawei HCIA-WLAN Questions and Answers

adjust AP Transmit power, adjust antenna feeder

Reasonable frequency reuse to ensure that the same channel does not appear in the same or adjacent coverage areas

Use omnidirectional antennas for coverage

Use obstacles for natural isolation

100

500

800

50

PSK Authentication requires the same pre-shared key to be configured on the wireless client and device

WPA and WPA2 All support PSK Certification

PSK The authentication process is similar to the shared key authentication process, so the security is the same

PSK Certification is passed 4 Handshake Key Negotiate to verify STA side Key The legitimacy

Convergence layer three switches

One-arm router

AC superior

AP superior

Used longer IV

Added a key distribution mechanism, no longer using a single key

A more complex encryption algorithm is used

Adopt a stronger data verification algorithm

2.4 GHz-2.4835 GHz

2.471 GHz-2.497 GHz

2.4465 GHz-2.4835 GHz

2.445 GHz-2.475 GHz

Within the range of the main lobe, the power density relative to the maximum radiation direction is reduced by half (3dB) Angle

The narrower the lobe width, the better the directivity, the longer the radiation distance, the stronger the anti-interference ability

The pattern usually has two or more lobes

Only within the coverage of the half power angle, the terminal can receive the signal

clear

enable statistics

restart statistics

reset

True

False

Seamless AP roaming

Two-tier roaming

Three-tier roaming

Four-tier roaming