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Question No : 1
A. In a wireless communication engineering, EIRP is usually used to measure the intensity of interference, and the ability of transmitter to transmit a strong signal
B. EIRP is the product of radio transmitter power supplied to the antenna and the antenna in a given direction absolute gain
C. EIRP represents the terminal received AP signal strength
D. EIRP = P transmission power -Loss feeder loss + G antenna gain
Question No : 2
[6605-wlan-view] radio-profile id 1
[6605-wlan-radio-prof-2.4G] rts-cts-mode rts-cts
[6605-wlan-radio-prof-2.4G] rts-cts-threshold 1500
A. <1500 Byte
B. 1500 Byte
C. >1500 Byte
D. 1024 Byte
Question No : 3
Question No : 4
Question No : 5
A. network is divide into access layer, distribution layer, the core layer
B. AP is connected to the access layer switches, it is recommended to use POE Switch
C. AC can use core switches built-in AC card to realize
D. At the access layer can use to hang the cartridge AC to implement wireless centralized control function
Question No : 6
Question No : 7
A. WLAN forwarding model includes local forwarding mode and centralized forwarding mode
B. data packet local forwarding mode is also called tunnel forwarding mode, service data packets uniformly encapsulated by the AP reached AC to achieve forwarding, AC not only for management of AP, but also as a forwarding maincenter of AP traffic
C. data packet local forwarding, means AP management flow encapsulated in CAPWAP tunnel, terminate when reaching the AC; AP traffic flow without CAPWAP encapsulation, and by the AP sent directly to the switching device for forwarding
D. data packet centralized forwarding , means AP management flow encapsulated in CAPWAPW tunnel, terminate when reaching the AC; AP traffic flow without CAPWAP encapsulation, and directly by the AP sent to the switching device for forwarding
Question No : 8
A. user bandwidth demand
B. the number of users
C. AC model
D. if need to use the dual-link backup
Question No : 9
A. WEP certification
B. WPA-PSK certification
C. MAC certification
D. WPA-EAP certification
Question No : 10
A. Fresnel zone of the radio wave beam is a ellipsoid area directly surrounding visible sight path
B. antenna installation location to ensure the link two nodes visible, try to ensure Fresnel zone without barrier
C. Site link two nodes visible, Fresnel zone boundary will be blocked part, will not affect the link transmission effect
D. site 2 kilometers away, and generate Fresnel zone radius of about 6 meters
Question No : 11
Question No : 12
A. AC dual-link cold stand-by
B. AC configuration backup
C. AC dual-link hot standby
D. VRRP dual machine hot standby
Question No : 13
A. horizontal lobe, vertical lobe
Question No : 14
A. Internet address
B. WLAN source address
C. AP management address
D. WEAN business address
Question No : 15
A. train-ground wireless link redundancy
B. CBTC deploy dual wireless networks
C. PIS train-ground communication dual-network
D. use 802.11n protocol