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Huawei HCSE-Presales-Campus Network Planning and Design V1.0 認定 H19-427_V1.0-ENU 試験問題:

1. In WLAN network, according to different channel bundling methods, it can be divided into several different types of channel working bandwidth: 40MHZ+, 40MHZ, 80MHZ, 80+80MHZ and 160MHZ.
Which of the following statements about the operating bandwidth of an 80 MHz channel is correct?

A) 80MHz is to bundle two consecutive 40MHz channels together and select the higher frequency among the four 20 MHZ channels as the main channel.
B) 80MHz is to bundle two non-contiguous 40MHZ channels together and select the higher frequency among the four 20 MHZ channels as the main channel
C) 80MHz is to bundle two non-contiguous 40MHz channels together and select one of the four 20 MHZ channels as the main channel.
D) 80MHz is to bundle two consecutive 40MHz channels together and select one of the four 20 MHZ channels as the main channel.

2. Regarding layered networking, which of the following statements is correct? Multiple choice

A) The hierarchical network model is suitable for large multinational companies and large enterprises with large network sites or sites distributed in multiple countries or regions.
B) The layered network model can be seen as a superposition of the single-layer network model, where the WAN is divided into multiple areas.
C) Multiple regions are interconnected through centralized backbones, thus enabling cross-regional access between massive sites.
D) The region specifies dual border sites in primary and backup mode. When the primary border fails, branches in the region can access each other through the backup border site.

3. The biggest change in the optoelectronic hybrid cable 2.0 is that the optoelectronic hybrid switch port changes from optical and electrical separation to optical and electrical integration. The structural optimization makes the splicing and use of the optoelectronic hybrid cable easier, while doubling the density of the optoelectronic ports.

A) Error
B) Correct

4. In WLAN enterprise campus networks, regarding SSID planning, which of the following is not recommended?

A) Planning for Visitors SSID , using MAC+Portal authentication
B) Plan a public SSID as the pre-authentication domain
C) The same SSID provides 802.1x authentication for employees and Portal authentication for guests.
D) Plan a dedicated SSID for employees and use 802.1x authentication

5. During the control channel establishment process, the CPE and RR generally establish a BGPEVPN neighbor relationship through the loopback interface.

A) Error
B) Correct

質問と回答：