NO.58 When the coverage area is more and more severe in the 1 channel of the 2.4 GHz band, adjusting the device to 3 channels can effectively reduce interference.

NO.59 The choice of WLAN coverage antenna, for narrow and long areas, it is recommended to select (), open a short distance area, it is recommended to select ().

NO.60 What is the parameter used in the 802.11 frame to check the integrity of the received frame?

NO.61 When the AC is a side-by-side networking, if the data is directly forwarded, the data stream () AC; if the data is in tunnel forwarding mode, the data Stream AC.

NO.62 Mesh networking is defined in which of the following 802.11 protocol standard?

NO.63 What are the common troubleshooting methods in WLAN networks? (Multiple choice)

NO.64 In the frame of 802.11, which Address bits represent the frame Address at the receiving end?

NO.65 The correct steps for using the Huawei WLAN planning tool are ().

NO.66 What is the radio physical layer technology used by 802.11ac?

NO.67 Which of the following rates is not the rate supported by the 802.11a protocol?

NO.68 In the Fit AP network, which of the following authentication methods does not require AC to participate during the authentication process?

NO.69 If you want to get better covered effect, you should enable the AP signal ( ) through the wall.

NO.70 Various pipes, metal keel and aluminum pinch in the ceilings will bring a greater impact on the actual effects of signal coverage.

NO.71 MIMO (Multiple input and multiple output), that is, multiple input and multiple output, wireless access points and clients using 802.11n technology can simultaneously transmit data using up to three spatial streams, and the theoretical rate can reach 600 Mbps.

NO.72 Which of the following standards organization for the WLAN device is certified to achieve interoperability of WLAN technology?

NO.73 The roaming of the terminal in different VLANs belongs to.

NO.74 If PoE is enabled on the switch, you can no longer access legacy devices on these interfaces.

NO.75 After passing, C. passing, after not following the following two-link backup networking, the description is incorrect.

NO.76 In the 802.11 frame, what is the value of To DS and From DS when the wireless station sends a signal to the wireless AP?

NO.77 Which of the following options that can be configured under the VAP template? (Multiple choice)

NO.78 For indoor distributed APs, the following description is correct (B).