The channel utilization reflects the traffic volume of the air interface. A high channel utilization indicates a large service volume on an AP.
- A . True
- B . False
WLAN planning has requirements on signal field strength in coverage areas.
For example, the signal field strength in key areas ranges from -40 dBm to -75 dBm, and that in common areas exceeds -85 dBm.
- A . True
- B . False
An antenna converts pilot waves on transmission lines into electromagnetic waves propagated in unbounded media (free space in most cases), or vice versa.
- A . True
- B . False
In direct forwarding mode, user data packets are encapsulated in a CAPWAP tunnel and then forwarded by the AC to the upper layer network.
- A . True
- B . False
The management VLAN is used to transmit packets that are forwarded through CAPWAP tunnels, including management packets and service data packets forwarded through CAPWAP tunnels.
- A . True
- B . False
OFDMA and MU MIMO are mutually exclusive technologies that cannot be configured together.
- A . True
- B . False
AWLAN that deploys Wi-Fi 6 products delivers a higher speed than that with Wi-Fi 5 products deployed.
- A . True
- B . False
WLAN technology uses radio waves to transmit information over the air and uses the 2.4 GHz and 5 GHz frequency bands. The 5 GHz frequency band here refers to Fifth Generation (5G) technology.
- A . True
- B . False
To quickly identify the AC on which a STA goes online, an AC saves the online status of all ACS and STAs in the mobility group.
- A . True
- B . False
On a WL AN where there are only one AP and two STAs, the two STAs can hear each other but one STA is not in the coverage area of the AP. For the AP this STA is a hidden node.
- A . True
- B . False
Huawei AC6508 can manage a maximum of 2048 APs, and is applicable to medium- and large-sized enterprises.
- A . True
- B . False
A set of security measures are taken to safeguard STA access on a wireless network, and secure association is established through authentication to ensure that all communication parties have valid identities.
- A . True
- B . False
Version replacement is mandatory to successful Fit/Fat mode switchovers of all Huawei APs.
- A . True
- B . False
Which of the following items does not need to be checked if an AP fails to obtain an IP address through DHCP?
- A . Whether the link between the AP and AC is properly connected.
- B . Whether the uplink port of the AP is correctly configured.
- C . Whether the CAPMAP tunnel configuration between the AP and AC is correct
- D . Whether a management VLAN is configured for the AP and AC.
What is the status of a VAP that is working properly?
- A . Normal
- B . On
- C . Active
- D . Online
If an SSID is incorrectly configured, STAs may not discover the target Wi-Fi.
How do I modify the SSID to enable STAs to discover the target Wi- Fi?
- A . Modify the VAP profile.
- B . Modify the RRM profile.
- C . Modify the WDS profile.
- D . Modify the SSID profile.
The source IP address is mandatory to an AC’s establishment of CAPWAP tunnels with APs.
How many source IP addresses can be assigned to an AC?
- A . 1
- B . 2
- C . 3
- D . 4
Which of the following commands can be used to display information about online WLAN users on an AC?
- A . display users all
- B . display user interface console 0
- C . display local-user
- D . display access-user
Which of the following configurations can be used to correctly implement MAC address authentication over APs that attempt to go online?
- A . [AC6508-wlan-view] ap-auth mode mac-auth
- B . [AC6508-wlan-view] ap auth-mode mac-auth
- C . [AC6508] ap auth mode mac-auth
- D . [AC6508] ap auth mode mac-auth
Which of the following items is not mandatory in a WLAN site survey?
- A . AP deployment position
- B . Cable routing
- C . Whether there is any interference source
- D . Whether a security protection system is deployed
An office houses 150 2.4 GHz users with a user concurrency rate of 60%. It is required that the bandwidth per capita be 2 Mbps on the downlink) and 1 Mbps on the uplink).
Assuming that 20 users are connected to each AP and interference is not taken into account, at least how many APs must be deployed to meet capacity requirements?
- A . 2
- B . 3
- C . 4
- D . 5
The antenna type varies with the service scenario.
Which of the following statements is true about directional antennas?
- A . Typically, directional antennas have a small gain and provide a shorter coverage distance than that of omnidirectional antennas.
- B . Directional antennas have a narrow coverage area, posing less interference to other APS.
- C . Each directional antenna is a single -polarized antenna with one port.
- D . Directional antennas Can be centrally deployed to cover a round or square area with a distance of less than 30 meters.
Which of the following statements about the ESS is true?
- A . ESSS are basic WLAN units.
- B . The ESS identifies an AP.
- C . BSSS in an ESS can have different SSIDs.
- D . The ESS is composed of BSSS as basic units and is a method of expanding the BSS range.
Which of the following statements about AC N+1 backup is true?
- A . User data information is backed up in real time.
- B . An AP simultaneously establishes CAPWAP tunnels with all ACs.
- C . The load balancing mode is not supported.
- D . Active/standby switchover and switchback are supported.
Which of the following statements about the Fat AP architecture is true?
- A . A Fat AP must work with an AC.
- B . Fat APs are applicable to medium- and large sized enterprises because they are easy to manage and maintain.
- C . Fat APs support automatic radio calibration, load balancing, and Layer 3 roaming.
- D . A Fat AP can implement user access, as well as encrypt and forward service data.
Which of the following statements about the AC +Fit AP architecture is false?
- A . Fit APs cannot work alone and need to be maintained and managed by the AC.
- B . QoS and security functions are provided by the AC.
- C . APS can be deployed in zero configuration mode, making this architecture suitable for large scale networks.
- D . APs and STAS must be managed by an NMS.
Which of the following 802.11 frames is used to receive data packets by a STA working in power-saving mode?
- A . RTS
- B . CTS
- C . ACK
- D . PS-Poll
Which of the following 802.11 control frames is sent by a STA to acquire the right to the wireless medium?
- A . RTS
- B . CTS
- C . ACK
- D . PS-Poll
Which of the following WL AN channel ranges is allowed to be used outdoors by the State Radio Regulation of China?
- A . 36-48
- B . 52 -64
- C . 1-14
- D . 149-165
Which of the following statements about carriers is false?
- A . A carrier is an electromagnetic wave that is modulated to transmit a signal. and its waveform is typically a sine wave.
- B . Carrier signals can be produced by modulating the three components (frequency bandwidth frequency, and phase) of electromagnetic waves.
- C . Carriers are the physical basis and bearer tool for transmitting voice and data information.
- D . The receiver end needs to parse carrier signals to obtain data.