H12-311Preview

An antenna converts pilot waves on transmission lines into electromagnetic waves propagated in unbounded media (free space in most cases), or vice versa.

OFDMA and MU-MIMO are mutually exclusive technologies that cannot be configured together.

On a WLAN 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.

Which of the following profiles can be associated with an AP group? (Choose all that apply.)

Which of the following statements about the Fat AP architecture is true?

Which of the following statements about AC VRRP HSB are true? (Choose all that apply.)

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?

Which of the following statements about the ESS is true?

Which of the following statements about CAPWAP functions is false?

Which of the following commands are typically used to test network connectivity? (Choose all that apply.)

An engineer receives a customer complaint about poor wireless network experience in a room.
The engineer suspects that severe channel interference exists, and runs the display radio all command to check radio information about the AP in the room. Which of the following statements are true according to the display radio all command output? (Choose all that apply.)

Which of the following factors affect the theoretical Wi-Fi rate? (Choose all that apply.)

Which of the following statements about ISM frequency bands are true? (Choose all that apply.)

Which of the following statements are true about 802.1X authentication? (Choose all that apply.)

In an inter AC roaming scenario, which of the following statements about the AC's mobility group are false? (Choose all that apply.)

The following displays online information and type information about an AP. Assume that the AP fails to provide the WLAN service due to an unexpected fault. An engineer intends to restart the AP to restore the WLAN service. Which of the following commands can be used to restart the AP? (Choose all that apply.)

The following figure shows the hardware structure of an AirEngine 8760-X1 -PRO. Which of the following statements about components of the AirEngine 8760-X1-PRO are true? (Choose all that apply.)

In direct forwarding mode, user data packets are encapsulated in a CAPWAP tunnel and then forwarded by the AC to the upper-layer network.

The management VILAN is used to transmit packets that are forwarded through CAPWAP tunnels, including management packets and service data packets forwarded through CAPWAP tunnels.

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.

Which of the following items does not need to be checked if an AP fails to obtain an IP address through DHCP?

Which of the following configurations can be used to correctly implement MAC address authentication over APs that attempt to go online?

Which of the following 802.11 fames is used to receive data packers by a STA working, in power-saving mode?

Which of the following statements about carriers is false?