H12-311_V3.0 Exam Questions

In the 802.11 frame, what type of frame does the STA 's association request and authentication request belong to?

Which of the following aspects are the technical advantages of 802.11n compared to 802.11a/b/g?

Which of the following standards organizations implements WLAN technology interoperability for WLAN equipment certification?

The CAPWAP protocol is a WLAN standard proposed by the IEEE standard organization in April 2009, and is used for communication between the AC and the thin AP.

How many channels does China support in the 2.4GHz frequency band?

Which of the following options belongs to the 5GHz frequency band supported?

Which modulation method does the picture below belong to?

What is the name of the first radio communication network based on packet technology?

How many channels can the 2.4 GHz frequency band be divided into?

What is the 2.4 GHz band U.S. non-overlapping channel?

What is the distance between the center frequencies of each channel in the 2.4 GHz band?

What is the bandwidth of each channel in the 802.11g frequency band?

Which of the following protocols can support both the 2.4GHz frequency band and the 5GHz frequency band?

What is the range of working frequency stipulated in 2.4 GHz band?

The basic service set is the basic component of the 802.11 network, which is composed of a group of workstations communicating with each other.

BSSID is actually the MAC address of the AP, which is used to identify the BSS managed by the AP.

Which of the following is a wireless local area network standard originally formulated by IEEE?

Huawei AP products can only support one SSID configuration.

WDS technology improves the flexibility and convenience of the entire network structure, but it can only support the point-to-point working mode.

What is the name of SSID?

An infrastructure mode network consisting of multiple APs and the distributed systems connecting them, also known as which one?

Which of the following AP modes does not belong to the WDS network?

What is a network composed of a wireless AP and associated wireless clients called?

If a BSS is completely composed of STAs, what is the name of the BSS?

Mesh networking is defined in which of the following protocols?

What is the area covered by a single AP called?

The full name of BSS is Basic Service Set. BSS can be divided into Independent BSS and Infrastructure BSS.

Which of the following technologies belongs to wireless metropolitan area network?

If the wireless client wants to connect to the WLAN through the AP, what does it use to connect to the wireless network?

In WLAN, the AP has been working in the half-duplex state.

In 1999, the IEEE 802.11a standard was formulated, which stipulated that the working frequency band of wireless local area network was 5.15-5.825GHz, and the data transmission rate...

Unlike the 802.11a/b/g standard, the 802.11n protocol is a dual-frequency working mode (supporting two working frequency bands of 2.4GHz and 5GHz).

802.11b supports () channels in the United States, of which () channels do not overlap.

What is the maximum rate supported by the original 802.11 protocol in Mbps?

What is the working frequency band used by the original 802.11 protocol?

Which of the following options is the maximum rate supported by the 802.11g protocol?

Which technology is used to implement the 802.11a protocol?

What type of frame () does the ACK frame belong to in WLAN?

What is the parameter used to check the integrity of the received frame in the 802.11 frame?

What parameters are used in 802.11 frames to reassemble frame segments?

What frame does the passive scanning of the wireless client obtain the surrounding wireless network information?

What frame does the wireless client actively scan to obtain the surrounding wireless network information?

There are four wireless STAs. According to the following back-off time parameters, which workstation is the priority to occupy the channel?

What is the mandatory wireless LAN security standard?

CAPWAP protocol was proposed by which of the following standard organizations?

ETSI is the standard organization of which country or region?

The point-to-point wireless bridge can be used to connect two networks located in different places. In the wireless backbone connection, Root AP and Leaf AP should be set to differ...

In a WDS network, a Root AP can connect to multiple Leaf APs, but a Leaf AP can only connect to one Root AP.

In the WDS network, what is the name of the AP that is connected to the AC by wire?

The 802.11 physical layer standard defines some common operations of the wireless network at the physical layer: such as QoS, security, roaming and other operations.