Huawei HCIA-WLAN H12-311-ENU Practice Exam V10.02 Killtest

2. The safer , easier way to help you pass any IT exams. 1.If a wireless client connecting the same SSID wants to roam from one AP to another, what is the area of the signal overlap between the two APs? A. 50% B. No need to overlap C. 100% D. 10%-15% Answer: C 2.How many channels can the 2.4 GHz band be divided into? A. 14 B. 13 C. 11 D. 3 Answer: A 3.The 802.11 physical layer standard defines some common operations of the wireless network at the physical layer: operations such as QoS, security, and roaming. A. True B. False Answer: B 4.Which of the following rates is not the rate supported by the 802.11a protocol? A. 6Mbps B. 12Mbps C. 24Mbps D. 30Mbps Answer: D 5.The Barker code is an 11-bit sequence (for example, 10110111000), which has advantages in wireless transmission, which can effectively reduce interference, but reduces efficiency. A. True B. False Answer: A Huawei HCIA-WLAN H12-311-ENU Practice Exam V10.02 Killtest 6.What are the two basic service sets included in BSS (Select 2 Answers)? A. Independent basic service set B. Infrastructure mode basic service set C. Extending the basic service set D. Extending the structure mode basic service set Answer: A B 7.Which of the following standards organizations is proposed by the CAPWAP protocol? A. FCC B. IETF 2 / 4

3. The safer , easier way to help you pass any IT exams. C. CCC D. ETSI Answer: B 8.What is the Chinese name of SSID? A. Basic service set B. Basic service area C. Extended service set D. Service set identifier Answer: D 9.IEEE is the standard organization responsible for the use of wireless frequencies in the United States. A. True B. False Answer: B 10.Spread-spectrum technology is the basis for transmitting wireless data using the ISM band. A. True B. False Answer: A 11.If the AP works in infrastructure mode, the AP's working state is full-duplex mode. A. True B. False Answer: B 12.What is correct in the following options (Select 3 Answers)? A. SSID technology can divide a wireless local area network into several sub-networks that require different authentication. Each sub-network needs independent authentication. Only authenticated users can enter the corresponding sub-network to prevent unauthorized access. The user enters the network. B. The BSSID is actually the MAC address of the AP, which is used to identify the BSS managed by the AP, and maps the BSSID and SSID in the same AP. C. Users can implement roaming under different SSIDs. Huawei HCIA-WLAN H12-311-ENU Practice Exam V10.02 Killtest D. The SSID is the same in an ESS, but the BSSID corresponding to each AP in the ESS is different. If an AP can support multiple SSIDs at the same time, the AP will assign different BSSIDs to correspond to these SSIDs. Answer: A B D 13.There are four wireless STAs. Which workstations occupy the channel preferentially according to the following backoff time parameters? A. 5 B. 7 C. 4 D. 6 3 / 4

4. The safer , easier way to help you pass any IT exams. Answer: C 14.Unlike the 802.11a/b/g standard, the 802.11n protocol is a dual-band mode of operation (supporting two operating bands of 2.4 GHz and 5 GHz). A. True B. False Answer: A 15.When a data frame is sent and acknowledged, what is the time interval to wait before the next data frame is sent ()? A. SIFS B. IFS C. DIFS D. PIFS Answer: C Huawei HCIA-WLAN H12-311-ENU Practice Exam V10.02 Killtest 4 / 4