Huawei H12-311 Online Practice Questions and Exam Preparation

Huawei H12-311 Online Questions & Answers

• Question 51:

  Which of the following is a wireless LAN standard originally developed by the IEEE?

  A. IEEE 802.11
  B. IEEE 802.10
  C. IEEE 802.12
  D. IEEE 802.16
  A. IEEE 802.11

• Question 52:

  Telnet is one of the methods used to remotely manage an AP. Telnet authentication based on a username and password can be implemented through configuration.

  A. True
  B. False
  A. True

• Question 53:

  Huawei APs support SSIDs that contain Chinese characters.

  A. True
  B. False
  A. True

• Question 54:

  By default, Huawei WLAN devices can perform intra-AC Layer 2 roaming without requiring any additional configuration.

  A. True
  B. False
  A. True

• Question 55:

  Which of the following statements about Layer 2 and Layer 3 roaming are true? (Choose three)

  A. Layer 3 roaming occurs when STAs roam between different subnets.
  B. Layer 2 roaming occurs when STAs roam within the same subnet.
  C. Layer 2 roaming can be identified as long as the VLAN IDs before and after roaming remain the same.
  D. After Layer 3 roaming is performed, the VLAN IDs in the service sets of APs do not need to be the same.
  A. Layer 3 roaming occurs when STAs roam between different subnets.
  B. Layer 2 roaming occurs when STAs roam within the same subnet.
  C. Layer 2 roaming can be identified as long as the VLAN IDs before and after roaming remain the same.

• Question 56:

  If an 802.11n AP supports 2? MIMO technology, what is its theoretical maximum data rate?

  A. 150 Mbps
  B. 300 Mbps
  C. 450 Mbps
  D. 600 Mbps
  B. 300 Mbps

• Question 57:

  The two commonly used units describing antenna gain are dBi and dBd. The conversion relationship between them is: dBi = dBd + 2.14.

  A. True
  B. False
  A. True

• Question 58:

  Radio frequency transmission mainly uses spread-spectrum technology. Which of the following technologies belong to spread-spectrum technology? (Choose two)

  A. FHSS
  B. DSSS
  C. QPSK
  D. OFDM
  A. FHSS
  B. DSSS

• Question 59:

  The lobe width is an important parameter commonly used in directional antennas. It refers to the angle below the peak dB in the antenna radiation pattern.

  A. 3
  B. 4
  C. 5
  D. 6
  A. 3

• Question 60:

  MIMO (Multiple Input Multiple Output) allows wireless APs and clients using 802.11n technology to transmit data simultaneously over multiple spatial streams. Using up to four spatial streams, the theoretical maximum rate can reach 600 Mbps.

  A. True
  B. False
  B. False