In a point-to-multipoint networking environment, one device acts as a central device, and all other devices establish wireless bridges with the central device to interconnect multiple networks. The disadvantage is that the interworking of multiple branch networks requires data forwarding through the central bridge device.
A. True
B. False
Radio frequency mainly uses spread spectrum technology. Which of the following technologies belong to Spread 2 Answers?
A. FHSS
B. DSSS
C. QPSK
D. OFDM
The antenna configuration of MIMO is usually expressed as "M*N", where what does M and N mean (Select 2 Answers)?
A. M indicates the number of transmission antennas
B. N indicates the number of transmission antennas
C. N indicates the number of receiving antennas
D. M indicates the number of receiving antennas
The modulation methods adopted by DSSS are BPSK and QPSK respectively.
A. True
B. False
Spread-spectrum technology is the basis for transmitting wireless data using the ISM band.
A. True
B. False
The 802.11n standard uses dual-band (2.4 GHz and 5 GHz), the theoretical transmission rate can reach up to 300 Mbps, and the actual test rate can reach more than 100 Mbps.
A. True
B. False
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
802.11b is a protocol based on Orthogonal Frequency Division Multiplexing (OFDM) technology.
A. True
B. False
What is the AP connected to the AC through the wired network in the WDS network?
A. Leaf AP
B. Middle AP
C. Master AP
D. Root AP
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
Nowadays, the certification exams become more and more important and required by more and more enterprises when applying for a job. But how to prepare for the exam effectively? How to prepare for the exam in a short time with less efforts? How to get a ideal result and how to find the most reliable resources? Here on Vcedump.com, you will find all the answers. Vcedump.com provide not only Huawei exam questions, answers and explanations but also complete assistance on your exam preparation and certification application. If you are confused on your H12-311 exam preparations and Huawei certification application, do not hesitate to visit our Vcedump.com to find your solutions here.