問題1
When the number of RRU3151 series RRU cascade is more than 1 level, 2.5G optical module is changed to single-mode 6.144G optical module; original light module which less than or equal to
1 level can be still used.
When the number of RRU3151 series RRU cascade is more than 1 level, 2.5G optical module is changed to single-mode 6.144G optical module; original light module which less than or equal to
1 level can be still used.
正確答案: B
問題2
Time division duplex (TDD) mobile communication systems require strict time synchronization.
Time division duplex (TDD) mobile communication systems require strict time synchronization.
正確答案: B
問題3
In addition to providing installation space for the BBU, the APM30H cabinet also has 7U of user equipment installation space, and can be equipped with other optional equipment such as EMUA/EMUB, AC heating box and maintenance socket.
In addition to providing installation space for the BBU, the APM30H cabinet also has 7U of user equipment installation space, and can be equipped with other optional equipment such as EMUA/EMUB, AC heating box and maintenance socket.
正確答案: A
問題4
How many kinds of uplink and downlink ratios can TDD LTE support?
How many kinds of uplink and downlink ratios can TDD LTE support?
正確答案: B
問題5
If the GPS clock fails, it will not affect the user's business.
If the GPS clock fails, it will not affect the user's business.
正確答案: A
問題6
In the case of TDD LTE normal CP, there are 9 kinds of matching in the special subframes.
In the case of TDD LTE normal CP, there are 9 kinds of matching in the special subframes.
正確答案: A
問題7
Both the indoor distribution RRU3151 and RRU3152 series support 2T2R configuration.
Both the indoor distribution RRU3151 and RRU3152 series support 2T2R configuration.
正確答案: A
問題8
LTE uses a flattened, IP-based network structure. The EPC consists of SAE-GW, HSS, and MME. Which of the following network elements does E-UTRAN consist of?
LTE uses a flattened, IP-based network structure. The EPC consists of SAE-GW, HSS, and MME. Which of the following network elements does E-UTRAN consist of?
正確答案: D
問題9
Signal blind spots inside elevator shafts, tunnels, underground garages or basements, and tall buildings can be solved by using RRUs, indoor distribution systems, leaky cables and directional antennas.
Signal blind spots inside elevator shafts, tunnels, underground garages or basements, and tall buildings can be solved by using RRUs, indoor distribution systems, leaky cables and directional antennas.
正確答案: B
問題10
Which of the following interfaces on the UMPT board can be used for S1 interface transmission?
(Multiple choice)
Which of the following interfaces on the UMPT board can be used for S1 interface transmission?
(Multiple choice)
正確答案: A,C,D