Question 1

Which of the following are the topologies between a BBU and RF units?

Options :

A : Chain topology

B : Tree topology

C : Ring topology

D : Star topology

Answer: C

Question 2

Which of the following boards can be blocked by running the BLK BRD command?

Options :

A : BBP

B : DUPEU

C : AAU

D : RRU

Answer: C

Question 3

Which of the following statements about PDSCH DMR5 is incorrect?

Options :

A : The start symbol of a front-loaded DMRS of a type B PDSCH is always the first symbol of PDSCH.

B : The front-loaded DMRS is mandatory, and the additional DMRS is optional.

C : The overhead of type 1 DMRS is less than that of type 2 DMRS.

D : The start symbol of a front-loaded DMRS of a type A PDSCH can be symbol 2.

Answer: C

Question 4

Which of the following statements about a self-contained slot is Incorrect?

Options :

A : Faster downlink hybrid automatic repeat request (HARQ) feedback and UL data scheduling to reduce the RTT.

B : Increased GP overhead due to frequent uplink-downlink switching.

C : High requirements on latency of terminal hardware processing.

D : Prolonged sounding reference signal (SRS) transmission period to track fast channel changes and Improve MIMO performance.

Answer: A

Question 5

What does it mean when the RUN indicator of anAAU is blinking green (on for is and off for Is)?

Options :

A : There is power supply, but the board is faulty.

B : The board is working properly.

C : Software is being loaded to the board, or the board is not started.

D : There is no power supply, or the board is faulty.

Answer: D

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