Huawei HCIP-LTE V1.0 - H31-421 Exam Questions [2026]

QUESTION NO: 1
Which of the following is a functional X2AP agreement?

A. Load Management B. E-RAB management C. Mobility Management D. Paging E. eNodeB configuration updates

Correct Answer: A,C,D,E

QUESTION NO: 2
Which of the following is the smallest granularity in the LTE system that is scheduled in the time domain?

A. 10ms B. 0.5ms C. 20ms D. 1ms

Correct Answer: D

QUESTION NO: 3
Which of the following statements about special sub-frames are wrong? (Multiple choice)

A. DwPTS can be configured to random access preamble, UpPTS can contain scheduling information B. DwPTS and UpPTS can carry uplink and downlink information, GP is used to avoid the downlink signal (delayed arrival) to disturb the uplink signal (early transmission) C. The guard period (GP) exists only between special sub-frames D. Special sub-frames include downlink pilot timeslot, guard period and uplink pilot time slot

Correct Answer: A,C

QUESTION NO: 4
In the Uu interface, which layer performs traffic monitoring and reporting?

A. RLC B. RRC C. MAC D. PDCP

Correct Answer: A

QUESTION NO: 5
Which of the following PRACH preamble formats can only be used for TDD random access?

A. Format 4 B. Format 2 C. Format 3 D. Format 1

Correct Answer: A

QUESTION NO: 6
Which of the following RRUs apply to the LTE standard? (Multiple choice)

A. RRU3936 B. RRU3256 C. RRU3829 D. RRU3279

Correct Answer: A,B,D

QUESTION NO: 7
ACK/NACK feedback for uplink HARQ process, which of the following channels can be carried?

A. PUSCH B. PHICH C. PUCCH D. PRACH

Correct Answer: A,C

QUESTION NO: 8
Which of the following is not an interface on the LTE wireless side?

A. S1 B. Iu C. Uu D. X2

Correct Answer: B

QUESTION NO: 9
ESN is used to uniquely identify a network element logo. The ESN needs to be pre-recorded before starting installation for use by the base station during commissioning.

A. True B. False

Correct Answer: A

QUESTION NO: 10
Which of the following is the default username and password for near-end maintenance eNodeB?

A. admin/admin123 B. admin/hwbs@123 C. admin/hwbs123 D. admin/admin@123

Correct Answer: B

QUESTION NO: 11
Which of the following channels is the only physical channel used to carry high-level service data and signaling and therefore it is the most important physical channel for LTE.

A. PDCCH B. PDSCH C. PUCCH D. PRACH

Correct Answer: B

QUESTION NO: 12
The terminal in 3GPP R9 version can support carrier aggregation.

A. True B. False

Correct Answer: B

QUESTION NO: 13
What kind of network element are used to allocate and schedule for air interface resource?

A. UE B. eNodeB C. MME D. The above three kinds of network elements are all involved

Correct Answer: B

QUESTION NO: 14
In which of the following messages can UE capability information be passed from the MME to the eNodeB?

A. S1AP: S1 setup B. RRC: RRC connection setup C. S1AP: Initial context setup D. SLAP: E-RAB setup

Correct Answer: C