H31-411-ENU Online Training Archives

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1. Which of the following command can query the model and supported band of RRU?

DSP RRU

LST RRU

DSP BRDMFRINFO

DSP BRD

2. Which of the following NE does LTE system's IMS service data transmission have nothing to do with?

eNodeB

MME

S-GW

3. In LTE, the uplink pilot signal includes DMRS and Sounding RS.

True

False

4. Which of the following modules does the AAU function module include? (Multiple Choice)

Power Module

5. One resource block RB has 14 symbols in the time domain and 12 subcarriers in the frequency domain.

True

False

6. In LTE system, what is the length of the wireless subframe?

0.5ms

1ms

10ms

7ms

7. The safety vector in 4G is a quad. Which of the following names of the quad are included? (Multiple Choice)

RAND

XRES

AUTN

SRES

KASME

8. Which of the following interface is based on the Diameter protocol?

S1-MME

S11

S1-U

S6a

9. The CPRI protocol between BBU and RRU is private protocol.

True

False

10. To Huawei Probe&Assistant software side, about the dropped calls formula definition, which of the following is correct?

Call Drop Rate = eRAB AbnormRel/eRAB Setup Success *100%

Call Drop Rate = eRAB AbnormRel/RRC Connection Setup Success *100%

Call Drop Rate = eRAB AbnormRel/eRAB Release Total *100%

Call Drop Rate = eRAB AbnormRel/eRAB NormRel *100%

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11. Which QCI does IMS signaling correspond to?

QCI1

QCI2

QCI5

QCI 9

12. The RET interface on RRU is used to connect tunable antenna.

True

False

13. SFBC is a transmit diversity technique that mainly obtains transmit diversity gain for areas with low SINR, such as cell edges. Compared to STBC, SFBC is a space-frequency two-dimensional transmit diversity, while STBC is a space-time two-dimensional transmit diversity.

True

False

14. The SAE-GW is a combination of two network elements, SGW and PGW.

True

False

15. Which of the following NE (Network Element) does the packet not go through when the users are surfing the Internet with cell phone?

MME

GGSN

SGW

PGW

16. In the process of Attach/TAU/Handover, which of the following information are based on by MME using DNS resolution function to select the S-GW?

APN

GUTI

TAI

None of the above

17. The wireless layer access class information, which is allocated to a specific UE, including UE timers, common channel parameter configuration, will be broadcasted on which kind of the following system messages?

MIB

SIB1

SIB2

SIB3

18. When the user is in ECM-IDLE state, which of the following is the user's location granularity that the network can know?

Cell

TA list

Do not know any location information

19. Which of the following descriptions are correct? (Multiple Choice)

The object of EPS session management is EPS bearer

The EPS provides an IP connection between the UE and the PDN through the E-UTRAN network and the EPC network for UE, which is called a PDN connection. Each PDN connection consists of an EPS bearer and an IP connection.

EPS bearer is defined as a logical set of one or more Service Data Flows (SDFs) to meet the needs of QoS management and control at a bearer level granularity.

When the UE is connected to the PDN, an EPS bearer is established. This bearer is not released during the PDN connection to provide a permanent connection to the PD

This bearer is called the default bearer. All additional EPS bearers to the PDN are called dedicated bearers.

The default bearer and dedicated bearer under a PDN connection generally correspond to different APNs.

20. Both the indoor distribution RRU3151 and RRU3152 series support 2T2R configuration.

True

False

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21. In which of the following process, MME use DNS parse function based on GUTI to select new MME? (Multiple Choice)

Attach

TAU

Handover

Service Request

22. Which of the following are the solutions of the missed neighbor cell? (Multiple Choice)

Adjust cell switching priority

Manually add neighbor cell configuration

Check the RF (Radio Frequency) channel

Open ANR algorithm switch

23. About the description of the gateway selection in EPC, which of the following are correct? (Multiple Choice)

MME select S-GW according to the UE's current TAI

In the process of Attach, select S-GW using the DNS parse function based on TAI

Should try to choose the P-GW unity with the selected S-GW

If UEA activates multiple PDN connections to a APN, these PDN connections can choose different PGW

24. The UBBP board supports reuse of baseband resources between systems to achieve multi-system concurrency.

True

False

25. Which sub-functions are the RF subsystem functions included in the following? (Multiple Choice)

Complete the send and receive processing functions of the wireless signal

Complete uplink and downlink baseband data processing functions

Provide interface of base station and antenna system

Provide interface of base station and the external clock source

26. The installation position of the GPS antenna to broaden its view of the sky, no tall buildings around. GPS antenna upright angle should not be less than 90°.

True

False

27. The near-end commissioning internet access on the UMPT is USB, the insert cable is connected to the commissioning terminal.

True

False

28. Which of the following does mark the identifying of the user PDN connection include in LTE/EPC network? (Multiple Choice)

TEID

UEIP

APN

GUTI

29. Which of the following interface is used to connect between eNodeB?

Iub