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问题 #1

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

A. Adjust cell switching priority

B. Manually add neighbor cell configurationcorrect

C. Check the RF (Radio Frequency) channel

D. Open ANR algorithm switchcorrect

正确答案：BD

问题 #2

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

A. Attachcorrect

B. TAUcorrect

C. Handover

D. Service Request

正确答案：AB

问题 #3

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

A. Truecorrect

B. False

正确答案：A

问题 #4

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.

A. Truecorrect

B. False

正确答案：A

问题 #5

Which of the following statements is correct?

A. When the base station has the smallest packet, it can execute some MML commands, and can also perform self-test and comprehensive maintenance, etc., which basically does not affect the maintenance of the base station;

B. When the base station is the smallest packet, the MML command cannot be executed, and adding a software package must be executed before the MML command can be executed.

C. The RRU of LTE can only connect the AISG multi-core cable to control the ESC antenna through the RET port.

D. When adding a software package, you can start the FTP service by clicking "FTP Tools" in the upper right corner of WEBLMT.

正确答案：D

问题 #6

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

A. TA

B. Cell

C. TA listcorrect

D. Do not know any location information

正确答案：C

问题 #7

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

A. Complete the send and receive processing functions of the wireless signalcorrect

B. Complete uplink and downlink baseband data processing functions

C. Provide interface of base station and antenna systemcorrect

D. Provide interface of base station and the external clock source

正确答案：AC

问题 #8

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

A. UE

B. eNodeB

C. MMEcorrect

D. S-GW

正确答案：C

问题 #9

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

A. True

B. Falsecorrect

正确答案：B

问题 #10

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

A. DSP RRU

B. LST RRU

C. DSP BRDMFRINFOcorrect

D. DSP BRD

正确答案：C

问题 #11

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

A. S1-MME

B. S11

C. S1-U

D. S6acorrect

正确答案：D

问题 #12

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

A. MMEcorrect

B. GGSN

C. SGW

D. PGW

正确答案：A

问题 #13

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

A. 0.5ms

B. 1mscorrect

C. 10ms

D. 7ms

正确答案：B

问题 #14

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

A. Truecorrect

B. False

正确答案：A

问题 #15

What respectively are the mainstream sub-frame ratio and special subframe ratio of project delivery TDD LTE in China?

A. SA2, SSP5

B. SA5, SSP7

C. SA5, SSP2

D. SA2, SSP7

正确答案：A

问题 #16

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

A. MME select S-GW according to the UE's current TAIcorrect

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

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

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

正确答案：ABC

问题 #17

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

A. RANDcorrect

B. XREScorrect

C. AUTNcorrect

D. SRES

E. KASMEcorrect

正确答案：ABCE

问题 #18

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

A. The object of EPS session management is EPS bearercorrect

B. 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.correct

C. 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.correct

D. 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 PDcorrect

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

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

正确答案：ABCD

问题 #19

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

A. AUcorrect

B. RUcorrect

C. CU

D. Power Modulecorrect

正确答案：ABD

问题 #20

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?

A. APN

B. GUTI

C. TAIcorrect

D. None of the above

正确答案：C

问题 #21

The CPRI protocol between BBU and RRU is private protocol.

A. True

B. Falsecorrect

正确答案：B

问题 #22

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

A. Truecorrect

B. False

正确答案：A

问题 #23

The A4 event indicates that the quality of the neighboring area is above a certain threshold and can be used for load balancing.

A. False

B. True

正确答案：B

问题 #24

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

A. True

B. Falsecorrect

正确答案：B

问题 #25

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

A. Truecorrect

B. False

正确答案：A

问题 #26

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?

A. MIB

B. SIB1

C. SIB2correct

D. SIB3

正确答案：C

问题 #27

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

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

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

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

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

正确答案：A

问题 #28

Which QCI does IMS signaling correspond to?

A. QCI1

B. QCI2

C. QCI5correct

D. QCI 9

正确答案：C

问题 #29

Which of the following are not the encryption algorithms defined in the EPS? (Multiple choice)

A. 128-EEA1

B. 128-EEA2

C. 128-EIA1

D. 128-EIA2

正确答案：CD

问题 #30

What is the main reason for the low latency of LTE?

A. LTE base station processing capability is strong

B. Network structure flattening

C. Good terminal performance

D. Optical fiber transmission

正确答案：B

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