Ericsson Ericsson Certifications ECP-383 Questions & Answers

• Question 11:

  Which two statements are true about 64 QAM modulation in the downlink direction? (Choose two.)

  A. The usage of 64 QAM is not dependent on radio channel quality.

  B. The usage of 64 QAM is UE dependent.

  C. The spectral efficiency of 64 QAM is higher than QPSK in strong radio conditions.

  D. The spectral efficiency of 64 QAM is lower than QPSK in strong radio conditions.

  Correct Answer: BC

• Question 12:

  Which two statements about the Radio Connection Supervision (RCS) algorithm in LTE are correct? (Choose two.)

  A. It selects the number of PRBs assigned to users for downlink and uplink.

  B. It collects radio problems and inactivity information with the purpose to release resources.

  C. It controls the modulation and coding scheme used in DL transmissions.

  D. It supervises the radio connection between E-UTRAN and a UE in connected mode.

  Correct Answer: BD

• Question 13:

  Review the exhibit.

  

  What is the EIRP of the transmitter shown In the exhibit?

  A. 57.5 dBm

  B. 42.5 dBm

  C. 40 dBm

  D. 46 dBm

  Correct Answer: A

• Question 14:

  You have collocated sectors In your 2G network on the GSM 900 and the DCS 1800 bands. Reviewing the network level traffic distribution, you noticed that the GSM 900 sectors have five times more traffic than the DCS 1800 sectors.

  Which two actions would improve load balancing between these bands? (Choose two.)

  A. adding additional GSM 900 sectors

  B. changing the handover margin

  C. expanding the site's transmission link

  D. changing the idle mode cell reselection parameter

  Correct Answer: B

• Question 15:

  Caller A is on a VoLTE call with Caller B. Suddenly Caller A is no longer able to hear Caller B but Caller B can hear Caller A.

  Which two call legs and directions should be analyzed first in this scenario? (Choose two.)

  A. the Caller B downlink

  B. the Caller A uplink

  C. the Caller A downlink

  D. the Caller B uplink

  Correct Answer: CD

• Question 16:

  Refer to the exhibit.

  

  You identify an L700 cell serving a highway with poor handover success rate performance.

  Referring to the exhibit, which two actions will help to improve the handover performance in this scenario? (Choose two.)

  A. Decrease the timetotriggerA3 parameter.

  B. Decrease the A3offset parameter.

  C. Increase the A3offset parameter.

  D. Increase the timetotriggerA3 parameter.

  Correct Answer: CD

• Question 17:

  Which element is used in maintaining a 4G VoLTE call leg?

  A. NodeB

  B. PSTN

  C. P-GW

  D. BSC

  Correct Answer: A

• Question 18:

  What is an advantage of using flexible numerology in New Radio (NR) 5G?

  A. It allows an alphanumeric mapping between physical data channels on coslted LTE and NR in non-standalone scenarios.

  B. It provides a non defined link between subcarriers used in LTE and NR.

  C. It ensures that the same subcarrier bandwidth is used in NR in both high and low frequencies.

  D. It maintains a more consistent overhead over a very large range of carrier frequencies.

  Correct Answer: A

• Question 19:

  You are using the Performance Measurements system for Ericsson WCDMA network analysis and must use predefined counters.

  On which two levels would these counters be collected? (Choose two.)

  A. the cell level

  B. the TRX level

  C. the RNC level

  D. the BSC level

  Correct Answer: AC

• Question 20:

  Which identifier is used for locating a UE in a standalone LTE network?

  A. RAC

  B. TAC

  C. LAC

  D. URAC

  Correct Answer: B