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Ericsson ECP-383 Exam Syllabus Topics:

Ericsson Certified Associate - Radio Network Optimization Sample Questions:

1. A customer is deploying VoLTE and complains about high voice drop rates and voice quality degradation at the cell edge in most LTE cells in the area. The network has a dense WCDMA coverage on the 700 MHz band and patchy LTE coverage on the 2100 MHz band.
Which two features would you activate to solve this problem? (Choose two.)

A) DRX
B) TTI Bundling
C) 256 QAM DL
D) SRVCC Handover to UTRAN

2. 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 downlink
C) the Caller A uplink
D) the Caller B uplink

3. What are two correct characteristics of TDD and FDD LTE systems? (Choose two.)

A) TDD LTE systems use guard period intervals after downlink transmissions.
B) FDD LTE systems require paired spectrum to separate uplink and downlink transmissions.
C) TDD LTE systems use guard period intervals after uplink transmissions.
D) TDD LTE systems require paired spectrum to separate uplink and downlink transmissions.

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

5. 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
A3offset
parameter.
B) Increase the
timetotriggerA3 parameter.
C) Increase the
A3offset
parameter.
D) Decrease the
timetotriggerA3 parameter.

Solutions: