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ECP-383 Real Exam Questions

Ericsson Certified Associate - Radio Network Optimization

62 questions available · Page 1 of 7

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Question 1 Multiple choice

Review the exhibit.

An operator's LTE single layer network has a cell not carrying enough traffic. To increase the traffic carried by the cell, the operator decides to modify the Idle mode behavior of the cell. Values for the qRxLevMin and qQuaimin parameters are currently set to -120 dBm and -12 dB.
Referring to the exhibit, which two configurations would be used to potentially increase the traffic carried by this cell? (Choose two.)

  1. A

    Set the qRxLevMin parameter to -117 dBm.

  2. B

    Set the qQualMin parameter to -15 dB.

  3. C

    Set the qQuaiMin parameter to -9 dB.

  4. D

    Set the qRxLevMin parameter to -123 dBm.

Show answer and explanation

Correct answers: B, D

Question 2 Multiple choice

After the installation of a new LTE antenna on a roof top, UL interference power for that sector is observed.

In this scenario, which two situations would cause the interference? (Choose two.)

  1. A

    Equipment that generates electrical magnetic fields are in the same location.

  2. B

    The antenna was placed on a mast near the edge of a rooftop.

  3. C

    A plastic enclosure was placed to cover the antenna.

  4. D

    Reflective objects such as metal chains or metal ladders were placed in front of the antenna.

Show answer and explanation

Correct answers: A, D

Question 3 Single choice

A user is participating in an IR.92 compliant VoLTE call.

What is the Quality of Service Class Indicator (QCI) of the bearer that carries SIP signaling?

  1. A

    QCI 1

  2. B

    QCI 2

  3. C

    QCI 8

  4. D

    QCI 5

Show answer and explanation

Correct answer: D

Question 4 Multiple choice

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.)

  1. A

    Decrease the
    timetotriggerA3 parameter.

  2. B

    Decrease the
    A3offset
    parameter.

  3. C

    Increase the
    A3offset
    parameter.

  4. D

    Increase the
    timetotriggerA3 parameter.

Show answer and explanation

Correct answers: C, D

Question 5 Multiple choice

Which three service KPIs (S-KPIs) are obtained by DT measurement? (Choose three.)

  1. A

    bearer drop rate

  2. B

    handover success rate

  3. C

    additional status total time for social media

  4. D

    initial buffering time for video

  5. E

    interactive time for Web browsing

Show answer and explanation

Correct answers: A, B, D

Question 6 Multiple choice

Which two statements are valid for Call Re-establishment in WCDMA? (Choose two.)

  1. A

    Call Re-establishment in WCDMA targets RL failures or RLC errors in the DL.

  2. B

    When Call Re-establishment in WCDMA is activated and after RL failure or an RLC unrecoverable error, the UE selects a new cell using the soft handover procedure.

  3. C

    Call Re-establishment in WCDMA improves the voice drop rate.

  4. D

    When Call Re-establishment in WCDMA is activated and after RL failure or an RLC unrecoverable error, the UE goes to idle mode.

Show answer and explanation

Correct answers: B, C

Question 7 Single choice

What is a benefit of Remote Radio Unit (RRU) deployment compared to a standard Radio Unit (RU) deployment?

  1. A

    RRU consumes less power.

  2. B

    RRU provides for easier legalization of the equipment.

  3. C

    RRU provides easier deployment and maintenance.

  4. D

    RRU has lower feeder loss.

Show answer and explanation

Correct answer: D

Question 8 Single choice

Review the exhibit.

Cell A has neighbor relations with cells B and C which share the same frequency and PCI. Cells B and C
do not share any overlapping area.

Referring to the exhibit which statement is correct?

  1. A

    Handover performance of cell A is affected.

  2. B

    There is no degraded performance expected in any of the cells.

  3. C

    Handover performance of cell C is affected.

  4. D

    Handover performance of cell B is affected.

Show answer and explanation

Correct answer: A

Question 9 Single choice

Review the exhibit.

A new residential area has recently been built showing a lack of 3G uplink coverage as shown in the exhibit. The terrain is flat and all the buildings in the area are 20 meters in height with no other relevant direct obstacles.

What should be applied to cells A_l and 8_1 to provide 3G service to the new area knowing that both cells have a soft handover (SHO) factor of 1.9?

  1. A

    Increase the CPICH power.

  2. B

    Increase the electrical downtilt.

  3. C

    Reduce the antenna height.

  4. D

    Change the azimuth.

Show answer and explanation

Correct answer: D

Question 10 Single choice

Review the exhibit.

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

  1. A

    57.5 dBm

  2. B

    42.5 dBm

  3. C

    40 dBm

  4. D

    46 dBm

Show answer and explanation

Correct answer: A