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Updated: Sep 01, 2026

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Nokia NCS_20022252020 Exam Overview:

Certification Vendor:Nokia
Exam Name:NCSS 2G/3G SCN PaO 2.2
Exam Number:NCS_20022252020
Available Languages:English
Real Exam Qty:85
Sample Questions:Nokia NCS_20022252020 Sample Questions

Nokia NCS_20022252020 Exam Syllabus Topics:

SectionObjectives
Interfaces and Protocols- Signaling protocols
  • 1. ISUP, SIP, SIP-IP PBX support
    • 2. Megaco / H.248 for Mn interface
      - Core network interfaces
      • 1. Nb, Iu-CS, Iu-PS interfaces
        • 2. X3 interface for CDR and signaling transfer
          Signaling and Routing Analysis- Digit analysis and routing trees
          • 1. EOS and routing attribute analysis
            • 2. Circuit group and trunk originated call analysis
              - SS7 / M3UA / signaling configuration
              • 1. SLS routing behavior
                • 2. M3UA associations and link sets
                  Mobile Core Network Operations (MSS / MGW)- Media Gateway (MGW) Configuration
                  • 1. MGW hardware evolution (A2SU replacement)
                    • 2. Control plane traffic limits
                      - Mobile Switching Center Server (MSS) Architecture
                      • 1. MSS integration with OpenMGW
                        • 2. MSS pooling and capacity limits
                          • 3. Remote AS and routing configuration
                            Traffic Measurement and Network Performance- Network optimization lifecycle
                            • 1. Measure, analyze, optimize, implement cycle
                              - Traffic and load measurements
                              • 1. Control unit and traffic category metrics
                                • 2. VLR and circuit group measurements

                                  Nokia NCSS 2G/3G SCN PaO 2.2 Sample Questions:

                                  Question 1

                                  What is the protocol used for Mn interface?

                                  A. ISUP
                                  B. SIP
                                  C. Megaco.
                                  D. M3UA


                                  Question 2

                                  What is the maximum number of MGWs in one cluster for control plane traffic?

                                  A. 16
                                  B. 4
                                  C. No theoretical limitation
                                  D. 8


                                  Question 3

                                  How can Nokia help customers over their Core Modernization challenges?

                                  A. Free of Charge software upgrades.
                                  B. Continue to deliver legacy products with lower price.
                                  C. To reduce Opex and to get customers ready for VoLTE and other new services with state-of-the art technology.
                                  D. Provide free network assessment services.


                                  Question 4

                                  Which of the following features has a positive impact on end to end call delay?

                                  A. None of the above
                                  B. TrFO
                                  C. TFO
                                  D. RTP Multiplexing


                                  Question 5

                                  What is the maximum number of MSSs in one pool supported by Nokia MSS?

                                  A. 15
                                  B. 5
                                  C. 7
                                  D. 10


                                  Solutions:

                                  Question 1
                                  Answer: C
                                  Question 2
                                  Answer: B
                                  Question 3
                                  Answer: C
                                  Question 4
                                  Answer: B
                                  Question 5
                                  Answer: D

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