Unparalleled Nokia - NRN-522 - Nokia 5G RAN Network Operations Expert Valid Test Review

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Nokia NRN-522 Exam Syllabus Topics:

SectionObjectives
5G RAN Systems and Fault Management- Software and configuration management
  • 1. Configuration parameter updates in live networks
    • 2. Base station software management
      - Alarm and fault handling
      • 1. Fault detection and diagnosis in RAN nodes
        • 2. Troubleshooting operational issues
          Network Operations in 5G RAN- Remote operation of 5G Radio Access Network
          • 1. Connect to Nokia 5G RAN products and solutions
            • 2. Retrieve faults and alarms
              • 3. Manage base station software lifecycle
                • 4. Apply standard parameter configuration changes
                  - Operations Center procedures
                  • 1. Coordinate with technical support teams for issue resolution
                    • 2. Support network operation center workflows

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                      Nokia 5G RAN Network Operations Expert Sample Questions (Q47-Q52):

                      NEW QUESTION # 47
                      For security segmentation, NOC personnel typically do not connect directly from their workstations to production AirScale base stations. Instead, they first authenticate to an intermediate, hardened host. What is this intermediate host commonly called?

                      Answer: B


                      NEW QUESTION # 48
                      What is the key difference between a graceful restart and an immediate (forced) restart of a base station unit during maintenance activities?

                      Answer: A

                      Explanation:
                      A graceful restart is designed to minimize the impact on active subscribers by allowing the system, where possible, to complete in-progress procedures or facilitate handovers of active sessions to neighboring cells before the restart actually takes effect, reducing the number of abruptly dropped connections. An immediate, or forced, restart proceeds without this consideration, restarting the unit right away regardless of any active sessions, which will be dropped as a result. NOC engineers may choose between these options depending on the urgency of the situation: a graceful restart is generally preferred for planned maintenance activities to minimize subscriber impact, while an immediate restart might be necessary in scenarios where a unit is unresponsive or where the urgency of resolving a critical fault outweighs the brief additional impact of dropped sessions. Neither option permanently disables the unit, and graceful restarts can be initiated remotely - they do not require physical power-cycling on site.


                      NEW QUESTION # 49
                      What is the primary purpose of the secure IPsec VPN tunnel established between a centralized Operations Center and a remote 5G site's transport network?

                      Answer: C

                      Explanation:
                      Centralized Operations Centers connect to many geographically distributed 5G sites over shared transport infrastructure that may include third-party or public network segments. A secure tunnel, typically using IPsec, is established between the Operations Center's management domain and the site's security gateway to encrypt and authenticate all Operations, Administration, and Maintenance (O and M) traffic - including configuration commands, alarm and performance data, and software transfers - protecting it from interception, tampering, or unauthorized access. This secure channel has no effect on RF transmit power, which is governed by separate cell configuration parameters, and it does not perform software compression, which is a function of the software packaging process itself. It also does not replace alarm monitoring, which is handled by NetAct's Fault Management module; rather, the VPN ensures that alarm data itself reaches the Operations Center securely.


                      NEW QUESTION # 50
                      What is the primary purpose of the Xn interface in a 5G RAN architecture?

                      Answer: B

                      Explanation:
                      The Xn interface is the logical interface that connects neighboring gNBs (5G base stations) directly to one another, serving a role analogous to the X2 interface in 4G LTE. Its primary purpose is to support mobility- related signaling and data exchange between gNBs - most notably during handover procedures, where the source and target gNB use the Xn interface to coordinate the handover, exchange context information about the UE, and forward any buffered downlink user-plane data to minimize service interruption during the transition. The Xn interface can also carry information used for interference management and load balancing between neighboring cells. It is distinct from interfaces connecting the gNB to the core network (such as the NG interface), from intra-base-station interfaces like CPRI/eCPRI connecting baseband and RF units, and from the O and M connectivity used for software management, each of which serves a different architectural function within the overall RAN system.


                      NEW QUESTION # 51
                      What is the key difference between a cell that has been administratively 'locked' (disabled) and a cell that reports 'Out of Service' due to a fault?

                      Answer: B

                      Explanation:
                      'Locked' (administratively disabled) describes a deliberate, controlled state set by an operator or engineer - for example, intentionally taking a cell out of service for planned maintenance, an upgrade, or a configuration change window. This is an expected, reversible action: the cell can be 'unlocked' once the work is complete. 'Out of Service' due to a fault, by contrast, reflects an unintended operational failure - the cell was expected to be operating normally, but a fault condition (such as a hardware, transport, or synchronization issue) has prevented it from doing so, typically accompanied by one or more alarms.
                      Distinguishing these states matters for NOC engineers: a locked cell appearing down is expected and requires no fault investigation, whereas an unexpectedly out-of-service cell requires diagnosis. Neither state inherently relates to transmit power, and out-of-service conditions are not always due to software upgrades.


                      NEW QUESTION # 52
                      ......

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