Senior Software Specialist Interview Questions and Answers

To troubleshoot outbound call issue, check network connectivity, SIP trunk configuration, firewall settings, and call routing rules.

• Check if the network connectivity is stable and there are no packet losses

• Verify the SIP trunk configuration and ensure that it is properly registered with the service provider

• Check the firewall settings and ensure that the necessary ports are open for outbound calls

• Verify the call routing rules and ensure that the calls are being routed to the c...read more

To troubleshoot on media gateways, start by identifying the issue and checking the logs and configuration settings.

• Identify the issue by checking for error messages or abnormal behavior

• Check the logs for any relevant information

• Verify the configuration settings to ensure they are correct

• Perform diagnostic tests to isolate the problem

• Consult documentation or vendor support for further assistance

SIP call flow is the sequence of events that occur during a SIP call.

• SIP INVITE message is sent to initiate the call

• SIP 100 Trying response is sent to acknowledge the request

• SIP 180 Ringing response is sent to indicate the call is being connected

• SIP 200 OK response is sent to confirm the call is connected

• Media is exchanged between the parties

• SIP BYE message is sent to end the call

Upgrading CM involves planning, testing, and executing the upgrade process.

• Identify the current version and the target version

• Review release notes and documentation for the target version

• Plan the upgrade process, including backup and rollback procedures

• Test the upgrade process in a non-production environment

• Execute the upgrade process in a controlled manner

• Verify the upgraded system is functioning correctly

Bloc structure is a design pattern used in clean architecture to separate business logic from UI.

• Bloc stands for Business Logic Component

• It helps in separating UI components from business logic

• Bloc communicates with the repository layer to fetch data

• Bloc pattern is commonly used in Flutter for state management

Queryparam is used to pass parameters in the URL query string, while pathparam is used to pass parameters in the URL path.

• Queryparam is appended to the end of the URL after a '?' symbol, while pathparam is included in the URL path itself.

• Queryparam is optional and can be used for filtering or sorting data, while pathparam is required for identifying a specific resource.

• Example of queryparam: /api/users?name=John&age=30

• Example of pathparam: /api/users/123