Senior Software Specialist
Senior Software Specialist Interview Questions and Answers
Q1. how to troubleshoot on outbound call issue
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
Q2. how to troubleshoot on media gateways
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
Q3. what is SIP call flow
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
Q4. how to upgrade CM
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
Q5. how does malloc and free work.
malloc and free are functions used in C programming to dynamically allocate and deallocate memory.
malloc is used to allocate a block of memory of a specified size.
free is used to deallocate the memory previously allocated by malloc.
malloc returns a pointer to the allocated memory, while free releases the memory back to the system.
It is important to free the memory after it is no longer needed to avoid memory leaks.
Q6. Bloc structure explanation with clean architecture
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
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Q7. what is AAR ans ARS
AAR stands for After Action Review and ARS stands for Automatic Route Selection.
AAR is a structured review process used by organizations to analyze their performance after a task or mission.
ARS is a feature in telephony systems that automatically selects the best route for a call based on factors such as cost and quality.
AAR is commonly used in military and emergency response organizations.
ARS is commonly used in call centers and other telephony systems.
Both AAR and ARS are i...read more
Q8. Diff between queryparam n pathparam
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
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