20+ Senior Technical Specialist Interview Questions and Answers

To resolve a production issue with no clue, follow a systematic troubleshooting approach.

• Start by gathering information about the issue, such as error messages, logs, and user reports.

• Analyze the available data to identify any patterns or commonalities that could help pinpoint the root cause.

• Review recent changes or deployments that might have introduced the issue.

• Consider reaching out to colleagues or experts for their insights and suggestions.

• If necessary, replicate the iss...read more

Customization options in VoIP industry vary based on business requirements.

• Customized call routing based on business hours and locations

• Integration with CRM systems for caller information

• Customized IVR menus for specific departments or services

• Call recording and transcription for compliance or training purposes

• Customized reporting and analytics based on specific KPIs

IntArray & array are similar in Kotlin, Reflection is used to inspect and modify classes at runtime, jvmStatic and Jvmoverload are annotations in Kotlin, deeplink is a way to navigate to a specific page in an app, Launch modes determine how a new instance of an activity is associated with the current task

• IntArray & array are used to define arrays in Kotlin, with IntArray being a specific type of array containing integers

• Reflection in Java allows for inspecting and modifying c...read more

VoIP support can be improved by integrating AI bots for enhanced customer service and troubleshooting. The future of VoIP lies in seamless integration with AI bots for automation and efficiency.

• Integrating AI bots for real-time troubleshooting and customer support

• Implementing natural language processing for improved user interactions

• Utilizing AI for predictive maintenance and proactive issue resolution

• Enhancing security measures through AI-powered threat detection

• Exploring AI...read more

Designing highly available solutions in Azure involves utilizing redundancy, load balancing, and fault tolerance.

• Utilize Azure Availability Zones to ensure redundancy and fault tolerance

• Implement Azure Load Balancer to distribute incoming traffic across multiple instances

• Use Azure Traffic Manager for global load balancing and failover

• Utilize Azure Auto Scaling to automatically adjust resources based on demand

• Implement Azure Site Recovery for disaster recovery and high availab...read more

Inter service communication in a distributed system involves communication between different services to achieve a common goal.

• Use of APIs for communication between services

• Message queues for asynchronous communication

• Service discovery for locating and connecting to services

• Implementing protocols like REST, gRPC, or MQTT

• Handling communication failures and retries

I automate using Robot framework by creating test cases in a keyword-driven format and utilizing built-in libraries and custom keywords.

• Create test cases using Robot framework syntax

• Utilize built-in libraries for common tasks

• Develop custom keywords for specific automation needs

• Leverage variables and data-driven testing

• Integrate with external tools and APIs for comprehensive automation

To improve SQL query performance, optimize indexes, minimize data retrieval, use proper joins, and consider query structure.

• Optimize indexes to speed up data retrieval

• Minimize data retrieval by selecting only necessary columns

• Use proper joins (e.g. INNER JOIN instead of CROSS JOIN)

• Consider query structure and avoid unnecessary subqueries or functions

Widgets can be integrated in Backbase portal by creating custom widgets using AngularJS and integrating them using Backbase widget API.

• Create custom widgets using AngularJS

• Integrate widgets using Backbase widget API

• Use Backbase widget API functions like bbData, bbEvent, bbStorage, etc.

• Customize widget appearance and behavior using CSS and JavaScript

Kubernetes handles scaling by automatically adjusting the number of pods based on resource usage.

• Kubernetes uses Horizontal Pod Autoscaler (HPA) to automatically scale the number of pods based on CPU or memory usage.

• HPA adjusts the number of replicas of a Deployment, ReplicaSet, or StatefulSet.

• Kubernetes also supports Vertical Pod Autoscaler (VPA) for adjusting resource requests and limits of pods based on resource usage.

• Cluster Autoscaler automatically adjusts the size of th...read more

Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as the same type.

• Polymorphism is a fundamental concept in object-oriented programming.

• It allows a single interface to be used for different types of objects.

• Polymorphism is achieved through method overriding and method overloading.

• Example: A shape class with different subclasses like circle, square, and triangle can be treated as a shape.

• Example: A superclass A...read more

Using .NET Core and Microservices allows for scalable, modular, and efficient development of applications.

• Increased scalability by breaking down applications into smaller, independent services

• Modular architecture allows for easier maintenance and updates

• Efficient resource utilization by only deploying necessary services

• Support for cross-platform development with .NET Core

Entity Framework Code First is an approach to create database schema from code.

• Allows developers to define the database schema using C# or VB.NET code

• Enables automatic generation of database schema based on code

• Supports migrations to update the database schema as the code changes

Abstraction is the process of simplifying complex systems by focusing on the essential details.

• Abstraction involves hiding unnecessary details and exposing only the relevant information.

• It allows us to create models or representations that capture the important aspects of a system.

• Abstraction helps in managing complexity and improving understanding and communication.

• For example, in programming, classes and objects are abstractions that encapsulate data and behavior.

• In the med...read more

Containers are a lightweight, standalone executable package that includes everything needed to run a piece of software, while pods are a group of one or more containers that share resources and are scheduled together on the same host.

• Containers are individual units of software that package up code and dependencies, while pods are a higher-level concept in Kubernetes that can contain one or more containers.

• Containers are isolated from each other and communicate over network in...read more

There are two types of locators in Selenium: By class and By XPath.

• By class locator uses the HTML class attribute to locate elements.

• By XPath locator uses the XPath expression to locate elements.

• XPath locators are more flexible and powerful but slower than class locators.

• XPath can locate elements based on their attributes, text, or position in the HTML structure.

• Examples: By.className('example') and By.xpath('//div[@id='example']')

Design patterns are reusable solutions to common software problems. .NET has several built-in design patterns.

• Design patterns help in creating maintainable and scalable code.

• Some common design patterns in .NET are Singleton, Factory, Observer, and Decorator.

• Singleton pattern ensures that only one instance of a class is created.

• Factory pattern provides a way to create objects without exposing the creation logic.

• Observer pattern allows objects to be notified of changes to anoth...read more

Pub sub model is a messaging pattern where senders (publishers) of messages do not program the messages to be sent directly to specific receivers (subscribers).

• Publishers send messages to a central topic or channel without specifying the recipients

• Subscribers subscribe to the topics or channels they are interested in and receive messages from there

• Decouples the sender and receiver, allowing for more flexibility and scalability

• Examples: MQTT, Kafka, Google Cloud Pub/Sub

API test scenarios involve testing the functionality, performance, and security of APIs.

• Test the API endpoints for correct response codes (e.g., 200, 400, 500)

• Verify the API response payload for expected data and format

• Test API authentication and authorization mechanisms

• Perform load testing to assess API performance under high traffic

• Check API error handling and response messages

• Test API security vulnerabilities (e.g., SQL injection, cross-site scripting)

• Validate API integrat...read more

Patch management process involves the systematic application of patches to software systems to address vulnerabilities and improve security.

• Patch management is a critical aspect of maintaining the security and stability of software systems.

• It involves identifying vulnerabilities and applying patches to address them.

• The process typically includes steps such as vulnerability assessment, patch testing, deployment, and monitoring.

• Regular patch management helps protect against cyb...read more

Socket programming involves creating network connections between two devices using APIs.

• Socket programming is used for real-time communication between devices over a network.

• APIs like TCP and UDP are used to establish and manage these connections.

• Socket programming can be used for various applications like chat applications, online gaming, and file sharing.

• Socket programming requires knowledge of network protocols and programming languages like C, Java, and Python.

Security mechanisms in an API ensure data protection and prevent unauthorized access.

• Use authentication methods like OAuth or API keys to verify user identity

• Implement encryption to secure data transmission

• Utilize rate limiting to prevent abuse and protect against DDoS attacks

• Regularly update and patch software to address security vulnerabilities