Tech Mahindra Senior Software Engineer Interview Questions, Process, and Tips

Transformer architecture is a neural network model based on self-attention mechanism for sequence-to-sequence tasks.

• Transformer architecture is composed of encoder and decoder layers.

• Self-attention mechanism allows each word in a sequence to attend to all other words in the sequence.

• This mechanism helps capture long-range dependencies in the input data.

• Example: Google's BERT and OpenAI's GPT models are based on transfo

React hooks are functions that let you use state and lifecycle features in functional components.

• useEffect is a hook that allows you to perform side effects in function components.

• It takes two arguments: a function to run and an array of dependencies.

• The effect runs after the render and can be used for data fetching, subscriptions, or manually changing the DOM.

• If the dependencies array is empty, the effect runs only on...read more

Error handling in Ansible involves using various modules and strategies to manage and respond to errors during playbook execution.

• Use the 'failed_when' directive in tasks to specify conditions that should result in a task failure.

• Utilize the 'ignore_errors' directive to continue executing tasks even if errors occur.

• Implement error handling with 'rescue' and 'always' blocks in playbooks to handle errors and cleanup task...read more

Pod is ephemeral due to its temporary nature and dynamic lifecycle.

• Pods are designed to be easily created, destroyed, and replaced.

• Pods do not have persistent storage by default.

• Pods are scheduled and managed by the Kubernetes control plane.

• Pods can be automatically rescheduled to different nodes in case of failures.

Access tiers in Azure Storage include hot, cool, and archive tiers.

• Hot access tier: Optimized for frequently accessed data with higher storage costs.

• Cool access tier: Optimized for infrequently accessed data with lower storage costs.

• Archive access tier: Optimized for rarely accessed data with the lowest storage costs.

• Data in the archive tier may have longer retrieval times compared to hot and cool tiers.

Developed a web-based project management tool for tracking tasks and deadlines

• Created user-friendly interface for adding, editing, and deleting tasks

• Implemented notifications for upcoming deadlines

• Integrated with calendar API for scheduling tasks

I will handle errors in prod environment by implementing proper error logging, monitoring, and alerting systems.

• Implement comprehensive error logging to track errors and their root causes

• Set up monitoring tools to detect errors in real-time and alert the team

• Establish a process for prioritizing and resolving errors based on impact and severity

• Regularly review and analyze error logs to identify patterns and prevent futu

Steps for updating a build and performing rollback

• Create a backup of the current build before making any changes

• Update the build with the necessary changes and test thoroughly

• If issues are found, identify the cause and plan for rollback

• Rollback by restoring the backup of the previous build

• Communicate the rollback to the team and document the process