Brennan IT Interview Questions and Answers

To create a pipeline in Databricks, you can use Databricks Jobs or Apache Airflow for orchestration.

• Use Databricks Jobs to create a pipeline by scheduling notebooks or Spark jobs.

• Utilize Apache Airflow for more complex pipeline orchestration with dependencies and monitoring.

• Leverage Databricks Delta for managing data pipelines with ACID transactions and versioning.

An abstract class is a class that cannot be instantiated and may contain abstract methods that must be implemented by its subclasses.

• Cannot be instantiated directly

• May contain abstract methods

• Used as a blueprint for other classes

Abstraction is the process of hiding complex details and showing only the essential features of an object or system.

• Abstraction allows us to focus on what an object does, rather than how it does it

• It helps in simplifying complex systems by breaking them down into smaller, more manageable parts

• Examples of abstraction include using a car without needing to understand its internal combustion engine, or using a smartphone

QuickSort is one of the best sorting algorithms with an average time complexity of O(n log n).

• QuickSort is a divide and conquer algorithm that works by selecting a 'pivot' element and partitioning the array around the pivot.

• It has an average time complexity of O(n log n) and a worst-case time complexity of O(n^2).

• Example: ['apple', 'banana', 'cherry', 'date', 'fig'] can be sorted using QuickSort.

• Example: ['3', '1', '4'...read more

Bubble sorting has a time complexity of O(n^2) for a sorted list.

• Bubble sorting has a worst-case time complexity of O(n^2) for a sorted list.

• The time complexity does not change even if the list is already sorted.

• Example: If we have a sorted list of size n, bubble sorting will still take O(n^2) time.

Yes, I have been to multiple states other than Jharkhand.

• I have traveled to states like Maharashtra, Karnataka, and Tamil Nadu for work and leisure.

• I have visited tourist destinations in states like Rajasthan, Kerala, and Himachal Pradesh.

• I have family in states like Uttar Pradesh, Bihar, and West Bengal, which I have visited multiple times.

Agile values include individuals and interactions over processes and tools, while Scrum values include commitment, courage, focus, openness, and respect.

• Agile values prioritize individuals and interactions over processes and tools

• Scrum values include commitment, courage, focus, openness, and respect

• Scrum ceremonies include Sprint Planning, Daily Standup, Sprint Review, and Sprint Retrospective

• Story points are a unit of...read more

As a project manager, I prepare various documents such as project plans, schedules, budgets, risk assessments, and progress reports. I contribute by leading the team, managing resources, and ensuring project success.

• Prepare project plans outlining scope, objectives, deliverables, and timelines

• Create schedules to allocate tasks and track progress

• Develop budgets to manage project costs effectively

• Conduct risk assessments...read more

Provide clear expectations, offer support and training, provide feedback and recognition, set goals and milestones.

• Clearly communicate expectations and goals to the resource.

• Offer support and training to help the resource improve their skills and knowledge.

• Provide regular feedback and recognition for progress made.

• Set specific goals and milestones to track improvement.

• Create a development plan with the resource to addr...read more

Scrum of Scrums is a scaled agile framework where multiple Scrum teams coordinate their work. PI planning is a key event in SAFe where teams plan their work for the upcoming Program Increment.

• Scrum of Scrums involves representatives from each Scrum team meeting regularly to discuss dependencies and progress.

• PI planning is a two-day event where teams align on their objectives, dependencies, and priorities for the upcomi...read more

I implemented process improvements and streamlined workflows to reduce lead times by 20%.

• Analyzed current processes to identify bottlenecks

• Implemented automation tools to speed up tasks

• Trained team members on efficient time management techniques

• Collaborated with suppliers to optimize supply chain logistics

I have successfully handled difficult stakeholders by actively listening, addressing concerns, and finding common ground.

• Active listening to understand their concerns and perspectives

• Addressing their concerns with empathy and professionalism

• Finding common ground and working towards a mutually beneficial solution

Improving lead time in fulfillment involves optimizing processes, reducing bottlenecks, and enhancing communication.

• Implementing lean manufacturing principles to streamline operations

• Utilizing technology such as automation and inventory management systems

• Improving forecasting accuracy to better anticipate demand

• Enhancing communication between departments to reduce delays

• Regularly reviewing and optimizing the supply cha

I have improved ER campaigns by analyzing data, implementing targeted strategies, and collaborating with cross-functional teams.

• Analyzed data to identify trends and areas for improvement

• Implemented targeted strategies based on data analysis

• Collaborated with cross-functional teams to ensure campaign success