100+ Technical Analyst Interview Questions and Answers

Program to get employee list with salary > 50k and grade above A using Java 8 stream

• Create a list of employees with their salary and grade

• Use Java 8 stream to filter employees with salary > 50k and grade above A

• Return the filtered list of employees

Optimize job scheduling code

• Use priority queue to efficiently schedule jobs

• Implement dynamic programming to optimize job sequence

• Consider parallel processing to reduce overall time

• Use efficient data structures to store job information

Security authentication implementation and delegation explained.

• Security authentication is the process of verifying the identity of a user or system.

• It involves the use of passwords, biometrics, tokens, or other methods to authenticate users.

• Delegation is the process of granting a user or system the authority to perform certain actions on behalf of another user or system.

• Examples of delegation include granting a user access to a file or folder, or allowing a system to access ...read more

Implemented microservices using Docker and Kubernetes. Used Prometheus and Grafana for API monitoring.

• Implemented microservices architecture using Docker and Kubernetes

• Used Prometheus and Grafana for monitoring API performance and availability

• Configured alerts and dashboards in Grafana for real-time monitoring

• Implemented distributed tracing using Jaeger for end-to-end visibility

• Used Istio for service mesh and traffic management

• Implemented circuit breaker pattern using Hystrix...read more

Prioritizing smartness, knowledge, and money reflects a holistic approach to success and personal growth.

• Smartness enables problem-solving and adaptability, crucial in dynamic environments.

• Knowledge is foundational; it informs decisions and enhances smartness.

• Money is a tool that can facilitate opportunities but is less valuable without smartness and knowledge.

I configured API Gateway using AWS Console and created APIs for each microservice.

• Created a REST API in API Gateway

• Configured each microservice as a resource in the API

• Created methods for each resource and integrated with the microservice

• Configured authorization and throttling settings

• Deployed the API to a stage for testing and production

• Used AWS SDKs or CLI to automate the process

LINQ statements for String and DataTable manipulations

• For String manipulations, use methods like Where, Select, OrderBy, GroupBy, etc.

• For DataTable manipulations, use methods like Where, Select, OrderBy, GroupBy, Join, etc.

• Use lambda expressions to specify the conditions for filtering, sorting, grouping, etc.

• Example: var result = myStringArray.Where(s => s.Length > 5).OrderBy(s => s);

• Example: var result = myDataTable.Where(row => row.Field<int>("Age") > 18).Select(row => row....read more

Use Sieve of Eratosthenes algorithm to optimize prime number generation.

• Implement Sieve of Eratosthenes algorithm to eliminate non-prime numbers

• Use boolean array to mark non-prime numbers

• Start with 2 and mark all its multiples as non-prime, then move to next unmarked number

• Stop at square root of the upper limit to optimize performance

To fix code issues post migrations, identify the root cause and apply appropriate fixes.

• Identify the root cause of the issue

• Check for any compatibility issues with the new environment

• Apply appropriate fixes such as code changes or configuration updates

• Test the fixes thoroughly before deploying to production

• Document the issue and the fix for future reference

Store newspapers of a company

• Create a database to store newspaper information

• Use a unique identifier for each newspaper

• Include fields for date, title, author, and content

• Implement a search function for easy retrieval

• Consider implementing a backup system for data security

Flatten array of objects to map with minimum price for each model

• Iterate through the array and create a map with model as key and minimum price as value

• If model already exists in map, update the value with minimum price

• Return the map as the output

Implement a min stack using a single stack

• Create a stack to hold the elements and another stack to hold the minimum values

• When pushing an element, check if it's smaller than the current minimum and push it to the minimum stack if it is

• When popping an element, check if it's the current minimum and pop it from the minimum stack if it is

• To get the minimum value, return the top element of the minimum stack

You can find the heavy ball among 8 balls using a balance in just 2 weighings.

• Divide the 8 balls into 3 groups: 3, 3, and 2.

• Weigh the first two groups (3 vs 3).

• If they balance, the heavy ball is in the group of 2.

• If one group is heavier, take 2 balls from that group and weigh them.

• The heavier ball will be identified in the second weighing.

CAE analysis is a computer-based simulation technique used to study the behavior of products under various conditions.

• CAE analysis helps in identifying potential design flaws and optimizing product performance.

• It can be used to simulate various scenarios such as stress, vibration, and thermal analysis.

• By using CAE analysis, organizations can reduce the time and cost involved in physical testing.

• I can contribute to product development by using CAE analysis to identify design f...read more

Find the element that appears only once in an array of strings

• Use XOR operation to find the element that appears only once

• Iterate through the array and XOR each element to find the unique element

• Example: ['apple', 'banana', 'apple', 'orange', 'banana'] should return 'orange'

The student with the second highest score is Adil, who scored 70, following Vikas with 99 and Goutham with 90.

• Score Ranking: The scores are ranked as follows: Vikas (99), Goutham (90), Adil (70), and Sam (10).

• Identifying Second Highest: To find the second highest, we can sort the scores and select the second entry.

• Data Structure: The data is stored in a dictionary format, which allows for easy access to scores by student names.

• Example: If we had scores like {'A': 50, 'B': 80,...read more

I followed various approaches like code optimization, database indexing, caching, and load balancing.

• Identified and optimized slow database queries

• Reduced network latency by implementing caching mechanisms

• Implemented load balancing to distribute traffic evenly

• Reduced code complexity and optimized algorithms

• Used profiling tools to identify performance bottlenecks

SQL query to identify missing employee IDs in a sequential range from 101 to 150.

• Use a Common Table Expression (CTE) to generate a sequence of numbers from 101 to 150.

• Join the generated sequence with the Employee table to find missing IDs.

• Example SQL query: WITH seq AS (SELECT 101 + LEVEL - 1 AS emp_id FROM dual CONNECT BY LEVEL <= 50) SELECT emp_id FROM seq LEFT JOIN Employee ON seq.emp_id = Employee.emp_id WHERE Employee.emp_id IS NULL;

Remove duplicates from a list in Python.

• Convert the list to a set to remove duplicates.

• Convert the set back to a list if needed.

• Use the built-in function 'set()' to convert the list to a set.

• Use the built-in function 'list()' to convert the set back to a list.

Exception handling is an important aspect of any project to ensure smooth functioning.

• We use try-catch blocks to handle exceptions.

• We log the exceptions to track and fix them.

• We also use custom exceptions to handle specific errors.

• We prioritize handling critical exceptions first.

• We regularly review and update our exception handling approach.

The lab is equipped with various instruments and devices for conducting technical analysis.

• Microscopes for examining samples

• Spectrophotometers for measuring light absorption

• Centrifuges for separating substances

• PCR machines for DNA amplification

• Gas chromatographs for analyzing chemical compounds

• Electrophoresis equipment for separating molecules

• pH meters for measuring acidity or alkalinity

• Incubators for growing cultures

• Autoclaves for sterilizing equipment

• Balances for weighing s...read more

Semaphore is used to control access to a resource with limited capacity while mutex is used to synchronize access to a shared resource.

• Semaphore allows multiple threads to access a resource simultaneously up to a certain limit while mutex allows only one thread to access a shared resource at a time.

• Semaphore can be used to solve the producer-consumer problem while mutex can be used to solve the critical section problem.

• Semaphore can be binary or counting while mutex is always...read more

Hibernate is configured in a Spring project using the HibernateTemplate or EntityManagerFactory.

• Hibernate can be configured in a Spring project by defining the necessary beans in the application context XML file.

• The HibernateTemplate class can be used to perform CRUD operations on the database using Hibernate.

• Alternatively, the EntityManagerFactory can be configured to work with Hibernate in a Spring project.

• The Hibernate properties such as database connection details, dialec...read more

Debugging long-running SQL queries in GCP BigQuery involves analyzing execution plans, optimizing queries, and monitoring performance.

• Use the BigQuery Query Execution Details to analyze the execution plan and identify bottlenecks.

• Check for large data scans; use SELECT statements to limit the amount of data processed.

• Optimize joins by ensuring that you are using the correct join types and filtering data early.

• Consider using partitioned tables to improve query performance on la...read more

Describe the colors using textures, temperatures, and emotions.

• Describe red as hot like fire or angry like a bull

• Describe blue as cold like ice or calm like the ocean

• Describe yellow as bright like the sun or happy like a smile

• Use textures like smooth, rough, soft, or hard to describe colors

Positive and negative points refer to the advantages and disadvantages of a particular situation or decision.

• Positive points are the benefits or advantages of a situation or decision.

• Negative points are the drawbacks or disadvantages of a situation or decision.

• Positive points can include increased revenue, improved efficiency, or enhanced customer satisfaction.

• Negative points can include increased costs, decreased productivity, or negative impact on the environment.

• It is impo...read more

The bank has historically focused on conservative investments and has recently expanded into digital banking services.

• Historically focused on conservative investments to minimize risk

• Recently expanded into digital banking services to cater to changing customer preferences

• Has a strong presence in the mortgage and lending market

• Has been actively involved in mergers and acquisitions to expand market share