ApplikonTech It Solution Interview Questions and Answers

Q1. Difference between state and props in ReactJS.
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Q2. Lazy loading in ReactJS.
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Q1. Protocols used for communication.
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Q2. How socket communication works ?
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There were three coding questions.

Q1. Could you provide a thorough explanation of the project?
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Q2. OOps Concepts and question from the technical subjects
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Q3. Why Spring Boot
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Q4. JWT Authentication
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Q5. Docker and Kubernetes
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Medium leetcode question on array list

Q1. Core java and collections, exceptions and threading
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Q2. Core java collections
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Q3. Multi threading
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Q4. Executor framework
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Q1. Threading related questions
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Here’s a simple framework to approach a case study effectively:


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Case Study Framework

1. Understand the Problem

Read the case thoroughly and identify the key issue.

Ask clarifying questions if needed (if in a live setting).

Summarize the problem in your own words.



2. Analyze the Situation

SWOT Analysis (Strengths, Weaknesses, Opportunities, Threats)

Identify relevant stakeholders.

Gather data or key insights from the case text.



3. Identify Alternatives

Brainstorm possible solutions to the problem.

Consider multiple approaches (e.g., short-term vs. long-term solutions).



4. Evaluate the Alternatives

Weigh the pros and cons of each solution.

Assess feasibility, costs,

Q1. What are the common performance issues that can occur in a system?
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Common performance issues in a system include slow response times, high resource usage, bottlenecks, and crashes.
• Slow response times can be caused by inefficient code, network latency, or overloaded servers.

• High resource usage can lead to system slowdowns and crashes, often caused by memory leaks or inefficient algorithms.

• Bottlenecks occur when a component of the system becomes a limiting factor, such as a database ser...read more
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Q2. What is your experience with software bug fixing?
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I have experience in identifying and resolving software bugs through thorough testing and collaboration with developers.
• Identifying bugs by reproducing issues reported by users

• Collaborating with developers to understand root cause of bugs

• Testing bug fixes to ensure they are effective

• Utilizing bug tracking tools like Jira or Bugzilla

• Experience with regression testing to prevent reoccurrence of bugs
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Shortcut Tips for Coding Tests: 1. Master the Basics: Familiarize yourself with arrays, strings, loops, and conditional statements. 2. Learn Patterns: Concentrate on sliding window, two-pointer techniques, recursion, and divide-and-conquer methods. 3. Use Standard Algorithms: Study breadth-first search (BFS), depth-first search (DFS), sorting algorithms, and dynamic programming principles. 4. Understand Data Structures: Practice with stacks, queues, linked lists, and trees. 5. Practice Edge Cases: Consider scenarios involving empty inputs, duplicates, and large datasets. 6. Write Pseudocode: Outline your plan before starting to code. 7. Optimize Early: Always strive for efficiency in your solutions.

Q1. Filters in Tableau
Ans. 
Filters in Tableau allow users to focus on specific data points within a visualization.
• Filters can be applied to dimensions or measures to narrow down the data being displayed.

• Users can use various types of filters such as quick filters, context filters, and data source filters.

• Filters can be used to show or hide data based on specific criteria, such as date ranges or categories.

• Example: Applying a filter to show only
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Q2. Blending and joins in Tableau
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Blending and joins in Tableau allow users to combine data from multiple sources for analysis and visualization.
• Blending is used when data sources have a common field but different levels of granularity.

• Joins are used when data sources have a common field and the same level of granularity.

• Blending creates a virtual join, while joins physically combine the data.

• Examples: Blending sales data from Excel with customer data ...read more
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Q3. LOD expressions in Tableau
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LOD expressions in Tableau allow you to compute values at different levels of detail in a visualization.
• LOD expressions include FIXED, INCLUDE, and EXCLUDE functions

• FIXED LOD expressions compute values at a specific level of detail regardless of the visualization level

• INCLUDE LOD expressions compute values at the specified level of detail and include other dimensions in the visualization

• EXCLUDE LOD expressions compute ...read more
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Q4. Different types of Joins in SQL, difference between TRUNCATE and DELETE
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Different types of joins in SQL include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN. TRUNCATE is faster than DELETE as it removes all rows at once.
• Types of joins: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN

• TRUNCATE: removes all rows from a table without logging individual row deletions

• DELETE: removes specific rows from a table and logs each row deletion

• TRUNCATE is faster than DELETE as it does not log individual
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Q1. About my technical experience
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Q2. What will you do if you get the offer from multiple companies
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Q1. Introduction, be prepared to have knowledge on your resume
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Q2. Mathematical questions like percentage
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Q3. Critical thinking. They asked a question with a given situation what you'll do .
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Q4. The past 4 days been climate be stroming . And current was cut off due to rain and flood , you have a important assignment to finish, what you'll do
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