TEKsystems React Js Frontend Developer Interview Questions and Answers

Q1. Questions on core java, Collections, Oops concepts
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Q1. Explain singleton design pattern
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Singleton design pattern ensures a class has only one instance and provides a global point of access to it.
• Ensures a class has only one instance by providing a global access point to it

• Uses a private constructor to restrict instantiation of the class

• Provides a static method to access the single instance

• Commonly used in scenarios where only one instance of a class is needed, such as database connections or configuration
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Q1. Write SELECT query as per requirement
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Write SELECT query as per requirement
• Understand the requirement and identify the tables to be queried

• Select the columns to be retrieved

• Apply filters and sorting as per requirement

• Use joins if necessary

• Test the query for accuracy
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Q2. Pseudo code for the ALV
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ALV is a tool used to display data in tabular form in SAP systems.
• ALV stands for ABAP List Viewer

• It is used to display data in a tabular format

• It provides various features like sorting, filtering, grouping, etc.

• ALV can be used in both interactive and batch processing modes
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Q3. Difference between Domain and Data element
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Domain refers to a specific area of knowledge or expertise, while data element is a single piece of information within a domain.
• Domain is a broader concept that encompasses multiple data elements.

• Data element is a specific piece of information within a domain.

• For example, in the domain of medicine, 'patient name' and 'blood pressure' are data elements.

• While the domain itself is 'medicine' which includes various data el...read more
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Q4. What is the use of TMG
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TMG stands for Threat Management Gateway. It is a network security tool used for web protection, firewall, and VPN.
• TMG provides protection against malware, viruses, and other online threats.

• It can be used as a firewall to control network traffic and prevent unauthorized access.

• TMG also offers VPN connectivity for remote access to the network.

• It is commonly used in enterprise environments for secure web access and netwo
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Q1. Projects I have worked on
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Q2. What is your job role
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Q3. What all parts of software development you were part of
Ans. 
I have been part of various stages of software development including requirements gathering, design, development, testing, and deployment.
• Participated in requirement gathering sessions with clients to understand their needs

• Contributed to the design phase by creating technical specifications and architecture diagrams

• Developed software using various programming languages and frameworks

• Performed unit testing and integrati...read more
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Q1. Previous salary
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Q2. What is expectation
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Expectation is a belief or hope about something that is likely to happen in the future.
• Expectation is a mental state that involves anticipating a certain outcome or result.

• It can be based on past experiences, assumptions, or predictions.

• Expectations can be realistic or unrealistic, and can lead to disappointment or satisfaction depending on the outcome.

• For example, a student may have the expectation of getting an A on ...read more
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Such a nice experience

Such a nice experience

Q1. Covered LinkedLists and Trees
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Q1. Cultural Assessment Round
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Test will be in hacker rank there would be a difficulty level between easy to medium

Q1. Question will be from data structure and easy to medium level of the programming laanguage question
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Q1. This is just to check your english ability
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Q1. OOP, SQL, Collection, algorithms, threads
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Q1. Project amd Advanced C++ concepts
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C++ coding questions and logical questions