Black Box Corporation Graduate Engineer Interview Questions and Answers

Basic coding question and JavaScript in depth questions

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Q1. Expected Salary
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Q2. Why do you choose Apexon?
Ans. 
I choose Apexon for its innovative technology, strong company culture, and opportunities for growth.
• Innovative technology: Apexon is known for its cutting-edge solutions and commitment to staying ahead of industry trends.

• Strong company culture: I value the emphasis Apexon places on teamwork, collaboration, and employee development.

• Opportunities for growth: Apexon offers a clear path for career advancement and continuou
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This round was dependent on the end client. It lasted for approximately one hour and involved a technical assessment from the client side conducted by a panel of three interviewers. The panel was knowledgeable, attentive, and cooperative, with questions that were relevant to the work experience.

Q1. What are your salary expectations?
Ans. 
My salary expectations are in line with industry standards for a Senior Engineer position.
• Research industry standards for Senior Engineer salaries

• Consider my level of experience and skills

• Factor in the cost of living in the area where the job is located
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Q2. Are you comfortable with the designated work location and with working at the client site?
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Yes, I am comfortable with the designated work location and working at the client site.
• I have experience working at client sites in previous roles

• I am adaptable and can work effectively in different environments

• I am willing to travel if required for the job
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Q3. Are you currently serving a notice period, and is that notice period negotiable?
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Yes, I am currently serving a notice period of 1 month, and it is negotiable.
• Yes, I am currently serving a notice period of 1 month.

• I am open to discussing the notice period and negotiating if needed.

• I believe in maintaining open communication with my current employer during this transition period.
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Q4. What is the earliest date you would be able to join after receiving the offer letter?
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I can join within 2 weeks of receiving the offer letter.
• I can start within 2 weeks of receiving the offer letter.

• I need a 2-week notice period before joining.

• My earliest availability is 2 weeks after receiving the offer.
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Q1. Difference between deep and shallow copy
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Deep copy creates a new object and recursively copies all nested objects, while shallow copy creates a new object and copies the references to nested objects.
• Deep copy duplicates all levels of the object hierarchy, ensuring that changes in the copied object do not affect the original object.

• Shallow copy only duplicates the top-level object, so changes in the copied object may affect the original object.

• Deep copy is mor...read more
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Q2. Ways to set values in form groups
Ans. 
Ways to set values in form groups
• Use setValue() method to set values in form groups

• Use patchValue() method to set values in form groups

• Use reset() method to set values in form groups
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Q3. How to add dynamic component in view
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To add a dynamic component in a view, use a framework or library that supports dynamic rendering and component creation.
• Use a framework like React or Angular that allows for dynamic component creation

• Create a component factory or use a component resolver to dynamically create and render components

• Pass data or props to the dynamic component to customize its behavior

• Update the view or component tree to include the dynami
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Q1. All Concurrent Utility Classes and their uses.
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Concurrent Utility Classes provide support for concurrent programming in Java.
• ConcurrentHashMap: Thread-safe implementation of Map interface.

• CopyOnWriteArrayList: Thread-safe implementation of List interface.

• CountDownLatch: Synchronization aid that allows one or more threads to wait until a set of operations being performed in other threads completes.

• Semaphore: Controls the number of threads that can access a shared re...read more
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Q2. Basic SQL queries, mostly from Joins, Grouping
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Q3. Core Java, Java 8
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Q1. Power BI DAX calculations
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Q1. RLS Implementation
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