KC Overseas Education Software Developer Interview Questions and Answers

Q1. Data structures
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Q1. System Design fundamentals
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Q1. System Design questions
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Q1. What do you think about the negative news going around the company
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Q1. Why join this company
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Q1. Explain about Android lifecycle
Ans. 
Android lifecycle refers to the series of states that an activity or fragment goes through from creation to destruction.
• Android lifecycle includes states like onCreate, onStart, onResume, onPause, onStop, onDestroy, etc.

• Activities and fragments transition between these states based on user interactions and system events.

• Understanding Android lifecycle is crucial for managing resources, saving state, and handling config...read more
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Q2. Explain about fragment lifecycle
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Fragment lifecycle refers to the series of events that occur in the lifespan of a fragment in an Android app.
• Fragments go through various states like created, started, resumed, paused, stopped, and destroyed.

• Fragment lifecycle methods include onCreate(), onCreateView(), onResume(), onPause(), onStop(), onDestroy(), etc.

• Fragment lifecycle is closely tied to the hosting activity's lifecycle.

• Understanding fragment lifecyc...read more
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Q1. Basic Questions based on pervious project
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Q1. Question on Binary trees: if symmetric, easy string question using hashmap
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Q2. If we are hosting a live test how to show real time ranking, HLD for this and what algorithms can we use
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Q1. Database schema design for a feature where user can be free, gold, platinum.
Ans. 
Use a user table with a column for user type (free, gold, platinum)
• Create a user table with columns for user ID, name, email, user type

• Use a separate table for user types with columns for type ID and type name

• Establish a one-to-many relationship between user and user type tables

• Example: user table - user_id, name, email, type_id; user_type table - type_id, type_name
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Q1. HLD for live rank dashboard for a live test where millions of users are doing test
Ans. 
High-level design for a live rank dashboard for a live test with millions of users.
• Use a scalable architecture to handle millions of users concurrently.

• Implement real-time data processing to update ranks dynamically.

• Utilize caching mechanisms to improve performance and reduce load on the database.

• Design a user-friendly interface with intuitive data visualization.

• Include features for filtering, sorting, and searching to
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Aptitude test with situations based questions

Q1. About past experience,Case studies
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Psychometric test conducted before interview with HR.

Q1. With HR and then finally with the MD
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Q1. Past exp, academic exp, alignment with what I wanted to do
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This round was more on the conversation skills

The coding round had some let code problems on SQL and Python

Q1. Why planning to change to this industry
Ans. 
I am passionate about the industry and believe my skills and experience align well with the opportunities it offers.
• Passion for the industry and desire to make a positive impact

• Alignment of skills and experience with the industry's needs

• Excitement about the growth potential and opportunities in the industry
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Q2. Tell me about your team leading experiance
Ans. 
I have over 5 years of team leading experience in retail and hospitality industries.
• Managed a team of 15 employees in a busy restaurant, delegating tasks and ensuring smooth operations

• Provided training and support to new team members to ensure they were able to perform their roles effectively

• Implemented new procedures to improve efficiency and customer satisfaction

• Handled scheduling, performance evaluations, and confli
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Q1. Same as above q1
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Q2. Same as above q2
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