Apple Interview Questions and Answers for Freshers

Q1. What is parquet file format
Ans. 
Parquet is a columnar storage file format optimized for use with big data processing frameworks, enabling efficient data compression and encoding.
• Columnar Storage: Parquet stores data in columns rather than rows, which improves read performance for analytical queries.

• Efficient Compression: Parquet supports various compression algorithms (e.g., Snappy, Gzip) to reduce storage space and improve I/O performance.

• Schema Evo...read more
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Q2. Join on keys, data models relationship and normalisation technique
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Q1. Interview asked about strengths and weaknesses
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Q1. Questions were about coding
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Q1. Apple repair center
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Q2. Apple repair reledet
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Q1. Apple repair center
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Q2. Only apple product required
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Q1. Reverse a string
Ans. 
Reverse a string by iterating through the characters and swapping them
• Create a function that takes a string as input

• Initialize two pointers, one at the beginning and one at the end of the string

• Swap the characters at the two pointers and move them towards the center until they meet
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Hackerrank test, it was simple cuz intern

Q1. They asked to code a website
Ans. 
A simple website can be created using HTML, CSS, and JavaScript to display content and interact with users.
• Use HTML for structure: Example - <div>, <h1>, <p> tags.

• Style with CSS: Example - body { background-color: lightblue; }

• Add interactivity with JavaScript: Example - document.getElementById('myBtn').onclick = function() { alert('Hello!'); };

• Consider responsive design: Use media queries to adjust la...read more
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Q2. They asked about projects
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Q3. Asked about more projects
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Q4. Asked about C, C++, and other languages, and was asked in detail about mroe technical concepts
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Q1. Merge two sorted arrays to give a sorted array SV randomization constraints Code to generate sequence of powers of 2
Ans. 
Merge two sorted arrays to give a sorted array and generate sequence of powers of 2 using SV randomization constraints.
• Create a new array to store the merged result

• Use two pointers to iterate through the two sorted arrays and compare elements

• Add the smaller element to the new array and move the pointer for that array

• Continue this process until all elements are merged

• To generate sequence of powers of 2, use SV randomiza...read more
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