Synchronoss Technologies Interview Questions and Answers

Q1. How are Hashes implemented
Ans. 
Hashes are implemented using hash functions to map data to unique fixed-size values, typically used for fast data retrieval.
• Hash functions are used to generate a unique hash value for each input data

• Hash tables use these hash values as keys to store and retrieve data efficiently

• Common hash functions include MD5, SHA-1, and SHA-256

• Hash collisions can occur when different inputs produce the same hash value
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Q2. Explain any one design pattern with example
Ans. 
Singleton design pattern ensures a class has only one instance and provides a global point of access to it.
• Ensure a class has only one instance by providing a global access point to it

• Lazy initialization to create the instance only when needed

• Thread-safe implementation to handle multiple threads accessing the instance

• Commonly used in logging, caching, database connections
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Q1. Project implementation details
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Q2. Basic SQL queries
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Q1. What are singleton and a leetcode Problem with it
Ans. 
A singleton is a design pattern that restricts the instantiation of a class to one object.
• Singleton pattern ensures that a class has only one instance and provides a global point of access to it.

• Commonly used in scenarios where only a single instance of a class is needed, such as database connections or logging.

• Leetcode Problem: Implement a Singleton Class - Design a class that has a method getInstance() which returns ...read more
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Basic Java programming

Q1. SQL related questions
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