RailsFactory Developer Operations Interview Questions and Answers

Q1. What is the implementation of Merge Sort in Java?
Ans. 
Merge Sort is a divide and conquer algorithm that divides the input array into two halves, recursively sorts them, and then merges the sorted halves.
• Divide the input array into two halves

• Recursively sort the two halves

• Merge the sorted halves back together
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Q2. What is the implementation of the Quick Sort algorithm in Java?
Ans. 
Quick Sort is a popular sorting algorithm that uses a divide-and-conquer approach to sort elements in an array.
• Choose a pivot element from the array.

• Partition the array into two sub-arrays: elements less than the pivot and elements greater than the pivot.

• Recursively apply the same process to the sub-arrays.

• Combine the sorted sub-arrays to get the final sorted array.
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Q1. Design tinyurl system design
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Q1. How many ip addresses are there
Ans. 
There are approximately 4.3 billion IPv4 addresses and 340 undecillion IPv6 addresses.
• There are approximately 4.3 billion IPv4 addresses.

• IPv4 addresses are 32-bit numbers, allowing for a total of 2^32 addresses.

• There are 340 undecillion IPv6 addresses.

• IPv6 addresses are 128-bit numbers, allowing for a total of 2^128 addresses.
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Q2. What command you use to troubleshoot network problems
Ans. 
To troubleshoot network problems, the 'ping' command is commonly used.
• Use 'ping' command to check connectivity between devices

• Check for packet loss and latency with 'ping'

• Use 'traceroute' command to identify network hops and latency issues
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30 question -30 min,topics - profit or loss , time work distance ,time speed ,upstreaam downstream percentage ,probability

1.30
Basic profit/loss,percentages questions

Q1. 1 hr Asked about closures, hoisting, map, hash
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Q2. Closures and scopes
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Q3. Dsa 2 sum problem
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Q4. Projects and basicjs
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Q1. Basic related to location, timings
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Easy aptitude, 30 min with 20 question

Online test which consists of java, angular, micro services related questions

Q1. Difference between static and default methods
Ans. 
Static methods belong to the class itself, while default methods are part of an interface in Java.
• Static methods can be called without creating an instance of the class, while default methods are used to provide a default implementation in interfaces.

• Static methods are defined using the 'static' keyword, while default methods are defined using the 'default' keyword in Java.

• Static methods cannot be overridden in subclas...read more
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Q1. Basic resume based questions
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Q2. Explain your internship experience
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Q1. Basic resume based questions
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