Sierra ODC Software Engineer Trainee Interview Questions and Answers

Q1. Oops Concepts, Coding Merging Arrays
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Q2. Reverseg String, Function to Search Element in Linked list
Ans. 
Reverse a string using a loop or built-in function. Search for an element in a linked list using traversal.
• To reverse a string, you can use a loop to iterate through the characters and build a new string in reverse order.

• To search for an element in a linked list, you can traverse the list starting from the head node and compare each node's value with the target element.
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Q1. DSA Array, String and Hashmap questions
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Q2. Functional programming java questions
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Q1. Spring and spring boot related
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Q2. HLD scenario level questions
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Q3. SQL queries nested and joins
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Q4. DB related questions and experience level questions and previous project situations related questions
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Q5. Security level questions like XSS vulnerability and SQL injection
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Basic Speed and Train questions.

Arrays, strings and map related programs

Tests put thinking process

Q1. Java related like polymorphism, maps and oops concepts
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Q2. Sql queries to get 2nd highest
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Q1. Ambition and what you want to do
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Q2. Career goals
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Q1. Write a Simple GET, POST Flask Application?
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Q2. Assign Values to a Cookie - Flask Application
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- Convert a given input of keys-values to value-keys using Python

Q1. Introducing your self and project
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Q2. Severity and priority
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Q3. Smoke and sanity testing
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Q4. Scenario base question if find bug before release
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Basic OOP questions for python programming language

Q1. What's abstraction
Ans. 
Abstraction is the concept of hiding complex implementation details and showing only the necessary information to the user.
• Abstraction allows users to focus on what an object does instead of how it does it

• It helps in reducing complexity and improving efficiency in software development

• Example: In object-oriented programming, abstract classes and interfaces are used to achieve abstraction
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Q2. What's the difference between SQL and NoSQL database
Ans. 
SQL databases are relational databases with structured data, while NoSQL databases are non-relational databases with flexible, unstructured data.
• SQL databases use structured query language for defining and manipulating data, while NoSQL databases use different query languages or APIs.

• SQL databases are table-based, with a predefined schema, while NoSQL databases are document, key-value, wide-column, or graph-based.

• SQL d...read more
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Q1. Reverse a linked list
Ans. 
Reverse a linked list by changing the direction of pointers
• Start with three pointers: current, prev, and next

• Iterate through the linked list, updating pointers to reverse the direction

• Update the head of the linked list to the last node after reversing
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Q2. Implement binary search algorithm
Ans. 
Binary search algorithm efficiently finds the target value in a sorted array.
• Start by defining the low and high indices of the array.

• Calculate the mid index and compare the target value with the value at mid.

• If target is less than mid value, update high to mid-1; if greater, update low to mid+1.

• Repeat until target is found or low is greater than high.
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Q1. Brief Introduction and basic questions
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Q2. Future plans and how am i going to achieve them
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Q1. Projects worked on
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Q2. Coding leetcode easy/medium questions
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Q1. Tell me about yourself
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Q1. Design Least recently used cache.
Ans. 
Design a Least Recently Used cache system.
• Implement a doubly linked list to keep track of the order of usage of cache items.

• Use a hashmap to store key-value pairs for quick access to cache items.

• When a new item is accessed, move it to the front of the linked list. If the cache is full, remove the least recently used item from the end of the list.
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