Citrix Software Development Engineer 1 Interview Questions and Answers

Question related to operating system and computer network

Q1. Traverse all child nodes in tree
Ans. 
Traverse all child nodes in a tree data structure
• Use depth-first or breadth-first traversal algorithms

• Recursively visit each child node starting from the root node

• Consider using a stack or queue data structure for traversal

• Example: Traverse all nodes in a binary tree
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Q1. Question related to cloud and oops
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Q1. Question related to my background and how web site work
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Q1. Basics of oops, .net framework and .net core
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Q2. Sql query for student department id
Ans. 
SQL query to retrieve student department id.
• Use SELECT statement to retrieve data

• Specify the columns to be selected, including the department id column

• Specify the table where the student data is stored

• Use WHERE clause to filter the results based on student information
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Q3. Solid principles and design patterns
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Q1. Asked to code palindrome
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Q2. Code duplicate string from main string and get index of sub string
Ans. 
Code to find index of sub string in main string and duplicate the sub string
• Use a loop to iterate through the main string and check for the sub string

• If sub string is found, duplicate it and store the index

• Return the index of the duplicated sub string
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Q1. Manager asked me to code the count index of substring and sum of substring
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Q2. Questions as HR informed, it was worst and all interviews were scheduled at night time.he was more technical than the second round team lead instead of asking manager round
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Written coding test
Basic coding questions
Only c c++
Easy level

Q1. Bit manipulation
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Q2. Rtos concepts,c coding concepts like structures,pointers
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Q1. About projects more detailly
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Q2. About memory management and layout in c
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In first round 4 coding question like 1 dsa 2 database and one is api and question is very simple . coding round was conducted in hackerrank

Q1. DSA QUESTION LIKE TREE AND GRAPH
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Q2. DP AND SORTING APPROACH
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Again same but dsa question and oops concept in deep level

It included aptitude, technical and coding questions

Q1. Questions on SQL(Joins)
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Q2. Questions on arrays, substrings
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Q1. Location preferred
Ans. 
Remote work preferred, open to occasional travel
• Remote work preferred

• Open to occasional travel

• Flexible with location
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Q2. Family background
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Q1. Basic java fundamentals
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Q2. Spring boot,sql
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Q1. Some technical questions from manager
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Q2. Some challenges or scenario based questions
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Q1. Salary discussion mostly
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Q2. Benifts that they offer with TR
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Q1. Asked linq question and answered correctly with little modification, still was not impressed
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Q2. Expections were little high.
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Q1. What is the inheritance?
Ans. 
Inheritance is a mechanism in object-oriented programming where a class inherits properties and behaviors from another class.
• Allows a class to inherit attributes and methods from another class

• Promotes code reusability and reduces redundancy

• Creates a parent-child relationship between classes

• Derived class can override or extend the functionality of the base class
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Q2. What are the types of joins in mysql
Ans. 
Types of joins in MySQL include inner join, left join, right join, and full join.
• Inner join: Returns rows when there is a match in both tables.

• Left join: Returns all rows from the left table and the matched rows from the right table.

• Right join: Returns all rows from the right table and the matched rows from the left table.

• Full join: Returns rows when there is a match in one of the tables.
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Q1. How to handle multiple api's
Ans. 
Use a centralized API gateway to manage and route requests to multiple APIs efficiently.
• Implement a centralized API gateway to handle incoming requests and route them to the appropriate API based on the endpoint.

• Utilize API management tools like Apigee, Kong, or AWS API Gateway to manage and monitor multiple APIs.

• Consider implementing a caching layer to improve performance and reduce the number of requests to external
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Q2. What does strstr function do?
Ans. 
strstr function searches for a substring within a string and returns a pointer to the first occurrence of the substring.
• Used in C programming language

• Syntax: char *strstr(const char *haystack, const char *needle)

• Example: char *str = strstr("hello world", "world")
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