ZeMoSo Technologies Sdet Automation Test Engineer Interview Questions and Answers

30min Pseudo Code,Ratio and Proportion

1 hour Array,HashMap

Q1. Write a program a string is Anagram or not
Ans. 
Program to check if a string is an Anagram or not
• Create a function that takes in two strings as input

• Sort the characters in both strings and compare if they are equal

• Return true if they are anagrams, false otherwise
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Q2. How to connect mongodb with database
Ans. 
To connect MongoDB with a database, you need to use the MongoDB URI and a MongoDB client library.
• Use the MongoDB URI to specify the connection details such as host, port, username, password, and database name

• Install a MongoDB client library like Mongoose for Node.js or pymongo for Python

• Use the client library to establish a connection to the MongoDB database and perform CRUD operations
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Q3. What is event listener
Ans. 
An event listener is a function that waits for a specific event to occur and then triggers a response.
• Event listeners are commonly used in web development to handle user interactions like clicks, keypresses, etc.

• They are attached to specific elements and listen for events to occur on those elements.

• Once the event occurs, the listener executes a callback function to respond to the event.

• Example: Adding a click event lis...read more
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Q4. What is polymorphism
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.
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Q1. How to reverse a string without using extra space
Ans. 
Use two pointers to swap characters in place
• Initialize two pointers, one at the beginning of the string and one at the end

• Swap characters at the two pointers and move them towards each other until they meet or cross

• Repeat the process until the entire string is reversed
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Q2. Find a number that not present in array in O(N) time complexity array contain only 0 to n numbers
Ans. 
Use bitwise XOR operation to find the missing number in O(N) time complexity.
• Iterate through the array and XOR all the elements with their indices and the array length.

• The missing number will be the result of XORing all the elements with their indices and the array length.
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Q3. Why should you join this company
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Q4. How many interview have you give previously and why you get rejected
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Q1. Rest vs soap validation vs verification explain project
Ans. 
REST is lightweight, SOAP is protocol-based. Validation ensures requirements are met, verification ensures correctness. Project explanation needed.
• REST is lightweight and uses standard HTTP methods like GET, POST, PUT, DELETE. SOAP is protocol-based and uses XML for communication.

• Validation ensures that the product meets the requirements and specifications. Verification ensures that the product is correct and error-fre...read more
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Practice atleast 20 questions for every topic.

Q1. Introduction Achievement background education
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Q2. Ask about technical skills and ask questions about projects
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3 Question based on strings, array & LinkedList

Q1. Sql queries & RDBMS Concepts Java core Collection Complexity Pattern program
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Q1. Linked list Map Arraylist Sql Jvm Acid properties
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Q1. Why you want to join Skills What is your best handled situation
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50 Questions in 1 hour

Pattern and basic programming questions

Q1. Basic Java, SQL, and project-related questions
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Simple String or list releted questions for Arranging a string some conditions wise

Q1. Count number after decimal value What is decorator What is abstraction in python
Ans. 
To count number after decimal value in Python, use string manipulation or math module.
• Use string manipulation to count number of digits after decimal point

• Use math module to round off the number and then subtract the original number to get the digits after decimal point

• Example: num = 3.14159, str_num = str(num), decimal_index = str_num.index('.') + 1, digits_after_decimal = len(str_num) - decimal_index
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They asked five problems. We need to solve atleast three problems out of five.

They asked ten questions related to reasoning and quantitative aptitude.We need to solve atleast 7 out of 10.

Q1. They asked questions based on your project which you mentioned in your resume and skills.
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Q2. They asked about your personality related questions
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