Connectwise India Interview Questions, Process, and Tips

3 dsa questions online gfg platform

Q1. Sql backend related
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Q2. About my projects
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Q1. CV based questions asked
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Q2. Projects worked upon in the past
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Q1. Why this company
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Q2. Weakness explain
Ans. 
I tend to be overly critical of my own work, which can sometimes lead to perfectionism.
• I often spend too much time on a task trying to make it perfect

• I have difficulty delegating tasks to others because I want to ensure they are done correctly

• I can be self-critical and have high expectations for myself
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Q1. How many promise method you know?
Ans. 
There are several promise methods in JavaScript, including .then(), .catch(), .finally(), and more.
• Common promise methods include .then(), .catch(), and .finally()

• Other promise methods include .all(), .race(), and .resolve()

• Examples: promise.then(), promise.catch(), promise.finally()
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Q2. What are closures?
Ans. 
Closures are functions that have access to variables from their outer scope even after the outer function has finished executing.
• Closures allow functions to access variables from their parent function's scope

• They maintain references to their outer scope even after the outer function has finished executing

• Closures are commonly used in event handlers and callbacks
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Q1. Duplicates in an array
Ans. 
Find and remove duplicates in an array of strings
• Iterate through the array and use a Set to keep track of unique elements

• Check if each element is already in the Set, if so, remove it from the array
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Q2. Golang general questions
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Q1. What is your roles and responsibilities?
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Q1. All the basic questions and they ask to write basic c# program based on array or any logical program
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Q2. Design patterns
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Q3. How Authentication ams Authorisation is done
Ans. 
Authentication is the process of verifying the identity of a user, while authorization is the process of determining what resources a user can access.
• Authentication can be done using various methods such as username/password, tokens, or biometrics.

• Authorization involves assigning roles or permissions to users based on their identity.

• Authentication and authorization are often implemented using frameworks like OAuth or J...read more
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Q4. Program writing
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Q5. Sql queries to find 3rd highest salary
Ans. 
Use SQL query with ORDER BY and LIMIT to find 3rd highest salary
• Use ORDER BY clause to sort salaries in descending order

• Use LIMIT 2,1 to skip first two highest salaries and get the third highest salary
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Q1. Interview went really well but I am not sure why they rejected me at very first round. First interviewer asked me me about my tech stack and current project, she asked me total 4-5 programs I solve them a...read more
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Q2. What is your project architecture?
Ans. 
My project architecture follows a microservices design pattern with a combination of front-end and back-end technologies.
• Utilizes microservices design pattern

• Combination of front-end and back-end technologies

• Uses RESTful APIs for communication between services
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Q3. How do you handle exceptions in your current project, types of exceptions
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Q4. Differencem between singly and doubly linked list
Ans. 
Singly linked list has one pointer in each node pointing to the next node, while doubly linked list has two pointers - one pointing to the next node and one pointing to the previous node.
• Singly linked list is more memory efficient as it only requires one pointer per node.

• Doubly linked list allows for traversal in both directions, while singly linked list only allows traversal in one direction.

• Insertions and deletions a...read more
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Q5. What is static, finally, super keywords
Ans. 
Keywords used in Java programming language
• static keyword is used to create class-level variables and methods

• finally keyword is used in exception handling to define a block of code that will always be executed

• super keyword is used to refer to the superclass of the current object
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Q6. What is polymorphism and types
Ans. 
Polymorphism is the ability of a function or method to behave differently based on the object it is called with.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Types of polymorphism include compile-time (method overloading) and runtime (method overriding) polymorphism.

• Example: Animal superclass with subclasses Dog and Cat. Both Dog and Cat can be treated as Animals.
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Q7. Microservice architecture and how do you call one service from another service
Ans. 
Microservice architecture involves breaking down a large application into smaller, independent services. Services can communicate with each other through APIs.
• Microservice architecture breaks down a large application into smaller, independent services that can be developed, deployed, and scaled independently.

• Services communicate with each other through APIs, typically using HTTP/REST or messaging protocols like RabbitM...read more
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Q8. Docker, Kubernetes, multuthreding
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Q9. Types of exceptions with example
Ans. 
Types of exceptions include checked and unchecked exceptions.
• Checked exceptions are checked at compile time, like IOException.

• Unchecked exceptions are not checked at compile time, like NullPointerException.
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Q10. Java 8 features like functional interface, method reference, optional and all
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3 DSA Questions on Normal Fundamentals

Q1. Computer Subject related Medium level Questions
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Q2. Array for stack
Ans. 
An array of strings can be used to implement a stack data structure.
• Use an array to store the elements of the stack.

• Keep track of the top of the stack using an index variable.

• Push elements onto the stack by adding them to the end of the array.

• Pop elements from the stack by removing the element at the top of the array.
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