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CDW Full Stack Developer Interview Questions and Answers
CDW Full Stack Developer Interview Experiences
2 interviews found
Selected
I applied via Campus Placement and was interviewed in May 2023. There were 4 interview rounds.
The aptitude round consists of quantitative, technical questions mainly from java ,oops, ds concepts , some from os . Negative marking was there with 0.25 mark deduction.
It consists of three coding questions and that was pretty much easy . 1st qn is easy and so is the 2nd question . Third question is kind of medium level (but not so tough ) . It was a question related to doubly linked list . 1st and 2nd were array and string questions. We had this in pen and paper format , not in ids .
(1 Question)
- Q1. This is a technical hr one on one interview. It only depends based on your resume and in depth technical questions related to that. Hr would be well versed in those fields. There would be 3-4 Hrs and any o...
(1 Question)
- Q1. It is a in depth technical hr round . There will be panel of 4 technical hr . They will ask questions based on your resume and according to their knowledge in that field. Each will have a storng knowledge ...
Interview Preparation Tips
- Backend
- Data Structures
- Java
- DBMS
- Frontend
Selected
I applied via Campus Placement and was interviewed in Dec 2022. There were 4 interview rounds.
Easy Aptitude questions that covers all sections.
It was a pen and paper based coding test where we have to write 2 codes in 1hr. 1st one is easy and second one is medium level.
(2 Questions)
- Q1. Technical Interview with 3 panel members which lasted for 1hr.
- Q2. DSA, DBMS concepts and a SQL query, 2 Puzzles
(2 Questions)
- Q1. This is basically a Technical+Hr round(final round) where all the 6 panel members will test you with different questions. It lasted for more than 1hr 20 mins.
- Q2. A coding question, DBMS questions, puzzles and mainly on Resume.
Interview Preparation Tips
Full Stack Developer Jobs at CDW
Top trending discussions
Interview questions from similar companies
Selected
I applied via Referral and was interviewed before Aug 2023. There was 1 interview round.
(3 Questions)
- Q1. Project, Oops Concept, Java , which technology u have used ? Framework
- Q2. Framework, Explain Long Polling ,
- Ans.
Long polling is a web technique where the client sends a request to the server and the server holds the connection open until new data is available.
Long polling is a variation of the traditional polling technique where the client sends a request to the server and the server keeps the connection open until new data is available.
It is often used in web applications to simulate real-time updates without the need for const...
- Q3. GraphQL Vs Rest
- Ans.
GraphQL is a query language for APIs that allows clients to request only the data they need, while REST is an architectural style for designing networked applications.
GraphQL allows clients to request specific data in a single request, reducing over-fetching and under-fetching of data.
REST uses multiple endpoints for different resources, leading to multiple requests for related data.
GraphQL provides a strongly typed sc...
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Nov 2021. There were 3 interview rounds.
Interview Questionnaire
6 Questions
- Q1. Design pattern
- Q2. Throw ,throw ex, throw new exception differences
- Q3. Difference between ref and out
- Ans.
Ref and out are both used to pass arguments by reference in C#. Ref is bidirectional while out is unidirectional.
Ref is used to pass a variable by reference and can be read and modified within the method.
Out is used to pass a variable by reference and must be assigned a value within the method.
Ref can be used to pass a variable as an argument to a method and return a value.
Out is used to return multiple values from a m...
- Q4. Action and func
- Q5. Can we use async without await
- Ans.
Yes, async can be used without await.
Async functions return a promise, which can be handled without using await.
Using async without await can be useful for error handling or logging.
However, it is important to handle the promise returned by the async function.
- Q6. Property vs variable
- Ans.
A property is a value associated with an object, while a variable is a named storage location for a value.
Properties are accessed using dot notation or bracket notation
Variables are declared using keywords like var, let, or const
Properties are defined within an object literal or added to an object dynamically
Variables can be reassigned to different values
Example: object.property vs var variableName
Interview Preparation Tips
Skills evaluated in this interview
Shreeya
Interview Questionnaire
7 Questions
- Q1. Tell me about yourself?
- Ans.
I am a software developer with experience in Java and Python.
I have a Bachelor's degree in Computer Science.
I have worked on various projects involving web development and data analysis.
I am proficient in Java and Python programming languages.
I am a quick learner and enjoy working in a team environment.
- Q2. Do you know anything about DBMS? Where is it used?
- Ans.
DBMS stands for Database Management System. It is used to manage and organize data in a structured manner.
DBMS is used in various industries such as healthcare, finance, education, and more.
It helps in creating, modifying, and deleting data in a database.
DBMS provides security features to protect data from unauthorized access.
Examples of DBMS include MySQL, Oracle, Microsoft SQL Server, and PostgreSQL.
- Q3. Practical example of object
- Ans.
An object is a self-contained entity that contains data and behavior.
Objects are instances of classes
They have attributes (data) and methods (behavior)
Objects can interact with each other through method calls
Example: A car object has attributes like color, make, and model, and methods like start and stop
- Q4. Practical implementation of sorting
- Ans.
Sorting is the process of arranging data in a particular order.
Sorting can be done in ascending or descending order.
Common sorting algorithms include bubble sort, insertion sort, and quicksort.
Sorting can be done on various data types, including strings, numbers, and objects.
Sorting can be done using built-in functions in programming languages such as sort() in JavaScript.
Sorting can be optimized for performance by cho...
- Q5. Difference between C and C++
- Ans.
C is a procedural programming language while C++ is an object-oriented programming language.
C++ supports classes and objects while C does not.
C++ has better support for polymorphism and inheritance than C.
C++ has a larger standard library than C.
C++ allows function overloading while C does not.
C++ supports exception handling while C does not.
- Q6. Tell me about yourself
- Ans.
I am a software developer with experience in Java and Python. I am passionate about coding and always eager to learn new technologies.
Experienced in Java and Python
Passionate about coding
Eager to learn new technologies
- Q7. Will your family allow you to move to Hyderabad
- Ans.
Yes, my family is supportive of my career and relocation decisions.
My family understands the importance of career growth and is supportive of my decisions.
We have discussed the possibility of relocation and they are willing to make the necessary adjustments.
They trust my judgment and believe that this move will be beneficial for my career.
We have also considered the quality of life in Hyderabad and believe that it will...
Interview Preparation Tips
Experience: Level was pretty high in case of Quant. You not only need a lot of practice but also practice of some really good questions.
Other than quant all the other sections are easy and direct.
Duration: 60 minutes
Total Questions: 45
Round: Group Discussion
Experience: They give 10 mins to think about the topic and 20 mins for discussion. Main purpose is to check your communication skills so keep on discussing . Even if you can't think of any new point repeat your points
Duration: 20 minutes
Round: Technical Interview
Experience: There were many other questions other than this but what they were emphasizing was whether you have done any practical implementation of IT or the coding skills. Tell them about your projects and how you implemented the coding part.They are much interested in logic than syntax.
Since I'm from ECE these were the main things I talked about.
Round: HR Interview
Experience: It was much of an interactive session.They again asked about projects-nothing technical only some basic idea. Lasted hardly 10 mins.
Round: Other Interview
Experience: In this round they mainly explained the salary structure. This one too was of 10 mins.
General Tips: Even if you don't have excellent coding knowledge do appear for the company. They are not looking for same qualities in each candidate. You should be willing enough to learn.
Skills: Aptitude, Communication Skills, Basic Technical Knowledge-mainly emphasized on the implementation part.
College Name: NIT Bhopal
Motivation: The company dates back to 1983 with locations in almost every US state. It is the 43rd company in Fortune 100 US companies. You have options to switch within the departments. Other than this the compensation is 6lpa.
Skills evaluated in this interview
Software Developer Interview Questions & Answers
Collabera Technologies
Anonymous
posted on 3 Feb 2021
Interview Questionnaire
1 Question
- Q1. Interview questions on .net technology
I applied via Approached by Company and was interviewed before Mar 2021. There were 4 interview rounds.
DSA
About Social changes
(2 Questions)
- Q1. Tell me about yourself.
- Q2. Very basic questions
Interview Preparation Tips
- DSA
I appeared for an interview before Sep 2020.
(2 Questions)
Round duration - 90 minutes
Round difficulty - Medium
We were supposed to give test in any time between 3 PM to 9 PM.
- Q1.
Total Unique Paths Problem Statement
You are located at point ‘A’, the top-left corner of an M x N matrix, and your target is point ‘B’, the bottom-right corner of the same matrix. Your task is to calcula...
- Ans.
The problem involves finding the total number of unique paths from the top-left to bottom-right cell of a matrix by moving only right or down.
Use dynamic programming to solve the problem efficiently.
Create a 2D array to store the number of unique paths at each cell.
Initialize the first row and first column with 1 as there is only one way to reach them.
For each cell (i, j), the number of unique paths is the sum of paths...
- Q2.
Subtree Node Count Problem
We are provided with a tree containing 'N' nodes, numbered from 0 to N-1. The objective is to determine the total number of nodes within each subtree of the provided tree. Speci...
- Ans.
Given a tree with N nodes, find the number of elements in each subtree rooted at every node.
Traverse the tree using Depth First Search (DFS) to calculate subtree sizes for each node.
Use an array to store subtree sizes for each node, starting with leaf nodes having size 1.
The subtree size of a node is the sum of subtree sizes of its children plus 1 for the node itself.
(1 Question)
Round duration - 120 minutes
Round difficulty - Medium
Pair Programming Interview( this round is similar to machine coding round) it started around 11 AM
Focus Areas: Problem solving and implementation of extensions.
The pair coding round is focused on OOPS concepts. You are paired with a TWer for this round. They let you code first for an hour and in the next hour they review your code and suggest changes which would improve the code structure, readability and make it modular and reusable and functional.
- Q1.
River Crossing: Help Ninja Cross Over
Ninja stands at the start of a wooden bridge over a river. Some segments of the bridge are damaged. The undamaged segments, marked as 'safe', are listed in an array
S... - Ans.
Check if Ninja can cross the river by jumping from one safe segment to another based on given constraints.
Iterate through the 'SAFE' array and check if Ninja can make the required jumps to reach the last safe segment.
Ensure that the next jump is either 'X' - 1, 'X', or 'X' + 1 units from the previous jump.
Return 'true' if Ninja can successfully cross the river, otherwise return 'false'.
(1 Question)
Round duration - 120 minutes
Round difficulty - Medium
Students who were shortlisted from Pair Programming round was selected for this round around 3 PM. In this round there were two interviewer.
- Q1.
Middle of a Linked List
You are given the head node of a singly linked list. Your task is to return a pointer pointing to the middle of the linked list.
If there is an odd number of elements, return the ...
- Ans.
Return the middle element of a singly linked list, or the one farther from the head if there are even elements.
Traverse the linked list with two pointers, one moving twice as fast as the other
When the fast pointer reaches the end, the slow pointer will be at the middle
Return the element pointed to by the slow pointer
Interview Preparation Tips
Tip 1 : Have good grasp on OOPS since they have a round named Pair Programming round which is focused upon this.
Tip 2 : Write clean, modular and functional code.
Tip 3 : Practice Data Structures and Algorithms
Tip 4 : You should know breadth and depth of whatever is mentioned in your resume.
Tip 5 : Be loud and clear.
Tip 1 : Make single page resume.
Tip 2 : Mention relevant things on resume.
Tip 3 : Do not put any false things on resume. Projects, internships you are mentioning be ready to answer questions related to it regarding what you solved, idea, databases, design.
Tip 4 : Contribute in open source, participate in hackathons.
Skills evaluated in this interview
Omar Rosales
(2 Questions)
- Q1. Tell me about previous projects you worked before?
- Q2. What did you expect to accomplish in this company?
Presented a case and they wanted to show a solution
Interview Preparation Tips
(2 Questions)
- Q1. Kubernetes internals
- Q2. Spring boot internals
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CDW Full Stack Developer Interview Process
based on 2 interviews
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