Coditas Technologies Data Engineer Interview Questions, Process, and Tips

A combination of aptitude and coding

Q1. Some python related question
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Q2. Some SQL related question
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Q1. Some python problem to solve
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Q2. Some puzzle to answer
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1 python question and 1 sql question for coding and rest were the mcqs based on sql and python.

Q1. Python code was asked for checking the anagrams
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Q2. Sql code asked to solve on screen share using various use cases like group by, having, count
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Q1. Python code was asked for swaping any number but without using python libraries
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Q2. Sql code was asked using concepts of rank dense,rank, partition by
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Q1. Four Pillars of OOPS in Java?
Ans. 
Encapsulation, Inheritance, Polymorphism, Abstraction are the four pillars of OOPS in Java.
• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the implementation details and showing only the necessary features.
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Q2. What is a constructor in Java?
Ans. 
A constructor in Java is a special type of method that is used to initialize objects.
• Constructors have the same name as the class they are in.

• They do not have a return type, not even void.

• Constructors are called when an object of a class is created.

• Example: public class Car { public Car() { // constructor code } }
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Q1. Explain kuberentes architecture
Ans. 
Kubernetes architecture is a container orchestration platform that manages containerized applications across a cluster of nodes.
• Kubernetes follows a master-slave architecture with a master node and multiple worker nodes.

• Master node components include API server, scheduler, controller manager, and etcd.

• Worker node components include kubelet, kube-proxy, and container runtime (e.g. Docker).

• Nodes communicate with each oth...read more
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Q2. What is docker file
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A Dockerfile is a text document that contains all the commands a user could call on the command line to assemble an image.
• Dockerfile is used to build Docker images by specifying the base image, adding dependencies, and defining commands to run.

• Each instruction in a Dockerfile creates a layer in the image, allowing for efficient reuse of layers.

• Examples of Dockerfile instructions include FROM, RUN, COPY, and CMD.

• Dockerf...read more
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Q1. General questions
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Q2. Excel Questions
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Excel Assignment on building a dashboard

Q1. . Net technical
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Q1. Angular technical
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Q1. Find missing char
Ans. 
The question asks to find a missing character in an array of strings.
• Iterate through each string in the array

• Check the length of each string to find the missing character

• Compare the characters in each string to identify the missing one
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