ICE Data Services Azure DevOps Engineer Interview Questions and Answers

Q1. Explain Javascript ES6 features.
Ans. 
ES6 introduced new features to Javascript including arrow functions, let and const, classes, and template literals.
• Arrow functions provide a concise syntax for writing functions.

• Let and const are block-scoped variables.

• Classes provide a way to create objects with methods and properties.

• Template literals allow for string interpolation and multi-line strings.

• Destructuring allows for easy extraction of values from arrays ...read more
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Q2. How an angular application works.
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Q3. What are components in angular
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Q1. How to set up the environment for building angular application
Ans. 
To set up the environment for building an Angular application, you need to install Node.js and Angular CLI.
• Install Node.js and npm

• Install Angular CLI using npm

• Create a new Angular project using CLI

• Run the project using ng serve command
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Q2. What is CI/CD pipeline
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CI/CD pipeline is a process of continuous integration and continuous delivery/deployment of software.
• CI/CD pipeline automates the software delivery process.

• It involves continuous integration of code changes, automated testing, and continuous delivery/deployment of software.

• It helps in reducing errors and improving the quality of software.

• Popular CI/CD tools include Jenkins, Travis CI, and CircleCI.
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Q3. How comfortable are you learning and working on VueJS application
Ans. 
VueJS is a progressive JavaScript framework for building user interfaces, known for its simplicity and flexibility in development.
• Reactive Data Binding: VueJS provides a reactive data binding system that automatically updates the UI when the underlying data changes, enhancing user experience.

• Component System: VueJS allows developers to create reusable components, promoting modularity and maintainability in large applic...read more
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They asked general aptitude questions ones you can easily practice from indiabix

Be prepared with medium level DSA questions. They touched upon topics like trees, DP, hashing etc.

Q1. They had a total of two technical rounds where one was with the manager you will be working under. The touched upon some puzzles and reasoning questions. The questions will mostly be around you resume so m...read more
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Q1. General HR questions
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Q1. 1st round more over related to java, spring boot, MySQL and data structures
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Q1. This round is also having the same as first but more deep
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Q1. Nothing much strength and weakness type questions
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Q1. Oops concepts in java
Ans. 
Oops concepts in Java refer to Object-Oriented Programming principles like Inheritance, Polymorphism, Encapsulation, and Abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Allows objects to be treated as instances of their parent class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Abstraction: Hides the implementation detail...read more
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Some basic aptitube and reasoning problems were asked. Easily solvable.

They asked multiple choice questions on oracle sql and pl/sql emphasizing more on reading a code block ask output questions. These were of medium hardness.

Q1. They asked what you do on daily basis in your work. What is most complex thing you have implemented and some complex questions on multilevel plsql collection module. It lasted for 1.5 hrs
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Q1. Questions regarding Oracle architecture and its component
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Q2. Question on live implementation of multilevel collection, bulk collect and record limiting and bulk exception handleing.
Ans. 
Implementing multilevel collections with bulk collect and record limiting for efficient data handling and error management.
• Multilevel collections allow for hierarchical data organization, e.g., a collection of departments, each containing employees.

• Bulk collect improves performance by fetching multiple records in a single operation, reducing context switches.

• Record limiting can be applied to restrict the number of reco...read more
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Q3. Dml error logging functionality
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DML error logging functionality allows for capturing errors during data manipulation language operations.
• DML error logging can be enabled at the table level using the LOG ERRORS clause in DML statements.

• It helps in identifying and resolving data issues without causing the entire transaction to fail.

• Errors are logged in a separate error table, allowing the main operation to continue processing.

• Example: INSERT INTO table...read more
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Q4. Query and join optimization
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Q1. Related to salary and what benefits they provide.
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Q1. Find first repeated character in a string using java streams
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Q2. Make a java class and implement tree map using null key insertion objects
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