Comcast Interview Questions and Answers

Q1. Asked questions on my current project and role
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Q2. Basics of spring JPA like entity manager, spring eureka
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Q3. Asked me to solve one basic question where I have to convert a string to integer
Ans. 
Convert a string representation of an integer to its integer value, handling edge cases and invalid inputs.
• Use the built-in function int() in Python: e.g., int('123') returns 123.

• Handle leading/trailing spaces: e.g., int(' 42 ') returns 42.

• Manage invalid inputs: e.g., int('abc') raises a ValueError.

• Consider negative numbers: e.g., int('-42') returns -42.

• Handle large numbers: e.g., int('12345678901234567890') return...read more
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Q1. Basics of cloud concepts
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Q2. When to use horizontal scaling and vertical scaling
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Horizontal scaling is adding more machines to your pool of resources, while vertical scaling is adding more power (CPU, RAM) to an existing machine.
• Use horizontal scaling when you need to increase capacity by adding more machines to distribute the load.

• Use vertical scaling when you need to handle increased load on a single machine by adding more resources like CPU or RAM.

• Horizontal scaling is more cost-effective and pr...read more
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Q1. Explain the difference between global, function, and block scope in javascript
Ans. 
JavaScript scopes define the accessibility of variables: global, function, and block scopes each have unique rules.
• Global Scope: Variables declared outside any function or block are globally accessible throughout the code.

• Example: `var globalVar = 'I am global';` can be accessed anywhere in the script.

• Function Scope: Variables declared within a function are only accessible inside that function.

• Example: `function myFunc...read more
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Q2. Define a closure and explain how its works
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A closure is a function that retains access to its lexical scope, even when executed outside that scope.
• A closure is created when a function is defined inside another function.

• It allows the inner function to access variables from the outer function's scope.

• Example: function outer() { let x = 10; return function inner() { return x; }; }

• Closures are often used for data encapsulation and maintaining state.

• They can help cr...read more
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Q1. Where the windows logs will be stored
Ans. 
Windows logs are stored in the Event Viewer application on Windows operating systems.
• Windows logs are stored in the Event Viewer application.

• Event Viewer can be accessed by searching for 'Event Viewer' in the Windows search bar.

• Logs are categorized into different sections such as Application, Security, System, etc.
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Q2. How to check the system status in OS level
Ans. 
To check system status in OS level, use commands like top, ps, vmstat, sar, etc.
• Use 'top' command to display real-time system information like CPU and memory usage

• Use 'ps' command to display currently running processes

• Use 'vmstat' command to display virtual memory statistics

• Use 'sar' command to display system activity reports
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It was a HireVue round, most like behavioral round.

Q1. How is your efficiency for GitHub and for command tools?
Ans. 
Efficient in using GitHub and command line tools for version control and automation.
• Proficient in using Git commands for version control and collaboration.

• Familiar with creating branches, merging code, resolving conflicts, and managing repositories on GitHub.

• Experienced in using command line tools for automation tasks like scripting and deployment.

• Comfortable with tools like Git Bash, Git GUI, and command line interfac...read more
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Q2. How good are you with docker and AWS?
Ans. 
I have strong skills in Docker and AWS.
• Proficient in creating Docker containers and managing Docker images

• Experienced in deploying applications on AWS using services like EC2, S3, and RDS

• Familiar with Docker Swarm and AWS ECS for container orchestration

• Knowledgeable in setting up CI/CD pipelines with Docker and AWS services like CodePipeline and CodeBuild
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Q1. Design Patterns
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Q2. Collection Data structure
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Q1. Discussion on my previous projects
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Q2. Behaviour question
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Q1. Salary Discussion
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Q1. Basic java questions
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Q2. Java 8 questions
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Q1. Code was provided, need to correct
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Q2. Basic java questions
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