Cloud Computing and Programming Concepts
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Questions and Answers

What is the primary role of Infrastructure as Code (IaC) in DevOps?

  • It facilitates interactive configuration tools for hardware.
  • It is a manual approach for provisioning resources.
  • It emphasizes physical hardware enhancements.
  • It allows for managing infrastructure using machine-readable definitions. (correct)

Which of the following statements about IaaS (Infrastructure as a Service) is correct?

  • IaaS only provides physical hardware resources.
  • IaaS includes storage access as a service over the internet. (correct)
  • IaaS does not support remote management of resources.
  • IaaS is exclusively for software deployment.

In the context of performance testing, how quickly should the analytics report be displayed when clicking VIEW PERFORMANCE?

  • In 5 seconds
  • In 2 minutes
  • Immediately
  • In 2 seconds (correct)

Which of the following statements about the name attribute in an HTML anchor tag is true?

<p>The name attribute creates named anchors. (D)</p> Signup and view all the answers

What type of cloud storage does an EC2 instance represent?

<p>It does not qualify as cloud storage. (A)</p> Signup and view all the answers

Which operator is utilized in Python to select elements within a given range?

<p>Colon (:) operator (A)</p> Signup and view all the answers

What distinguishes Amazon RDS from Amazon DynamoDB?

<p>RDS offers options for various database engines. (B)</p> Signup and view all the answers

What is the primary goal of Continuous Integration (CI) in DevOps?

<p>To detect and fix integration errors quickly. (A)</p> Signup and view all the answers

Which statement is true regarding the primary key in databases?

<p>Primary key must uniquely identify each record. (D)</p> Signup and view all the answers

How does the SQL COUNT function interact with other aggregate functions?

<p>It can count rows that match specified conditions. (C)</p> Signup and view all the answers

What type of data model does Amazon DynamoDB primarily use?

<p>Key-value and document data model (B)</p> Signup and view all the answers

Which of the following statements best describes the scalability of AWS services?

<p>AWS services are designed for scalable cloud computing. (A)</p> Signup and view all the answers

Which statement about generative AI is incorrect?

<p>Generative AI focuses solely on historical data. (A)</p> Signup and view all the answers

Which statement accurately describes the difference between EC2 and EBS?

<p>EC2 offers resizable virtual machines billed on usage, while EBS provides block storage billed on capacity. (A)</p> Signup and view all the answers

What is the output of the SQL query SELECT SUBSTRING_INDEX(email, '@', 1) AS name from your_table WHERE email LIKE '%@gmail.com'?

<p>It returns the username part before the '@' symbol. (C)</p> Signup and view all the answers

Which of the following statements regarding DevOps is correct?

<p>DevOps enhances collaboration between development and operations teams. (C)</p> Signup and view all the answers

Which statement about AWS Lambda is true?

<p>AWS Lambda is a serverless compute service that allows code execution without server management. (C)</p> Signup and view all the answers

What is the significance of the McCabe number?

<p>It assesses the complexity of a program through independent paths in its source code. (C)</p> Signup and view all the answers

In SQL, which operator is used to specify a range of values?

<p>BETWEEN (B)</p> Signup and view all the answers

Which of the following best describes the term 'IAM' in AWS?

<p>It is a service for controlling access to AWS services and resources. (D)</p> Signup and view all the answers

What is the result of the function ABS(3.765,2)?

<p>It requires two parameters and produces an error. (A)</p> Signup and view all the answers

Flashcards

What is EC2?

AWS Elastic Compute Cloud (EC2) provides resizable virtual machines, called instances, for computing in the cloud. You pay based on how long these instances are running.

What is EBS?

AWS Elastic Block Store (EBS) provides persistent storage volumes that work like hard drives for your EC2 instances. You pay for the amount of storage you use.

What is AWS Lambda?

AWS Lambda lets you execute code without managing servers. It's a serverless service that runs your code only when it's needed.

What is the McCabe Number?

The McCabe Number, also known as Cyclomatic Complexity, is a metric that measures how complex the code of a program is. It counts the number of different paths the code execution can take.

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How do you select data within a range in SQL?

In SQL, you can use the BETWEEN operator to retrieve data within a specific range of values.

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How is Data represented in SQL?

In SQL, data is stored in a structured format, where rows represent individual records, and tables contain related rows.

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What is IAM in AWS?

IAM stands for Identity and Access Management. It is a service in AWS that helps manage access to AWS services and resources.

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What is the primary goal of DevOps?

DevOps helps to improve communication and collaboration between development and operations teams, leading to better software delivery and maintenance.

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What is Infrastructure as Code (IaC) in DevOps?

Infrastructure as Code (IaC) is a practice that utilizes machine-readable definition files to manage and provision computing infrastructure like servers, networks, and storage, rather than relying on physical hardware configuration or interactive tools.

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Does IaaS offer storage as a service?

IaaS (Infrastructure as a Service) providers commonly offer storage as a service, allowing users to access and manage storage resources remotely over the internet.

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Is the HTML name attribute an obstacle for anchor tags?

The name attribute in HTML is often used with anchor tags to create named anchors within a document. These named anchors can be linked to, allowing users to navigate to specific sections of the page.

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What type of testing should be done to ensure an analytics report is displayed within 2 seconds?

Performance testing focuses on measuring the system's speed, responsiveness, and stability under different workloads and user scenarios.

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What is the purpose of a foreign key in a database?

A foreign key in a relational database ensures referential integrity. It creates a link between two tables, ensuring that data in one table aligns with data in the other table.

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Python's Range Selection Operator

In Python, the colon (:) operator is used to select a range of elements within lists, tuples, strings, and other sequences. For example, my_list[1:3] would extract elements from the 1st index (inclusive) up to the 3rd index (exclusive).

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What is Amazon RDS?

Amazon Relational Database Service (RDS) is a managed relational database service offered by AWS. It provides a fully scalable and secure platform for popular relational databases like MySQL, PostgreSQL, and SQL Server. This means you can manage, scale, and backup your relational databases without needing to handle the underlying infrastructure.

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What is Amazon DynamoDB?

Amazon DynamoDB is a fully managed NoSQL database service provided by AWS. It offers low-latency, scalable, and flexible storage for key-value and document data models.

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What is Continuous Integration?

Continuous Integration (CI) is a software development practice in DevOps. It involves developers merging their code changes frequently into a central repository, followed by automated build and test processes. This allows for early error detection and promotes faster software delivery cycles.

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What is Amazon S3?

Amazon Simple Storage Service (S3) is a secure, massively scalable object storage service provided by AWS. It is designed for storing and retrieving virtually any type of data from anywhere on the web. You can use S3 for various purposes, such as website hosting, storing backups, and managing data archives.

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Generative AI Usage

Generative AI is primarily used for generating new content based on existing data, including text, images, audio, and even code. While it can analyze historical data to learn patterns, its core focus is on creating something novel, not simply predicting historical trends.

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Scalability in AWS

AWS (Amazon Web Services) offers a wide range of scalable cloud computing services. This means you can adjust your cloud resources (like servers, storage, and networking capacity) up or down as needed to handle varying workloads and demands. You pay only for the resources you use, making it cost-effective.

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What is SQL COUNT Function?

The SQL COUNT function is used to determine the number of rows in a table or result set that meet a specified condition.

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Study Notes

Python

  • Python is open source.

AWS

  • EC2 (Elastic Compute Cloud): Provides resizable virtual machines, billed by usage.
  • EBS (Elastic Block Store): Offers persistent block-level storage, billed by provisioned capacity.
  • AWS Lambda: A serverless, event-driven compute service, allowing code execution without server management.

JavaScript

  • JavaScript allows code execution on events (e.g., button clicks).

DevOps

  • DevOps aims to improve communication between development and operations teams.
  • DevOps helps maximize efficiency in delivering and maintaining software applications.

SQL

  • A query to extract names from email addresses ending in @gmail.com:
SELECT SUBSTRING_INDEX(email, '@', 1) AS name
FROM your_table
WHERE email LIKE '%@gmail.com';

jQuery

  • Check jQuery version using:
$.ui.version || console.log(jQuery().jquery);

Cloud Computing - AWS

  • AWS Lambda: Serverless computing provided by Amazon Web Services, allowing code execution without server provisioning.
  • EC2 (Elastic Compute Cloud): Resizable compute capacity in the cloud, used for tasks like application running, website hosting and processing data.
  • IAM (Identity and Access Management): AWS service for securing access to AWS resources and services.
  • SQL Data Representation: Data is stored in rows and tables.
  • SQL Operator for Range: The BETWEEN operator is used to specify a range in SQL queries.
  • McCabe Number: A measure of software program complexity, calculated by the number of linearly independent paths.
  • Cloud Formation: Cloud computing services that provide methods to build, deploy and manage cloud resources and applications.
  • Continuous Integration in DevOps: Developers periodically merge their code into a repository to run automated tests, detecting issues promptly.

Data Structures

  • List, Tuple, Dictionary, Set: Python data structures.
  • Tuples are immutable, lists are mutable.

Database Transactions

  • Database transactions can be rolled back to revert changes.

Cloud Storage

  • Amazon S3 (Simple Storage Service) is object storage.
  • EC2 is not a cloud storage service.

Data Analysis in Cloud

  • AWS uses services like Redshift, DynamoDB, and Athena for large data analytics.

HTML

  • The name attribute in HTML is not an obstacle for <a> tags.
  • The name attribute can be used to create named links for users to navigate to specific sections on a page.

Unique Keys

  • Unique keys in a database do not accept NULL values.

Data Analytics

  • AWS offers data analytics tools for large datasets.

Agile Methodology

  • Agile methodology uses early and faster access to the customers' needs for software development.

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Description

Test your knowledge on various programming concepts, cloud computing, and DevOps practices. This quiz covers topics including Python, AWS services, JavaScript, SQL queries, and jQuery. Evaluate your understanding of modern software development and deployment techniques.

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