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Introduction to Cloud Computing
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Introduction to Cloud Computing

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Questions and Answers

What defines cloud computing?

  • A model for providing on-demand access to configurable computing resources via the internet. (correct)
  • Physical servers connected to a private network.
  • A fixed subscription service for renting hardware and software.
  • A method of distributing software updates across local networks.

    • How does cloud computing relate to utility computing?

  • Utility computing provides access to only software applications.
  • Utility computing requires a long-term contract for resources.
  • Cloud computing is a completely different model than utility computing.
  • Cloud computing builds on the utility computing model by offering on-demand resources. (correct)

    • What is one of the basic characteristics of cloud computing?

  • Minimal internet connectivity for access to services.
  • Resource flexibility that allows scaling up and down based on demand. (correct)
  • Flat-rate billing for all types of services regardless of usage.
  • Users must understand the underlying infrastructure and settings.

    • What characteristic of cloud computing simplifies user interaction?

    <p>Simple graphical interface or Application Programming Interface (API).</p> Signup and view all the answers

    What does the 'pay-as-you-go' pricing in cloud computing entail?

    <p>Customers only pay for the resources and services they actually use.</p> Signup and view all the answers

    Which of the following is NOT a benefit of cloud computing?

    <p>Requiring extensive hardware knowledge from users.</p> Signup and view all the answers

    What does the term 'elasticity' mean in the context of cloud computing?

    <p>The capacity to adjust resources dynamically based on workload.</p> Signup and view all the answers

    Which of the following resources can be included as part of cloud computing services?

    <p>Computing power, databases, and applications provided via the internet.</p> Signup and view all the answers

    Which EC2 instance type is best suited for compute-bound applications?

    <p>Compute-Optimized</p> Signup and view all the answers

    For which of the following tasks are memory-optimized instances particularly useful?

    <p>High-throughput transaction processing</p> Signup and view all the answers

    Which application would benefit most from using compute-optimized instances?

    <p>Gaming Servers</p> Signup and view all the answers

    What is a primary use case for memory-optimized instances?

    <p>In-Memory Databases</p> Signup and view all the answers

    Which of the following tasks would be best served by general-purpose EC2 instances?

    <p>Basic web hosting</p> Signup and view all the answers

    Which type of instance should be used for high-performance applications capable of processing large volumes of data rapidly?

    <p>Compute-Optimized</p> Signup and view all the answers

    What task would likely use a memory-optimized instance over a compute-optimized one?

    <p>High-throughput transaction processing</p> Signup and view all the answers

    Which of the following tasks would NOT typically use compute-optimized instances?

    <p>Running large-scale data analytics frameworks</p> Signup and view all the answers

    What is a significant advantage of using cloud computing in terms of costs?

    <p>Users pay only for the services they utilize.</p> Signup and view all the answers

    Which of the following is a feature that contributes to the continuous availability of applications in cloud computing?

    <p>Distribution across multiple regions.</p> Signup and view all the answers

    What mitigates the problem of obsolescence in cloud computing?

    <p>Continuous upgrades provided by cloud providers.</p> Signup and view all the answers

    Which of the following is a disadvantage of cloud computing associated with data control?

    <p>Regulatory requirements for data control.</p> Signup and view all the answers

    What security issue arises when outsourcing IT infrastructure to cloud providers?

    <p>Potential third-party data breaches.</p> Signup and view all the answers

    What major challenge is associated with switching between different cloud service providers?

    <p>Vendor lock-in due to proprietary technology.</p> Signup and view all the answers

    What was the primary reason for the creation of Amazon Web Services in 2006?

    <p>To address internal IT infrastructure challenges at Amazon.</p> Signup and view all the answers

    How do cloud providers achieve economies of scale?

    <p>By buying hardware and network access in bulk.</p> Signup and view all the answers

    What is the primary function of the Simple Storage Service (S3) offered by AWS?

    <p>To offer scalable storage solutions</p> Signup and view all the answers

    What type of instance does the Elastic Compute Cloud (EC2) provide?

    <p>Cloud-based virtual machine servers</p> Signup and view all the answers

    How many Availability Zones does AWS currently operate?

    <p>105</p> Signup and view all the answers

    Which feature of the AWS Management Console allows users to customize console settings?

    <p>Unified Settings</p> Signup and view all the answers

    What is the cost of Amazon S3 storage per GB?

    <p>$0.15/GB</p> Signup and view all the answers

    Which service allows access to AWS CLI commands directly from the console?

    <p>AWS CloudShell</p> Signup and view all the answers

    Which of the following statements is true regarding AWS's regional operations?

    <p>AWS has plans for additional Regions beyond the current 33.</p> Signup and view all the answers

    Which of the following features is not included in the AWS Management Console?

    <p>Configuration of on-premises devices</p> Signup and view all the answers

    What are EBS volumes best suited for?

    <p>Transactional workloads</p> Signup and view all the answers

    What happens to EBS volumes when an Availability Zone goes down?

    <p>Access to the EBS volume is lost</p> Signup and view all the answers

    What is a limitation of EBS regarding instance attachments?

    <p>The number of EBS volumes depends on the instance type and size</p> Signup and view all the answers

    What is one of the recommended practices for ensuring consistent performance with EBS?

    <p>Using EBS-optimized instances</p> Signup and view all the answers

    What is a characteristic of data in an EC2 instance store?

    <p>It is suitable for temporary and frequently changing data</p> Signup and view all the answers

    Which of the following describes a limitation of EBS volumes?

    <p>They incur costs for frequent snapshots</p> Signup and view all the answers

    Which type of EBS volume is optimized for throughput-intensive tasks?

    <p>HDD-backed volumes</p> Signup and view all the answers

    Why can EBS volumes not be used for shared storage?

    <p>They can only be attached to a single instance</p> Signup and view all the answers

    Study Notes

    Introduction to Cloud Computing

    • Cloud computing is a model for delivering computing resources through the internet.
    • It allows customers to access and use services like networks, servers, storage, applications, and services on demand.
    • Pay-as-you-go pricing is common, meaning you only pay for what you use.
    • Cloud providers manage the infrastructure and resources, allowing users to focus on their applications.
    • Utility computing is a service provisioning model in which users pay for specific usage rather than a flat rate.

    Basic Cloud Characteristics

    • Cloud computing provides a "no-need-to-know" experience for users, hiding the complexity of the underlying infrastructure.
    • It offers flexibility and elasticity, allowing systems to easily scale up and down.
    • Cloud computing utilizes resources like CPU, storage, server capacity, load balancing, and databases.
    • The pay-as-you-go model and the "always on" nature of cloud computing are key characteristics.

    Advantages of Cloud Computing

    • Lower Cost: Cloud computing reduces capital expenditures by eliminating the need to purchase and maintain hardware.
    • Continuous Availability & Survivability: Cloud providers operate multiple data centers in different regions to ensure high availability and reliability.
    • No Obsolescence: Cloud providers constantly upgrade their infrastructure, eliminating the need for customers to handle updates.
    • Best-of-Breed Security: Cloud providers invest heavily in robust security measures.
    • Economies of Scale: Cloud providers benefit from large-scale purchases, which allows them to offer lower prices.

    Disadvantages of Cloud Computing

    • Regulatory Requirements: Some countries have data sovereignty laws that require companies to maintain physical control over data.
    • Security & Privacy: Outsourcing IT infrastructure to third-party cloud providers raises security and privacy concerns.
    • Vendor Lock-In: Migrating between different cloud providers can be challenging due to proprietary technologies and service compatibility issues.

    Introduction to AWS

    • Amazon Web Services (AWS) was launched in 2006 to address Amazon's need for scalable and cost-effective IT infrastructure.
    • The first service offered was Simple Storage Service (S3), providing highly scalable and secure storage at a low cost.
    • Elastic Compute Cloud (EC2) was introduced later, offering cloud-based virtual machine servers.

    AWS Today

    • AWS is a global company with a widespread network of data centers and regions.
    • It operates in 245 countries and territories, across 33 Regions (with 7 more in planning) and 105 Availability Zones (with 21 more planned).
    • AWS offers over 200 cloud-based services, including compute, storage, networking, databases, analytics, and more.

    AWS Management Console

    • The AWS Management Console provides centralized access to all AWS services.
    • It allows users to navigate to service consoles, search for services, customize the interface, run CLI commands, access notifications, and manage applications.

    EC2 Instance Types

    • General Purpose: Balanced compute, memory, and networking resources for a wide range of applications.
    • Compute-Optimized: Designed for compute-intensive workloads like web servers, batch processing, machine learning inference, and gaming servers.
    • Memory-Optimized: Ideal for memory-intensive applications like in-memory databases, big data analytics, and transactional workloads.

    EC2 Instance Store

    • Instance store provides temporary block-level storage on the EC2 instance host.
    • It is suitable for data that changes frequently, like buffers, caches, and scratch data.
    • Data in instance store is lost when the instance is terminated.

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    Description

    This quiz covers the fundamental concepts of cloud computing, including its delivery model, key characteristics, and advantages. You'll learn about pay-as-you-go pricing and how cloud providers manage infrastructure, offering users flexibility and scalability. Test your understanding of how cloud computing transforms the way we access computing resources.

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