AWS Solutions Architect Exam - SAA-C03
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Questions and Answers

What is the primary focus of the course mentioned?

  • Basic IT skills development
  • Advanced database management
  • Solutions Architect exam preparation (correct)
  • Cloud service pricing strategies

    • Which of the following AWS services content will be covered in the course?

  • AWS services only for developers
  • Only database services
  • Over 30 AWS services (correct)
  • Only services relevant to EC2

    • Who is the instructor for the course?

  • Stephane Maarek, a veteran instructor on AWS (correct)
  • An anonymous cloud expert
  • A beginner-level IT consultant
  • A current AWS Solutions Architect with no teaching experience

    • What basic requirement is suggested for participants of the course?

    <p>Basic IT knowledge</p> Signup and view all the answers

    What unique content does the course include?

    <p>Videos from various AWS-related courses</p> Signup and view all the answers

    What type of MFA device is provided by Gemalto for AWS?

    <p>Hardware Key Fob MFA Device</p> Signup and view all the answers

    Which of the following is a way to access AWS directly through command-line tools?

    <p>AWS Command Line Interface (CLI)</p> Signup and view all the answers

    What are access keys in AWS similar to?

    <p>Username and password</p> Signup and view all the answers

    Which of these statements about access keys is correct?

    <p>They are generated through the AWS Management Console.</p> Signup and view all the answers

    What is the function of the AWS CLI?

    <p>Enable interaction with AWS services using commands</p> Signup and view all the answers

    What does the Secret Access Key in AWS function as?

    <p>Account verification password</p> Signup and view all the answers

    Which of these is NOT an option for accessing AWS?

    <p>AWS File Transfer Protocol (FTP)</p> Signup and view all the answers

    Who manages their own access keys in AWS?

    <p>All AWS users</p> Signup and view all the answers

    What type of storage must the root volume be for an instance?

    <p>EBS, encrypted, and large</p> Signup and view all the answers

    Which of the following statements about EBS volumes is true?

    <p>EBS volumes can persist data after instance termination.</p> Signup and view all the answers

    What is the maximum duration an instance can be hibernated?

    <p>60 days</p> Signup and view all the answers

    Which statement correctly describes an EBS (Elastic Block Store) volume?

    <p>It functions like a network drive and is bound to an availability zone.</p> Signup and view all the answers

    What type of EBS storage is offered as part of the free tier?

    <p>General Purpose (SSD) or Magnetic up to 30 GB</p> Signup and view all the answers

    What is the primary cost structure of On-Demand Instances?

    <p>Pay by second for Linux and Windows, hourly for others</p> Signup and view all the answers

    Which type of EC2 instance is best suited for unpredictable, short workloads?

    <p>Spot Instances</p> Signup and view all the answers

    What is a key feature of Convertible Reserved Instances?

    <p>They allow changes to instance type, family, and OS</p> Signup and view all the answers

    For how long can a Reserved Instance be purchased?

    <p>1 year or 3 years</p> Signup and view all the answers

    Which of the following is NOT a benefit of Reserved Instances?

    <p>Higher cost compared to On-Demand</p> Signup and view all the answers

    What distinguishes Dedicated Hosts from Dedicated Instances?

    <p>Dedicated Hosts allow for instance placement control</p> Signup and view all the answers

    What is a key characteristic of Savings Plans?

    <p>They provide savings in exchange for a commitment to an amount of usage</p> Signup and view all the answers

    What type of billing system is used for Linux and Windows On-Demand Instances?

    <p>Billing per second after the first minute</p> Signup and view all the answers

    What is the default status of inbound traffic in security groups?

    <p>All inbound traffic is blocked</p> Signup and view all the answers

    Which port is used for Secure Shell (SSH) access in security groups?

    <p>22</p> Signup and view all the answers

    In a security group, what can rules reference?

    <p>By both IP addresses and other security groups</p> Signup and view all the answers

    What is the primary function of a security group in relation to EC2 instances?

    <p>To act as a firewall regulating inbound and outbound traffic</p> Signup and view all the answers

    If your application times out, what could be the cause?

    <p>A security group misconfiguration</p> Signup and view all the answers

    Which of the following is NOT typically controlled by a security group?

    <p>Performance of the EC2 instance</p> Signup and view all the answers

    For SSH access, which security group rule would you implement?

    <p>Allow inbound traffic on port 22</p> Signup and view all the answers

    What is a common misconception regarding outbound traffic in security groups?

    <p>Outbound traffic is authorized by default</p> Signup and view all the answers

    How many instances can a single security group be attached to?

    <p>Multiple instances</p> Signup and view all the answers

    Which port is associated with HTTP traffic?

    <p>80</p> Signup and view all the answers

    What does it mean if an application gives a 'connection refused' error?

    <p>The application is not running or has not been launched</p> Signup and view all the answers

    Which of the following protocols has a corresponding port of 443?

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

    What does a security group primarily restrict?

    <p>Traffic to and from an EC2 instance</p> Signup and view all the answers

    Study Notes

    AWS Solutions Architect Exam - SAA-C03

    • The course is designed for the AWS Solutions Architect - Associate exam (SAA-C03).
    • Basic IT knowledge is required.
    • The course will cover over 30 AWS services.
    • The course includes videos from the Cloud Practitioner, Developer and SysOps courses, as well as videos specific to the Solutions Architect exam.

    Instructor

    • The instructor is Stephane Maarek, an AWS Solutions Architect and veteran instructor.
    • He worked as an IT consultant and has built websites, apps, and streaming platforms using AWS.
    • You can find him on GitHub, LinkedIn, Medium, and Twitter.

    Multi-Factor Authentication (MFA) in AWS

    • MFA devices can be hardware key fobs.
    • Gemalto and SurePassID are third-party providers for hardware key fobs.
    • Hardware key fobs are available for AWS GovCloud (US).

    Accessing AWS

    • You can access AWS through the AWS Management Console, AWS Command Line Interface (CLI), or AWS Software Development Kit (SDK).
    • The Management Console is protected by passwords and MFA.
    • The CLI and SDK are protected by access keys.
    • Access keys are generated through the AWS Console.
    • Users manage their own access keys.
    • Access keys are secret and should not be shared.
    • Access Key ID is similar to a username.
    • Secret Access Key is similar to a password.

    AWS Command Line Interface (CLI)

    • The CLI is a tool that allows you to interact with AWS services using commands in your command-line shell.
    • It provides direct access to the public APIs of AWS services.
    • You can develop scripts to manage your resources.
    • It is open-source and available on GitHub.
    • The CLI is an alternative to the AWS Management Console.

    AWS Software Development Kit (SDK)

    • The SDK allows you to manage and interact with AWS services programmatically.
    • You can use the SDK to develop applications that interact with AWS services.
    • It is an alternative to manually making API calls.

    Security Groups

    • Security groups act as a firewall on EC2 instances.
    • They regulate access to ports, authorized IP ranges, and control inbound and outbound network traffic.
    • Security groups have rules that define what traffic is allowed in and out of the EC2 instance.
    • Security groups can be attached to multiple instances.
    • Security groups are locked down to a specific region and VPC combination.
    • They live outside the EC2 instances.
    • All inbound traffic is blocked by default.
    • All outbound traffic is authorized by default.

    EC2 Instance Purchasing Options

    • On-Demand Instances: - Short workload, predictable pricing, pay by second
    • Reserved Instances (1 & 3 years): - Long workloads, discount, upfront payment commitment
      • Conver tible Reserved Instances: - Flexible instance type, family, OS, scope, and tenancy
    • Savings Plans (1 & 3 years): - Commitment to an amount of usage, long workload, discount
    • Spot Instances: - Short workloads, cheap, can lose instances (less reliable)
    • Dedicated Hosts: - Book an entire physical server, control instance placement
    • Dedicated Instances: - No other customers share your hardware
    • Capacity Reservations: - Reserve capacity in a specific Availability Zone for any duration

    EC2 Instance Purchasing Option Details

    • On-Demand Instances: Pay for what you use, highest cost, no upfront payment, no long-term commitment. Recommended for short-term and uninterrupted workloads.
    • Reserved Instances: Up to 72% discount compared to On-Demand, long-term commitment. Recommended for steady-state usage applications. Can be bought and sold in the Reserved Instance Marketplace.

    EC2 Instance Storage

    • Instance Store: - Temporary storage that is lost when the instance terminates.
    • Elastic Block Store (EBS): - Persistent storage that is not lost when the instance terminates. Can be mounted to only one instance at a time and are bound to a specific Availability Zone.

    EBS Volume

    • An EBS volume is a network drive that can be attached to your instances while they run.
    • It allows instances to persist data even after termination.
    • Only one instance can be mounted at the same time.
    • Bound to a specific Availability Zone.
    • Free tier: 30 GB of free EBS storage per month.
    • Analogous to a "network USB stick".

    Classic Ports

    • 22: SSH (Secure Shell) - log into a Linux instance
    • 21: FTP (File Transfer Protocol) – upload files into a file share
    • 22: SFTP (Secure File Transfer Protocol) – upload files using SSH
    • 80: HTTP – access unsecured websites
    • 443: HTTPS – access secured websites
    • 3389: RDP (Remote Desktop Protocol) – log into a Windows instance

    SSH Summary Table

    • Mac/Linux: Use SSH
    • Windows < 10: Use Putty
    • Windows >= 10: Use SSH or Putty
    • EC2 Instance Connect: Use EC2 Instance Connect tool

    SSH Troubleshooting

    • If SSH doesn't work, try these steps:
      • Make sure your security group allows inbound traffic on port 22.
      • Verify your EC2 instance's status and ensure it is running.
      • Confirm that you are using the correct SSH credentials.
      • Ensure that the SSH client you are using is properly configured.

    Important to Remember

    • An instance can NOT be hibernated more than 60 days.
    • The root volume for an instance must be EBS, encrypted, not instance store, and large.
    • Instance storage is temporary and is lost when the instance shuts down.
    • An EBS volume can be attached to only one instance at a time.

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    Related Documents

    AWS Certified Solutions Architect Slides v38.pdf

    Description

    This quiz is designed to help you prepare for the AWS Solutions Architect - Associate exam (SAA-C03). It covers over 30 AWS services, including access methods like Management Console, CLI, and SDK. With insights from an experienced instructor, you will enhance your understanding of AWS and Multi-Factor Authentication (MFA).

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