🛠 Script Explained

Below is a step-by-step explanation of what this Bash script does and how each part works.

Shebang line

bash
#!/usr/bin/bash

1. This line tells the operating system to run the script using the Bash shell located at /usr/bin/bash.
2. When the script is executed, Bash interprets and runs each command in order.
   Variable definitions

   USER='student'
   PREFIX='/home/student/output'
   

3. Each output file will be created in /home/student/ and will start with the name output.
4. Using variables makes the script easier to read and modify. For example, changing the username or output directory requires editing only one line.
   The for loop

   for SERVER in servera serverb; do
   

5. This loop iterates over two hostnames: servera and serverb.
6. During the first iteration, `SERVER` is set to servera.
7. During the second iteration, `SERVER` is set to serverb.
8. The commands inside the loop run once for each server.

Step 3.6

• Reboot may take some time.
• You can watch the progress from the serverb console.

Step 3.8

• Hint: Tab completion is your friend here.

Step 4.2

• In Step 4.1 you used sudo -i so you don't need sudo here.

Question 1: What is the best definition of cloud architecture?

• Combining front end and back end software and components to create highly available and scalable web services that meet the needs of an organization.
• Applying cloud characteristics to solution that uses cloud services and features to meet technical and business requirements.
• Designing applications in cloud-based, shared it infrastructure by using virtual machines and fault-tolerant data stores in the cloud.
• Relocating traditional on-premises data centers to Internet-accessible data centers that a vendor manages.

Question 2: The AWS well-architected framework has six pillars. Three of the pillars are security, Sustainability, and operational excellence. What are the other pillars of the well-architected framework? (Select two.)

• Reliability
• Governance
• Privacy
• Performance efficiency
• Risk management
• Cost optimization

Question 3: Which actions are consistent with the operational excellence pillar of the AWS well-architected framework? (Select two.)

Question 4: An application requires a frontend web tier of multiple servers that communicate with a back-end application tier of multiple servers. Which design most closely follows AWS best practices?

Question 5: A solutions architect is developing a process for handling server failures. Which process would most closely follow maws best practices?

Question 6: A company is considering moving their on-premises data center to the cloud. Their primary motivation is to increase their cost efficiency. Which approach most closely follows AWS best practices?

Question 7: A company stores read only data in S3. Most users are in the same country as the company headquarters. Some users are located around the world. Which design decision most closely follows AWS best practices?

Question 8: A consultant must access a large object in an AWS S3 bucket. They need a day to access the file. Which method for granting access most closely falls AWS best practices?

Question 9: What are the main considerations that influence which AWS Region to use? (Select two.)

Question 10: What are the main considerations that influence which Availability Zones to use? (Select two.)