Arch::03::EC2

Why do you need an AMI to bootstrap a machine?

• Because it is the boot disk
• Because it is the template for the content of the boot disk
• Because it describes the features of the EC2 instance
• Because it boots the performance of the virtual machine

What is the easiest way to run a software applicance on EC2?

• Just install the software on EC2, configure it and buy the license.
• Use a managed service, like Beanstalk, to run it
• Deploy an EC2 instance using a marketplace AMI
• Ask AWS to provide a managed version of the desired software

What is the base mechanism to talk to the metadata API?

• Invoking a HTTPs address
• Read a special file
• Query a relational database
• Cast a 5th level spell

When is the user-data usually invoked?

• During the EC2 instance bootstrapping process
• After each EC2 instance boot
• At regular intervales defined by a cron job
• When the user asks for it

How can an EC2 instance retrieve its public IP?

• By using ip addr in a bash script
• By invoking external tools like ifconfig.co
• By asking the metadata service
• By reading a special env variable

What is the most common type of EBS volume

• General purpose SSD (gp3)

• Provisioned IOPS ssd (io2)

• Throughput Optimized HDD (st1)

• Cold HDD (sc1)

What is the most appropiated EBS type for a high performance database

• General purpose SSD (gp3)

• Provisioned IOPS ssd (io2)

• Throughput Optimized HDD (st1)

• Cold HDD (sc1)

What is the most appropiated EBS type for sequential access patterns?

• General purpose SSD (gp3)

• Provisioned IOPS ssd (io2)

• Throughput Optimized HDD (st1)

• Cold HDD (sc1)

What is the most appropiated EBS type for infrequent access?

• General purpose SSD
• Provisioned IOPS ssd
• Throughput Optimized HDD
• Cold HDD

What is the top performance of an EBS SDD volume?

• 3000 IOPS
• 6000IOPS
• 10000 IPS
• 16000 IOPS