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Flashcards in Test 3 Deck (12)
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1
Q

In cases where your EC2 instance cannot access the Internet, what 2 things can you check?

A
  • Does it have an EIP or public IP address?

- Is the route table properly configured?

2
Q

What is the difference in new EC2 behavior when launched into a default subnet vs a custom subnet?

A

Instances launched into a default subnet are assigned public and private IP, and a public and private DNS hostnames.

3
Q

In SWF, what is the purpose of a decision task?

A

It tells the decider the state of the workflow execution

4
Q

What 2 things will occur when an EC2-VPC instance with an associated Elastic IP is stopped and started?

A
  • The underlying host for the instance is possibly changed

- The ENI (Elastic Network Interface) is detached

5
Q

What 2 retrieval options are available for Glacier?

A
  • Expedited Retrieval

- Provisioned Capacity

6
Q

How many requests per second can S3 handle?

A
  • 3,500 requests per second to add data

- 5,500 requests per second to retrieve data

7
Q

In the shell script, what does the revoke-security-group-ingress command do?

A

Removes one or more ingress rules from a security group

8
Q

What is the S3 size limit for single PUT vs Multi-Part Upload?

A
  • Single PUT is 5GB

- Multi-Part is 5TB

9
Q

What is Route53 Active-Active Failover?

A

For when you want all of your resources to be available the majority of the time

10
Q

What is Route53 Active-Passive failover?

A

For when you want a primary resource or group of resources to be available the majority of the time and you want a secondary resource or group of resources to be on standby

11
Q

Which services can be used together to collect logs and then easily perform log analysis?

A

S3 for storing ELB log files and EMR for analyzing the log files

12
Q

What are 2 benefits of using read replicas?

A
  • It provides Elasticity to your AWS RDS instance

- Improves the performance of the primary DB by taking workload from it