ITP4113 Quiz Question about AWS

1. This question concerns AWS infrastructure.
a. Draw a diagram to visualize the relationship between Data Centres, Availability Zones (AZ)
and a Region. Uses 3 squares to represent 3 Availability Zones and 1 Circle to represent 1
Region.
b. Name two AWS services that run on Edge Locations.?

2. This question concerns Amazon EC2 Purchase Types and Elasticity.
a. Explain the workload characteristic of On-Demand instances and Spot instances.
b. State the cheapest EC2 Purchase Type, and describe its price characteristic.
c. Name an AWS service that can help you scale in and scale out based on demand.

3. This question concerns Amazon EC2 Instance Lifecycle.
a. If an EC2 instance is stopped or terminated, what is the difference between Instance Store
and EBS volume that is attached after launch?
b. How can you get your instance public IP v4 address in Linux?

4. This question concerns Amazon S3.
a. If one of the Availability Zones is down, can you access the object inside S3? Briefly explain
your answer.?
b. Suppose that you want to automate the data archiving process that moves data from S3
Standard to Glacier. What S3 feature can you use?
c. Will you be charge for the “Data Transfer IN” when you upload file to S3?

5. This question concerns AWS CloudWatch.
a. What is Custom Application-Specific Metric?
b. Another type of Metric is called AWS Resources Metric. Classify the following cases:
i. Number of User visiting website.
ii. CPU Utilization.
iii. Memory utilization.

6. This question concerns Amazon Virtual Private Cloud (VPC).
a. Public subnet means EC2 instance that subnet can access internet directly. Describe the
public route for public subnet?
b. What are the services running with IP addresses 10.0.0.1 and 10.0.0.2?
c. How many IP addresses are available in the VPC subnet 10.0.0.0/24?
d. How can you disable all FTP and Telnet for a subnet?
e. The HTTP inbound port is 80, but the outbound ports are 49152 - 65535. Do you need to set
an allowable range for the outbound ports in Security Group? Briefly explain your answer.
f. You want to capture traffic flow in VPC. What feature do you need to enable in VPC?

7. This question concerns Auto Scaling and Elastic Load Balancing (ELB).
a. What is the main function ELB?
b. What is ELB healthy check?
c. You found that the loading of EC2 is unbalance between 2 Availability Zones. What do you
need to enable in ELB to resolve this problem?
d. If one of the Availability Zones is down, can you ELB still function?
e. If the region is down, can you ELB still function?