#7 Advanced EC2

Question 1

What benefits does Enhanced Networking Provide? (choose all that apply)

A. Higher Packets per Second (PPS)
B. Consistent Low Latency
C. High Throughput
D. Multicast
E. IPv6
F. High Consistent Latency

Answer 1

A. Higher Packets per Second (PPS)
B. Consistent Low Latency
C. High Throughput

Question 2

What placement group should be used when you need the best performance within EC2?

A. Cluster
B. Spread
C. Partition
D. HPC

Answer 2

A. Cluster

Question 3

What placement group is ideal when you need the best levels of resilience?

A. Cluster
B. Partition
C. Spread
D. Auto-Scaling

Answer 3

C. Spread

Question 4

If you run a large application which uses 100’s of EC2 instances and it needs exposure to physical location for performance and availability reasons. Which placement group should you use?

A. Partition
B. Spread
C. Placement
D. HPC

Answer 4

A. Partition

Question 5

How can permissions be provided to an application running in EC2 using best practices?

A. Access keys via user-data
B. Access keys stored in AMI
C. Credentials associated with the EC2 instance
D. Credentials downloaded from S3
F. Instance Profile & IAM Role

Answer 5

F. Instance Profile & IAM Role

Question 6

How many AZs can be used by a cluster placement group?

A. 7
B. 1
C. However many the VPC is using

Answer 6

B. 1

Question 7

How many instances can be within a spread placement group?

A. 7
B. 3
C. 7 per AZ
D. No limit

Answer 7

C. 7 per AZ

Question 8

What is true of dedicated hosts? (pick 2)

A. You are charged by how many instances are running on the host
B. EC2 instances incur a charge while running
C. There is no charge for EC2 instances running on a dedicated host
D. The host is dedicated to you
F. The host is dedicated to a small group of customers

Answer 8

C. There is no charge for EC2 instances running on a dedicated host
D. The host is dedicated to you

Question 9

Which feature of EC2 allows you to provide commands that the instance will run at startup?

A. Metadata
B. AMI
C. User-Data
D. LaunchTables

Answer 9

C. UserData

Question 10

When do commands specified in user-data get executed?

A. Periodically
B. Every time the instance moves from STOPPED to RUNNING
C. Once when the instance is provisioned
D. Once when the instance is provisioned and then every user-data change

Answer 10

C. Once when the instance is provisioned