EC2 Flashcards
EC2
4 Pricing Options for EC2
On-Demand
Reserved
Spot
Dedicated Host
EC2
What EC2 Instance type is brought up-front in 1 or 3 year blocks
Reserved
EC2
What type of Reserved Instance allows the instance type to be changed
Convertable RI’s
EC2
What type of Reserved Instance is best for repeated, predictable spikes in use
Scheduled RI’s
EC2
What type of Instance is best when multi-tennant virtualisation isnt allowed
Dedicated Host
EC2
Rather than passing credentials around to authenticate between services we should use….
Roles
EC2
Changes to SG’s take effect ….
instantly / not instantly
instantly
EC2
You can attach …. security groups to an EC2 instance
one / many
many
EC2
A security group can be attached to …. EC2 instances
one / many
many
EC2
SG inbound traffic is …. by default
allowed / blocked
blocked
EC2
SG outbound traffic is …. by default
allowed / blocked
allowed
EC2
What provides data about your EC2 instance
EC2 Instance Metadata
EC2
What contains your EC2 Bootstrap scripts
EC2 Instance Userdata
EC2
Which network Interface is best for low cost
Elastic Network Interface
EC2
What are the two available network interfaces for your EC2 instance
Elastic Network Interface
Enhanced Networking
EC2
Which network interface is best for high performance networking
Enhanced Networking
EC2
What are the three placement group options for your EC2 instances
Cluster
Spread
Partition
EC2
Which EC2 placement group is best for low-latancy, high throughput within a single AZ
Cluster, Spread or Partition
Cluster
EC2
Which EC2 placement group is best for a small number of buisness critical EC2 instances
Cluster, Spread or Partition
Spread
EC2
Which EC2 placement group is best when you have multipte EC2 instances with redundancy built it
Cluster, Spread or Partition
Partition
EC2
How many minutes warning are you given before your Spot instance is stopped / terminated
2 minutes
EC2
What service can you use along side on-prem VMWare for cloud migrations or DR
AWS vCentre
EC2
What services can you install on-prem to give access to AWS like infra in your datacentre
Outpost
EC2
When an Auto Scaling group is “scaling in”, using the default termination policy, which EC2 instances are terminated first?
The instance launched from the oldest launch configuration.
The default termination policy is designed to help ensure that your instances span Availability Zones evenly for high availability.
