Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
EC2
| Question | Answer |
|---|---|
| Outline the instance optimisation types | Compute: high performance processors e.g. ML Memory: large datasets processed in RAM e.g. Business Intelligence Storage: high sequential read/write access in local storage e.g. databases General: balance compute, memory, networking e.g. web servers |
| Outline the eight types of instance rental available | 1. On-demand 2. Reserved - Vanilla - Convertible 3. Convertible reserved 4. Savings plan 5. Spot 6. Dedicated host 7. Dedicated instance 8. Capacity reservation |
| Outline the key elements of an EC2 | Compute/RAM = instance size Storage Networking Firewalls and Security Groups Amazon Machine Image/Operating System Bootstrapping - user data script for initial setup SSH (for remoting into port 22) |
| Describe Security Groups | Controls traffic into and out of EC2 instances - Access to ports - Authorised IP ranges - Inbound/outbound network Defaults: Authorise everything out, deny everything in Many:Many ratio for Instances:Security Groups Locked to a Region/VPC |
| What are the key ports of an EC2? | 22 - secure file transfer protocol (SFTP), secure shell (SSH) 21 - file transfer protocol (FTP) 80 - HTTP access to unsecured websites 443 - HTTPS access to secure websites 3389 - Windows Remote Desktop Protocol |
| Outline the Shared Responsibility Model for EC2 | AWS: Infrastructure, isolation on physical hosts, compliance User: Security groups, OS patching, software/apps, IAM roles, data security |
| Describe an on-demand instance and it's use cases | PAYG model, no advance commitment and no discounts Best used for short-term projects or projects with unpredictable demands/timescales |
| Describe a spot instance and it's use cases | Cheap Unused instances are sold in an auction that the highest bidder wins Temporary, unpredictable and non-private allocation of resources Good for large, parallelised workflows that don't have to be run uninterrupted |
| Describe the vanilla reserved instance and it's use cases | 1/3 yr Rent a given instance flavour for a time period, with fixed type, region, tenancy and OS Suits long, predictable workloads e.g. databases All, partial or no upfront payment options Buy/Sell capacity in Reserved Instance Marketplace |
| Describe a savings plan instance and it's use cases | 1/3yr Commit to spend a certain amount of money on instances Flexible way to save money |
| Describe a dedicated host instance and it's use cases | On-demand or reserved Book entire physical server and return to it each time Suitable for tasks with strict operational compliance Use existing server-bound licenses (BYOL) Control how instances are placed on physical server |
| Describe a dedicated instance and it's use cases | While using a physical server, no other AWS users can share it May not return to the same physical server each time No control over instance placement in server |
| Describe the convertible reserved instance and it's use cases | 1/3 yr Rent an instance in a given family/region for a time period, with option to change type, size, tenancy and OS Suits long but dynamic workloads All, partial or no upfront payment options Buy/Sell capacity in Reserved Instance Marketplace |
| Describe reserved capacity and it's use cases | Any duration On-demand capacity in an AZ guaranteed No time commitments or discounts Charged whether capacity is used or not Suitable for short term uninterrupted workloads in specific AZ |
Created by:
katejimh
Popular Computers sets