week 6 lecture

Question 1

what is an unmanaged service?

Answer 1

Scaling, fault tolerance, and availability are managed by you.

Question 2

what is a managed service

Answer 2

Scaling, fault tolerance, and availability are typically built in to the service.

Question 3

what are unmanaged database challenges?

Answer 3

-Server maintenance and energy footprint
-Software installation and patches
-Database backups and high availability
-Limits on scalability
-Data security
-Operating system (OS) installation and patches

Question 4

what is a data warehouse?

Answer 4

Data Warehouse:
-Stores historical and communicative data from multiple sources
-Designed to analyse data
-Subject Oriented collection of data
-Complex analysis based queries

Question 5

what is EC2 Auto Scaling

Answer 5

-Helps you maintain application availability
-Enables you to automatically add or remove EC2 instances according to conditions that you define
-Detects impaired EC2 instances and unhealthy applications, and replaces the instances without your intervention
-Provides several scaling options – Manual, scheduled, dynamic or on-demand, and predictive

Question 6

what is an auto scaling group?

Answer 6

An Auto Scaling group is a collection of EC2 instances that are treated as a logical grouping for the purposes of automatic scaling and management.