Week 12

Question 0

Define data center

Answer 0

The data center is a collection of hardware and software which is collectively presented clients as a large pool.

Question 1

What are the benefits and limitations of virtualization?

Answer 1

Benefits: 
- better utilization management resources.
- Lower hardware costs.
- Less crashing
- ability to run legacy systems
Limitations: 
- virtual machines require a lot of RAM
- virtualized desktop computers tend to be slower
- upgrades are more challenging

Question 2

What are the different cloud delivery mechanisms?

Answer 2

1. Infrastructure as a service - offers virtualized infrastructure such as servers, devices, storage to a client. The client then installs their own software on the cloud infrastructure.
2. platform as a service - The cloud providers add operating system, Web server, database server, and other low-level software structure to the cloud. This is usually rented it to client.
3. software as a service - The cloud providers offer a specific piece of software to clients over the Internet, rather than clients physically buying and installing themselves. The cloud providers ensure that the software is patched, up-to-date, and available.