Assignment Introduction to Virtualization
1. How does virtualization relate to Cloud Computing?Virtualization is a subset of cloud computing, which is a much broader subject.
2. In a virtualization context, what is an operating system instance?
OS instance is installed on top of the hypervisor.
3. Is it difficult to move instances between different hardware units?
No. It's incredibly simple to move instances between different hardware units.
4. On a Type 1 Hypervisor, how would you manage the O/S instances?
You would manager the OS instances using hypervisor management software on another computer.
5. According to Eli, how much does a Type 1 Hypervisor usually cost?
The hypervisor itself is free, however the management software can cost $3,000 or more.
6. What cautions does Eli have concerning networking and Type 2 Hypervisors?
The instance relies on the host for networking. For this reason, if the host is undergoing a process that requires a significant amount of throughput, the instance's throughput will suffer.
7. How does Eli define web applications?
Eli define web applications as the products and models of complex languages.
8. How does Eli define Cloud Computing?
Eli defines cloud computing as the separation of hardware from the software.
9. How does Eli describe a server cluster? What is a typical application for a server cluster?
A cluster is two or more servers that are combined for increased resources. A typical application for a server cluster is an information system whereby different components are installed on different servers.
10. What are terminal servers? How would describe the architecture used in a terminal server setup?
A terminal server provides processing power to a group of thin clients. It could be described as a star topology with the server in the middle.
11. What is a thin client?
A thin client is a computer with minimal resources that relies on a terminal server for its operating system and resources.
12. What is an application server? How does it differ from a terminal server?
An application server provides access to a singular program or service, whereas a terminal server hosts an entire operating system for a client.
13. What is Virtual Box? How much does it cost?
VirtualBox is Oracle's type II hypervisor. It's free and open source (FOSS), having the GPLv2 license.
14. What advice doe Eli offer concerning licensing?
Be very careful with the licensing fees of your hypervisor, as each runs on a different fee structure and the price can rack up exponentially.
