Questions
1. How does Eli define Cloud Computing?
Eli defines Cloud Computing as the separation of applications from hardware.
2. According to Eli, what does virtual computing do? Why is this advantageous?
The operating system is running its own hardware. If something fails, another one can take over automatically.
3. How does Eli relate virtual computing to cloud computing?
Virtual computing is a component of cloud computing.
4. In a cloud context, what is clustering?
Cloud Clustering is when two or more servers are operating together.
5. What major application does Eli cite as being particularly friendly to
clustering?
MySQL Cluster Database.
6. What happens when an individual server in a cluster fails?
When an individual server in a cluster fails, it will reroute to a working server.
7. In a cluster context, what is replication?
Replication in a cluster means that each server in the cluster is identical.
8. What does a terminal server do?
Devices that connect back to the mainframe
9. What do we call the devices that terminal servers provide services to?
Thin Clients
10. What are application servers? How do they differ from terminal servers?
Applications servers work with an application, However a terminal server stores several services.
11.Eli cites two ways to do virtualization. What are they? When would you employ either one?
One way is to separate the operating system from the hardware. The second way is by using a hypervisor.
12.What is the name of the free open source virtualization software?
Virtual Box.
13. Can you, without any other software, directly manage a hypervisor?
No it cannot be managed with software.
14. Amazon's EC2 environment was an early example of cloud computing. Describe the service and explain why an organization may find it compatible.
Amazon Elastic Compute Cloud is a web service that provides capacity in the cloud for cloud developers. It is used to make cloud computing easier for developers.
15. What is a hosted instance?
A hosted instance is a Virtual server within a cloud network.
16. What is an edge server? Why are they significant?
An edge server store network information in distributed networks, moreover they are servers that are in specific geographical locations. This reduces latency because it is closer to those who need it.
17. What is dynamic bit rate switching? How can it impact your cloud computing billing?
Dynamic bit rate switching automatically adjusts streaming video quality based the users network speeds. For example, users with fast connections adjusts to High-Definition content. However, users with slow connections are served with lower definitions. This can cause fluctuations in cost.
18. What is the difference between a hosted instance and a hosted solution?
Hosted instance is where the user leases at a specific rate flexibility. However, hosted solution is a restricted with a set monthly charge.
19. Compare and contrast public and a private clouds.
A public cloud is open sourced and is free for anyone to use, however private clouds are only for authorized users.
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