growthmindsit

AWS: Cloud Servers

Review, Research, and Discussion

1. Describe the Web-Request-Response-Cycle

   it is way information flows through the system ; First a user gives a client a URL, the client builds a request for information (or resources) to be generated by a server. When the server receives that request, it uses the information included in the request to build a response that contains the requested information. Once built, that response is sent back to the client in the requested format, to be rendered to the user.

   

2. Explain what a “server” is, as it relates to the WRRC

   Once the client’s request has reached the server, the server will search for and return the information the client is requesting. Often times, this means querying a database, loading the information into an html page, and returning the HTML text to the user in the body of the HTTP response.

3. What does it mean to “deploy” an application?

   It is: “Making an application available to end users”. This means that the end user has opened his/her browser, types “www.app.com” and sees the application in production, hence the www.app.com URL, fully functional!

Document the following Vocabulary Terms

• Server: which responds (or serves) to the requests of the user-agent with information.
• Pub/Sub:Publish–subscribe pattern is a form of asynchronous service-to-service communication used in serverless and microservices architectures. In a pub/sub model, any message published to a topic is immediately received by all of the subscribers to the topic. Pub/sub messaging can be used to enable event-driven architectures, or to decouple applications in order to increase performance, reliability and scalability.
• WRRC: The process used by the Internet Transaction Server (ITS) to drive applications is similar in all Structure linkimplementation models.

Preparation Materials

What is a Virtual Machine (VM)? A virtual machine (VM) is a virtual environment that functions as a virtual computer system with its own CPU, memory, network interface, and storage, created on a physical hardware system (located off- or on-premises). Software called a hypervisor separates the machine’s resources from the hardware and provisions them appropriately so they can be used by the VM.

What Is a Hypervisor? The central component of a VM is a type of software;A hypervisor acts to isolate an individual virtual machine in the cloudspace. A hypervisor isn’t just a divider for your VMs — it’s much more than that. In addition to providing an impermeable virtual border between multiple OSes, your hypervisor will simulate the hardware components of a traditional operating system.

What Is Cloud Computing?

Cloud computing is the delivery of different services through the Internet. These resources include tools and applications like data storage, servers, databases, networking, and software.

Virtualization : enables users to disjoint operating systems from the underlying hardware, i.e, users can run multiple operating systems such as Windows, Linux, on a single physical machine at the same time. Such operating systems are known as guest Oses (operating systems).

Github view