1. Currently most operating systems dont support / support a variety of networking protocols, hardware, and applications for using them.
2. This means that computers running dissimilar operating systems cant participate/can participate in a common network for sharing resources such as computing, files, printers, and scanners using either wired or wireless connections.
3. Networks can essentially allow a computer's operating system to access the resources of a remote computer to support the same / different functions as it could if those resources were connected directly to the local computer.
4. This include / doesnt include everything from simple communication, to using networked file systems or even sharing another computer's graphics or sound hardware.
5. Some network services allow the resources of a computer to be accessed transparently, such as SSH which allows/ doesnt allow networked users direct access to a computer's command line interface.
6. Client/server networking allows / doest allow a program on a computer, called a client, to connect via a network to another computer, called a server.
7. Servers offer (or host) the same / various services to other network computers and users.
8. These services are never/usually provided through ports or numbered access points beyond the server's network address.
9. Each port number is usually associated with a maximum of one running program, which is responsible for including/handling requests to that port.
10. A daemon, being a user program, can in turn access the local hardware resources of that computer by passing requests to the operating system environment/kernel.
Task 6 Can you present? Lets do it!
I. Creating a PowerPoint presentation to present a topic or subject is a great way to catch your audience's attention. It allows you to compile all of your points onto slides, alongside visual aids. Prepare the presentation in which try to present the operating system timeline and composition. Use information given below.
Early computers were built to perform a series of single tasks, like a calculator. Operating systems did not exist in their modern and more complex forms until the early 1960s. Some operating system features were developed in the 1950s, such as monitor programs that could automatically run different application programs in succession to speed up processing. Hardware features were added that enabled use of runtime libraries, interrupts, and parallel processing. When personal computers by companies such as Apple Inc., Atari, IBM and Amiga became popular in the 1980s, vendors added operating system features that had previously become widely used on mainframe and mini computers. Later, many features such as graphical user interface were developed specifically for personal computer operating systems.
An operating system consists of many parts. One of the most important components is the kernel, which controls low-level processes that the average user usually cannot see: it controls how memory is read and written, the order in which processes are executed, how information is received and sent by devices like the monitor, keyboard and mouse, and decides how to interpret information received from networks. The user interface is a component that interacts with the computer user directly, allowing them to control and use programs. The user interface may be graphical with icons and a desktop, or textual, with a command line. Application programming interfaces provide services and code libraries that let applications developers write modular code reusing well defined programming sequences in user space libraries or in the operating system itself. Which features are considered part of the operating system is defined differently in various operating systems. For example, Microsoft Windows considers its user interface to be part of the operating system, while many versions of Linux do not.
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II. Read information given on http://www.absoluteastronomy.com/topics/Operating_system
