Essays on computer networking

Looking back into history, the big walls acted as a safeguard to a fortress or a kingdom. There were massive and strong doors which stopped any perpetuator from entering without permission. The same thing applies in the computer world, with the only difference being that it's virtual. There are closed networks and open networks.

The closed networks are available for a person who belongs to that entity. On the other hand, open networks are available for the rest of the people A computer network is a telecommunications network that allows computers to transmit data, computer networks and networked devices pass data to each other along data connections.

Networks communicate by sending data packets between each device. Data is transferred in packets.

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Better Essays words 5. From letting you call John in Calgary to letting you make a withdraw at your friendly ATM machine they control the flow of information. But today's complicated and expensive networks did not start out big and complicated but rather as a wire and two terminals back in From these simple networks to the communication giants of today we will look at the evolution of the network and the basis on which it functions Powerful Essays words After a great deal of self-evaluation and an exciting journey through my undergraduate education, I have come to realize that it is not as hard as I had imagined it to be.

I find the success of the Google search engine that touches a million lives each day inspirational. It was after all a research project developed by its founders during their student days at a US university. I feel that such are probable prospects of a graduate education at a university as esteemed as yours where a single line of code that I might write could touch the lives of millions around the world. According to the latest statistical analysis [], it is estimated that Internet connects over 1.

Internet has adopted a large number of new applications, such as on line banking, online gaming, and Internet telephony, and social networks platforms such as facebook, twitter and LinkedIn.

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It is evident that Internet has had an enormous impact on the everyday life of people and on the worldwide economy as well A network is a collection of computers and devices connected, often wirelessly, Vi communications devices and transmission media.

When a computer connects to a network, it is online LAN is what connects computers in a small local area. This will need to be used in college so that the computers in the college are able to communicate with the other computers in the local area.

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  • This will also allow the computers in the local area to connect to the printers which are on the network Better Essays words 4. The building and maintenance of a network is the responsibility of the network manager. The network manager must have the expertise to design and implement an appropriate network for his client. The proper design of a network is based on more than a few principles. However, the job of the network manager encompasses more than simply building a useable network, although that is the end result It represents a logical development of computer technology.

    With the advent of microcomputers in the s many office workers began bringing their own disks into work, compromising data integrity. They also began keeping their own databases, which companies did not like. The answer was to create a computer network. A computer network is a group of computers connected together enabling users to share resources and communicate with each other During the early ages of the computing industry, data centers were nothing more than huge computer rooms.

    During this phase, computers needed certain environment around them to run and be maintained. When the use of computers started to gain more and more popularity, they were deployed all around the world but with little care towards their operating environment Computers systems can be classified into the following categories; microcomputers, minicomputers, mainframes and super computers. Different environments will have certain computer systems which are appropriate for that setting.

    Computer hardware is the physical pieces of a computer. A piece of computer hardware is a mouse. A mouse is a pointer for your screen. The CPU is the central processing part of your computer; the processor performs the instructions given from programs. The system unit is the outside case of your computer. Better Essays words 3. As we know many people in these days using the computer each day for doing their work and assignments or just for spending fun time.

    Computer word does not just mean hardware and software but means more than that. It means everything related to technology such as infrastructure, networks, and programming languages. Computer facilities have three primary computer specialists that are computer science, computer information system, and computer information technology This article provides all the problems and methods for increasing the throughput in multihop networks by changing the MAC layer and enhancing it with IP packet forwarding and routing Wireless networking offers many advantages for organizations and users such as increased productivity, portability and flexibility, and lower installation costs.

    To ensure that this never happens there are computer network administrators. Though it may seem like a boring career, there is a lot of responsibility on these people ensuring that there is never a dull moment. To learn what these responsibilities and the more information of the career one would need to look at the history of the career, Job description, the Education and Training needed, Salary and the Benefits along with it, Location and hours, Some of the positive and some negative attributes, and even what the Projected Outlook for the career Within a short span of time, many countries became industrialized.

    Now we are in the beginning of another industrial revolution. The major cause of the second industrial revolution is the invention of computers. Computer is the most versatile machine humans have ever created. It plays an important role in our everyday life. It covers huge area of application including education, industries, government, medicine, and scientific research, law and even music and arts It is advisable for the users to have different strong password that defines their accounts in order to protect their privacy Kangas, The novel approaches that computer scientists use in this field are looked to for answers to many of the problems that have not been solved through traditional approaches to software engineering thus far.

    One of the concepts studied and implemented for a variety of tasks in artificial intelligence today is neural networks; they have proven successful in offering an approach to some problems in the field, but they also have some failings Therefore, the answers are argumentatively acknowledged by the different authors and explanations of the consequences in causing computer viruses. The paragraphs are mainly focused in four areas, the causes of computer viruses, the economic impacts on government intelligence nuclear, also stealing sensitive information.

    These are all critically affected by computer viruses or malware Computer worms are a dangerous virus because they are self-replicating, meaning that they multiply themselves and spread onto other computer networks seeking a lapse in internet security. Computer worms do not need to attach themselves onto an existing computer program to gain access to the victim computer files. The computer worm was created on accident by a Cornell student named Robert Morris; he was seeking a way of managing the internet in Powerful Essays words 5.

    People use them in a wide range of ways in every aspect of life whether it is interacting with friends, cooking a meal, or transferring funds from one account to another. However, many people do not think about the many aspects of computing and the various devices and software that are part of the information process. Basics of the Computer A computer is a device that can be programmed to perform a specific operation Security is typically handled by a system administrator who implements the security policy, network software and hardware needed to protect a system and the resources accessed through the network from unauthorized access and also ensure that employees have adequate access to resources This level of protection can include controlling physical access to the hardware, as well as protecting against harm that may come from local or remote network access, data and code injection and due to malpractice by system operators, who may have been tricked by outside personnel to place the system in a compromising situation In other words some entity you may or may not have done direct business with has a flaw in their data flow or storage that allows an attacker access and the ability to move forward a secure level without invitation or permission The Abacus dates back to about BC.

    The Abacus was used when merchants who traded goods needed a way to calculate the cost of the goods A Brief History of the Abacus 1. Computers since then have evolved dramatically. Computers are a huge part of everyday life, but they need people who can build these computers Computer careers include working with software creation, hardware installation and maintenance.

    Others choose to investigate and prevent cybercrimes for both independent and governmental business. Networks Network Administrators are in charge of a business 's local area hardware and software network making sure everything runs smoothly from day to day. Usually a four-year degree is required for this work. Database Database Administrators typically design and maintain the master database files for companies keeping them updated and functioning properly Better Essays words 6.

    Old traditional forms of crime such as harassment and fraud offences are being committed electronically via computers or internet nowadays. Lately are appearing new forms of e-crime using new technologies such as Denial of Service DOS attack and phishing by offenders with good technical knowledge in IT. Thus laws in our society needs to be updated to deal to the new forms of crime The options for solving security risks are as varied as the companies themselves.

    However, it is possible to break down the methods for dealing with security risks into three major categories. Companies have the option to: 1. Select best of breed products for their various security needs and assemble the products together to form their own customized solutions It provided opportunity for many people to work at home. Today we use computer networking to do our banking from home, communicate with relatives, shop online, and even to entertain ourselves with music or by playing video games. We can get access to information on almost any subject we can imagine at the click of a mouse.

    Companies can save millions of dollars by sharing resources via computer networks rather than by shipping or traveling The ever-increasing application of computer science fascinated me very much. So, I joined Texas State University for graduate studies with major computer science.

    I have made strong foundation in Electronic and communication engineering during my undergraduate study Furthermore, other incriminating evidence was captured which was used to blackmail and recruit the insider. After, exploiting the log-on credentials, the APT installed RATs on the corporate network to monitor and have a persistence presence within the network There are so many examples of these types of requirements which include quality of service support, multi- cast transport, security, mobile networking, and policy management.

    Development and evaluation of protocols and algorithms for these domains requires answering many design questions. Although small-scale evaluation in a lab, wide-area test beds, and custom simulators can all be valuable, each has significant short- comings Computer Errors 1a. What is an error. These corruptions happen when data, going from one source to another, is changed.

    Computers speak in their very own language called machine code or binary. Since nothing in this world is perfect, errors are an eventuality As a result, learners should understand and prepare adequately for their future careers. There are various technological careers in relation to computer systems that appeal to my future. Most of these careers have emerged due to technological advancements that have introduced new demands for organizations.

    In this case, I am interested in a career in computer systems administration Hacker crimes have use computer programming skill to make errors on your computer that control your computer to get information and change your computer system. Viruses are designed to duplicate or replicate themselves and to avoid detection. Like any other computer program, a virus must be executed for it to function-that is, it must be located in the computer's memory, and the computer must then follow the virus's instructions.

    These instructions are called the payload of the virus Free Essays words 6 pages Preview. Steve Jobs once stated, "What a computer is to me is the most remarkable tool that we have ever come up with. It's the equivalent of a bicycle for our minds Griggs. There are so many opportunities available on the Web, but first there needs to be a connection. Networks such as LANs or WANs need to be available, then the Internet needs to be connected to a network, and finally it is time to search and enjoy the best Web sites in the world Hackers can be divided into three main categories: novice, intermediate, and elite.

    Hacking has been in the information technology IT field for a while. The first hackers appeared in the nineteen sixties and hackers have continued to make progress since then. People hack for a variety of reasons including ego, fun, knowledge, and profit. The first major hacking program, SATAN, caused controversy in , and numerous hacking programs exist today Free Essays words 5.

    As the way, the networking is the important concept of this computer and the internet. Now, it can easily be created even in your home and office simply through the wireless router. Of course, the efficient way to build the home or the office network is to use the high-performance wireless routers. However, these wireless routers are especially beneficial to use for the small industries to get the effective growth and progress The modest beginning of wireless services takes us back to the 19th century at time when Guglielmo Marconi, "the father of radio" made his mark in the world of wireless technology.

    When Marconi started experimenting with radio waves Hertzian Waves in his idea was to produce and detect radio waves over long distances The size range is from calculator to desktop size. Its CPU is microprocessor. It also known as PC, their aim is to satisfy the needs of public and are single-user computers. They are used for common applications such as gaming, social networking, and internet research.

    Although computers benefit us from many aspects, they also have negative implications. Many criminals use the computer to take or alter data, and to gain unlawful access of computers, by using computer worms, viruses, and Trojans. Which has posed new challenges for the government and the society. Due to the versatility of the computer, drawing lines between criminal and non-criminal behavior regarding its use can be difficult Clifford Neuman et al. In traditional systems, password based authentication was used for verification but these passwords can be intercepted by eavesdroppers when sent across computer networks.

    Kerberos is a strong authentication method where authentication is based on cryptography and this method is suitable for insecure environments as it hides passwords efficiently Better Essays words 3 pages Preview. Using multihop has been viewed as one of the main techniques to prolong operational lifetime in wireless sensor networks.

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    The current standard for IP addressing is IPv4. IPv4 addresses are bits in length, and use subnet masks to determine the size of network segments.

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