Computer Network Assignment Help

Computer Network Assignment Help

A computer network is a set of computing devices interconnected to share resources and data. There are a plethora of systems, and each can be identified by its characteristics. Eduassignmenthelper.com offers stellar quality computer network assignment help to allow students better their grades. If you are struggling with writing a technical article on computer network, do not look any further than Edu Assignment Helper. Our experts can help you get hold of sufficient information and implement it in your assignment.

Key functions of Computer Networks

As mentioned above, a computer network connects users to resources within defined parameters. The most prominent functions of a computer network include storage, update, sharing, and classifying data. A network is often created by linking computers via cables, modems, and other electronic gadgets.

Our technical computer experts have identified the following as the critical functions of computer networks:

  • Enhancing communication through video conferencing, email and instant messaging
  • Facilitate the use of single hardware devices such as printers and scanners by multiple users
  • Allow users to share files across the network
  • Users can also share operating programs and software on remote systems
  • Networks make information easily and readily available to users

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Types of Computer Network

  • WAN ( Wide Area Network)

A WAN is a computer network that covers a wide area. It can span across a whole country or even states. This is the type of network used in the telecommunication industry. It is preferred to other systems because of its extremely high speed. However, it requires organizations and companies to invest a considerable amount of money in setting it up.

A wide area network depends on different technologies such as integrated phone lines, optical fiber, and radio wave transmissions to transmit data. Over the last few decades, the speed of WAN has radically increased from 110 bits in the 60s to 100GBPS now.

  • LAN (Local Area Network)

A local area network is operated under one administrative system. Generally, it is a network installed in a building to be used by an organization’s departments and academic institutions. LAN has applications and storage systems in a server which is shared among users. This network system can support from two to a few hundred users. In today’s technological age, Wi-Fi and Ethernet are the two most common systems that use the LAN network.

A primary local area network comprises of three to four switches connected to a router or modem that supports internet access. An advanced LAN, on the other hand, consist of several switches. A spanning tree protocol is used to handle more volumes of data and prevent loops.

  • The Internet

This type of network consists of a plethora of government, business, academic, and medical networks, among others, connected through fiber-optic technologies. Our computer network homework professionals define the internet as a global exchange network that uses TCP/IP to transmit data. The internet connects to resources through a public web (World Wide Web) that enables the transmission and exchange of information. Physical locations and geographical boundaries do not limit the internet. Currently, technological experts are envisioning an ideal networking model for the future known as the Internet Area Network based on cloud computing.

  • MAN (Metropolitan Area Network)

The Metropolitan area network supports a whole city.  It covers a larger area than Local Area Network but smaller than the Wide Area Network. An excellent example of a MAN network is the TV cable network.

A metropolitan area network uses various forms of technologies like the Ethernet, FDDI, Token ring, or the ATM. Also, it generally uses infra-red, microwave, or radio transmission to connect two LANs. This type of network can cover up to 40KMs while maintaining its effectiveness and speed. That is why it is suitable for cities and towns.

  • WLAN (Wireless Local Area Network)

The WLAN network is almost similar to LAN. However, the distinctive difference is that it does not need cables. It is effective because since it is wireless, users can move around without losing connection. The functionality of WLAN is classified by the IEEE 802.11 into two modes, which are ad hoc and infrastructure mode. Units transmit peer-to-peer in the ad-hoc mode while they use specific access point in infrastructure mode. The most recent IEEE standard of WLAN is the 802.11g, which offers around 150mbps speed per channel.

  • CAN (Campus Area Network)

Campus Area Network is a connection of several small LAN networks. It allows departments to share files and information shared on the server easily. CAN is also considered as a minor Metropolitan Area Network, although it has a shorter range of effectiveness. A Campus Area Network can serve an area of about 8-10km2. Mostly, it is used in corporate offices that need high-speed data links.

  • SAN (Storage Area Network)

A storage Area Network, just like the name suggests, is an information database. Organizations do not often use it, but it is implemented on websites that offer downloading services. To make a SAN network, three principal components are assembled. Namely, host bus adapters, cabling, and switches. Stored resources are moved from the common network and reorganized into a super speed, independent network. Any server linked to the storage area network can access the database whenever required. The SAN uses SCSI protocol, ATA, and fiber channel protocol for servers and disk drive communication services. The only constraint of this network is that it cannot perform file abstraction. As a result, it can only be used for block-level operations.

  • PAN (Personal Area Network)

A personal area network is used for communication between two computers and devices such as telephones. It only supports devices within a few meters apart on in a room. A primary example of a personal area network is working with your PC or Mac connected to a printer, or connecting a scanner via wireless technology to your smartphone.

  • SAN ( System Area Network)

A system area network refers to a cluster configuration of high-performance computers linked to high-speed connections. This type of network is also called the Cluster Area Network. The main advantage of a SAN network is that it can deliver high bandwidth of up to 1gbps with extremely low latency.  Also, it has low error rates and effective for the transfer of bulk data because it uses the Remote Direct Memory Access Mechanism (RDMA). A system area network is mostly used within a distributed computer system to interconnect all the nodes.

Are there any benefits of  using computer networking?

Computer networking is a new trend in computing. Users all across the globe can connect and share data as if they were in the same room. Our computer networking assignment help experts have identified the following as the key aspects considered by companies who want to set up a computer network:

  • Cost

Before choosing a computer network that suits a firm, the management must check to see if the system is viable. Setting up and installing a computer network requires a chunk of money. Also, the technological equipment like cables, routers, modem, and switches that are necessary for the network can cost big.

  • Policies of usage

An Internet connection can encourage users to connect to undesired resources or materials. On the other hand, pen-testers can use it to detect unwelcome behavior from any source. If you want to know more about the policies of usage and the advantages and disadvantages of the internet, avail of our computer network homework help today.

  • Information and communication

Technology allows users far apart to communicate and share files in real-time in ways that were not possible in the past. Also, through the internet, companies have vast information at their disposal. They can use the information to grow the business and make strategic decisions.

  • Resource sharing

Computer networking allows the optimum use of resources. Through a well-designed computer network, users can share both hardware and software resources. Not only does this facilitate collaboration at the workplace, but it also increases efficiency. Unlike in the past decade, where data was commonly shared through copying to removable media, now sharing information has become much quicker through wireless networks and instant messaging.

Conventional technological devices used in computer networking

Networking types of equipment are fundamental in transferring data through the network. Here are the basic units that are often used to set up a computer network:

  • Hub

A hub is used to connect more than two computers in a star topology system. This device has multiple ports that are used to link the various segments of the network. Data inserted in one port is automatically copied to other ports. A hub is a central connection or the heart of the network. Hubs are usually categorized based on their utilities into switching, passive, and intelligent hubs.

  • Repeater

A repeater is a network device that receives a signal and transmits it at a higher power or level. It is used in transmission systems to regenerate digital and analog signals that are distorted during dispatch. A repeater can use different protocols to convey the same messages.

  • Modem

A modem translates the digital 1s and 0s into sounds that can be transmitted via Plain Old Telephone System (POTS). The name was derived from its functionality, which is modulator-demodulator. Since all computer data is stored digitally, the modem converts them into analog waves, which can be transmitted through cables. Additionally, the modem also converts the received analog waves into digital information.

  • NIC ( Network Infrared Card)

NIC allows computers in a network to communicate with each other. These computers can also transfer files to each other using this device. The Network Infrared Card is effective within 5 meters only and has a data transfer speed of about 4mbps. It only works in direct “line of sight” and cannot penetrate any barrier.

  • Media Converters

Our renowned computer network professionals define media converters as networking devices used to connect two dissimilar media types such as a fiber optic to twisted pair cables. These technological gadgets support different protocols of data communications, which include DS3, Ethernet, E3, T1, J1, and a wide range of multi-cables such as the twisted pair and coax.

  • The Basic switch

A primary switch is almost similar to the hub. It is used at the heart of the network to connect two or more computers, though with some intelligence. A basic switch is also referred to as network switches and uses the concept of packet switching to receive, process, and transfer data. Although basic switches are commonly used in Ethernet switches, they are also useful in other forms of networks such as the fiber channel and asynchronous transfer mode.

Network switches operate on the data-link layer of the OSI model. The basic switch creates and aggregate network from two segments of communications and allows them to transmit data distinctively while staying separate.

  • Basic Router

In the OSI model, a basic router operates at the network layer. It routes information between LANs and forward data packets along networks. Basic routers use forwarding tables and headers to determine the best path to send data through. Also, they communicate with each other through protocols like the ICMP. Routers, especially those used at home and offices, do not filter data. However, they analyze data sent through the internet. Different types of routers can be used in various networks like core router, bridge router, wireless router, software router, and edge router.

  • Basic firewall

A firewall forms part of a computer network or system that is used to block unauthorized access. It permits outward communication and can be created through software, hardware, or a combination of both. Since all data entering and leaving the system must pass through the firewall, it is equipped with specified criteria which every data must meet. A firewall automatically blocks any data that does not meet the conventions set. Hardware firewalls are usually delivered with the main device or purchased as a standalone product. A firewall secures a system through techniques such as packet filtering and gateway procedure application.

  • Basic DCHP (Dynamic Host Configuration Protocol) server

A DCHP server assigns IP addresses and networking parameters to devices within the network. It replaces the manual network administrator or an engineer who has to do the work. A Dynamic Host Configuration Protocol also minimizes configuration errors caused by manual IP addresses like address conflicts. It keeps track of all IP addresses and simplifies network administration.

References

  • Wikipedia
  • about.com
  • com
  • techtarget.com
  • microsoft.com
  • com

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