The hardware needed to connect stand alone computers into a local area network ocr
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A small business has three stand-alone computers, a printer and an internet connection in an office. Describe, using a diagram, how the computers can be connected to each other using a bus topology, stating what
hardware will be needed. Bus line shown. Terminators shown at each end of the bus. Three computers attached to bus. Printer attached to bus. Internet connection connected to a router. Network adapters required on each computer. Router needed to share the internet connection. Cables needed to connect the different devices. Is the internet is the same as the World Wide Web? FALSE - The Internet is named for "interconnection of computer networks". It is a massive hardware combination of millions of personal, business, and governmental computers, all connected like roads and highways. The World Wide Web, or "Web" for short, is a massive collection of digital pages: that large software subset of the Internet dedicated to broadcasting content in the form of HTML pages. The Web is viewed by using free software called web browsers. FALSE A local area network (LAN) is a computer network that interconnects computers within a limited area such as a home, school, computer laboratory, or office The Internet is named for "interconnection of computer networks". It is a massive hardware combination of millions of personal, business, and governmental computers, all connected like roads and highways across the globe. The Internet is a network between many networks. TRUE The Internet is named for "interconnection of computer networks". It is a massive hardware combination of millions of personal, business, and governmental computers, all connected like roads and highways. No single person owns the Internet. No single government has authority over its operations. Some technical rules and hardware/software standards enforce how people plug into the Internet, but for the most part, the Internet is a free and open broadcast medium of hardware networking. A user types the address www.ocr.org.uk into a web browser. Describe how a DNS server is used to access this website and explain the advantages of using DNS servers. Describe - DNS severs have a database of IP addresses. Constantly updated by other DNS servers. When you request an address (URL), the DNS server looks up the URL and returns the IP address, or searches for the address from other DNS servers. Advantages - People do not need to remember IP addresses. DNS server maps the for ya! Easily upgradeable (eg IPv4 to IPv6) without all web addresses needing to be the same. As long as you are connected to a DNS server you can have access to all the addresses. A rock band uses an internet website to advertise its music. The website uses HTML. Describe HTML. HyperText Mark-up Language. Text file containing the text to be displayed. Uses tags which indicate how to display the text and location of pictures/other elements to include and hyperlinks to other locations/URLs. A rock band uses an internet website to advertise its music. Explain the importance of HTML in the creation of web pages. Web browser used to interpret the file and display the data correctly. HTML is an open/accepted standard so data will be display correctly on all browsers which conform to the standard. A rock band uses an internet website to advertise its music.A list of file extensions for common file standards used on the internet is shown below. JPG PDF MP3 MPEG ZIP Explain the importance of compressing files when transmitting them via the internet. It reduces the size of the file which needs to be transmitted. Shortens download time and reduces internet traffic. Describe the difference between lossy and lossless compression and give an example where each would be used. In lossy compression, when the data is uncompressed it is not exactly the same as the original but the difference is so small that it cannot normally be noticed e.g. music files (mp3) and images (jpg).
Many more examples.....can you name three others? A large company with
200 employees uses a local area network (LAN) which includes all the computers in its head office.Describe the security measures and network policies which can be used to safeguard the security and privacy of the company’s data on the network. Points may include: A classroom in a primary school has 6 standalone computers. The school decides to connect them to form a LAN. What is a LAN? Local Area Network / A network (interconnection) which covers a small area like a building A classroom in a primary school has 6 standalone computers. The school decides to connect them to form a LAN. State advantages of connecting the computers into a LAN. Can share files. Can share resources (e.g. printer/scanner/internet connection). Computers can be managed/controlled centrally. Users/computers can communicate with each other. A classroom in a primary school has 6 standalone computers. The school decides to connect them to form a LAN. The school decides to use the star topology to create the LAN. A hub/server at the centre of the network. All computers attached to the hub/server. Resources (e.g. printer) can also be connected to the hub/server. A classroom in a primary school has 6 standalone computers. The school decides to connect them to form a LAN using the star topology Explain, with reasons, what additional hardware will be required to connect the computers into a LAN. hub/switch The star topology requires all workstations to be connected to a central point so a hub/switch is needed. The computers need to be physically or wirelessly connected to the hub so cables and network interface cards or a wireless access point and WiFi adapters will be needed. A city has many libraries. Each library has several computers. All the computers in a library are connected to each other through a local area network (LAN) and the libraries are connected through a wide area network (WAN). Does checking in books at different library's in the network require a LAN or WAN ? A city has many libraries. Each library has several computers. All the computers in a library are connected to each other through a local area network (LAN) and the libraries are connected through a wide area network (WAN). Does sending a message between libraries need a LAN or WAN ? A city has many libraries. Each library has several computers. All the computers in a library are connected to each other through a local area network (LAN) and the libraries are connected through a wide area network (WAN). Does finding available books in the library you are in need a LAN or WAN? What does protocol mean in terms of communication between devices in a network? Rules for exchanging messages. Many well used protocols become standards In networks what are User access levels? Give examples Different users only have permissions to files/areas/services of the network which they actually need eg in a library sytem, the public should only be able to search eg only employees should issue books eg only managers can look at pay records. To prevent malicious or accidental corruption of parts of the network. Stops all access to/from the WAN unless it has been authorised Prevents hackers from compromising the system. What hardware is needed for a network?Routers, hubs, switches, and bridges are some examples of network hardware.
What is needed for a local area network?LAN networking requires Ethernet cables and Layer 2 switches along with devices that can connect and communicate using Ethernet. Larger LANs often include Layer 3 switches or routers to streamline traffic flows.
What are the hardware and software requirements for LAN?The hardware components of a LAN consist of:. PCs/workstations and servers.. Network Interface Card (NIC). Cabling and connectors, for example, coaxial cable and BNC connector, Unshielded Twisted Pair (UTP) and RJ-45 connector.. Hub, concentrator, and more complicated network devices such as Bridge, LAN Switch and Router.. What is a network OCR GCSE?A network is two or more computers (or other electronic devices) that are connected together for the purpose of communication. They are connected by a wired medium such as cables, or by a wireless medium such as Wi-Fi . A computer or device that is not connected to a network is called a stand-alone .
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