Networks
Overzicht
Every time you stream a video, send a message or print to a shared office printer, a hidden chain of devices is quietly moving your data from one machine to another. A network is simply two or more devices joined together so they can share data and resources, and the moment computers are connected they need rules and special hardware to decide where each piece of data should go. Understanding that hardware is what separates someone who just uses a network from someone who can explain and fix one.
In this lesson you will meet the devices that build a network: the NIC that gives a machine its identity, the hub and switch that join devices into a local network, the bridge that links two such networks, and the router that connects you to the wider internet. You will see how Wi-Fi and Bluetooth carry data without wires, how cloud storage keeps your files on distant servers, and how a LAN, a WLAN and a WAN differ in size and purpose. By the end you will be able to describe each device and choose the right one for a given situation.
Doelstellingen
- Router.
- The operation and purpose of a router including: • connecting networks and devices to the internet • storing computer addresses in a router • routing data packets.
- Common network devices.
- Including: network interface cards (NIC), hubs, bridges, switches.
- wi-fi and Bluetooth.
- The uses of wi-fi and Bluetooth Connecting a device to a network using: • wi-fi • Bluetooth Similarities and differences between Bluetooth and wi-fi.
- Cloud computing.
- The characteristics, uses and issues relating to cloud computing How data is stored, managed and shared using cloud computing Advantages and disadvantages of using cloud storage compared to other methods.
- Common network environments.
- Characteristics, uses and purpose of an extranet, intranet and the internet The differences and similarities between an extranet, intranet and the internet.
- Network types.
- Local Area Network (LAN), Wireless Local Area Network (WLAN), Wide Area Network (WAN) and the differences between these networks.
Audioles
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Mindmap
Dit onderwerp is in kaart gebracht zodat je ziet hoe de ideeen samenhangen.
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Flashcards
Snelle geheugentraining op wat bij dit onderwerp getoetst wordt.
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Lesnotitie
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Installeer de Green Bridge CBT-app op je telefoon of computer voor de volledige IGCSE-bibliotheek: examens uit voorgaande jaren, correctiemodellen, mindmaps, flashcards en audiolessen.
Lesevaluatie
Gefeliciteerd met het voltooien van de les op Networks. Nu je de sleutelconcepten en ideeën, het is tijd om uw kennis op de proef te stellen. Deze sectie biedt een verscheidenheid aan oefeningen vragen die bedoeld zijn om uw begrip te vergroten en u te helpen uw begrip van de stof te peilen.
Je zult een mix van vraagtypen tegenkomen, waaronder meerkeuzevragen, korte antwoordvragen en essayvragen. Elke vraag is zorgvuldig samengesteld om verschillende aspecten van je kennis en kritisch denkvermogen te beoordelen.
Gebruik dit evaluatiegedeelte als een kans om je begrip van het onderwerp te versterken en om gebieden te identificeren waar je mogelijk extra studie nodig hebt. Laat je niet ontmoedigen door eventuele uitdagingen die je tegenkomt; beschouw ze in plaats daarvan als kansen voor groei en verbetering.
- Which device sends a data packet only to the computer whose MAC address matches, rather than to every device? A. Hub B. Switch C. Bridge D. Modem Answer: B
- Which address is permanently fixed to a device when it is manufactured? A. IP address B. Web address C. MAC address D. Email address Answer: C
- Which device is used to connect a local area network to the internet? A. Hub B. Switch C. Bridge D. Router Answer: D
- Which network environment is private to a single organisation and sits behind a firewall? A. Internet B. Intranet C. Extranet D. WAN Answer: B
- Which wireless technology is best suited to sending data over a short distance between just two devices, such as a phone and a headset? A. Wi-Fi B. WAN C. Bluetooth D. Satellite Answer: C
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Aanbevolen Boeken
Oefen Proefexamenvragen
Wilt u proefexamenvragen over Networks oefenen? Download de Green Bridge CBT-app voor toegang tot proefexamenvragen en volledige oefentoetsen over dit onderwerp.
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