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14 Cards in this Set
- Front
- Back
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What is a Computer Network? |
Collection of computers that communicate with one another over transmission line. |
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Three Basic Types of Networks |
- Local Area Network (LAN), - Wide Area Network (WAN), and - Internet. |
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What are the Components of a LAN? |
- Switch/Router, - LAN Device, - Network Interface Card (NIC), - UTP Cable, and - Optical Fibre Cables. |
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Switch/Router |
Special purpose computer that receives and transmits messages. |
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LAN Device |
A switch, wireless communication device, and devices for connecting to a WAN and via the WAN to the internet. |
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Network Interface Card |
Hardware that connects each device's circuitry to the cable. |
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UTP Cable |
Most common connection media. |
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Optical Fibre Cables |
Uses light rays to transmit data. |
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Wireless Network Interface Card |
Replaces an NIC to enable wireless connection. |
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Alternatives to a WAN |
Internet Service Provider (ISP) - A company that provides customers with access to the internet. |
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Application Layer Protocols |
HTTP - used between browsers and web servers. SMTP - for email transmissions. FTP - used to move files over the internet. |
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Three Tier Architecture |
1. Presentation Tier, 2. Application Tier, 3. Data Tier. |
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Hypertext Markup Language (HTML) |
Used to define the structure and layout of web pages. |
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Why Do Organisations Use Virtual Private Networks? |
Uses internet to create appearance of private, secure, point-to-point connections. Goes through a "tunnel". |
