About Lesson
Internet Connections
Explain how LANs and WANs interconnect to the internet.
Internet Access Technologies
There are many ways to connect users and organizations to the internet:
- Popular services for home users and small offices include broadband cable, broadband digital subscriber line (DSL), wireless WANs, and mobile services.
- Organizations need faster connections to support IP phones, video conferencing and data center storage.
- Business-class interconnections are usually provided by service providers (SP) and may include: business DSL, leased lines, and Metro Ethernet.
Home and Small Office Internet Connections
| Connection | Description |
|---|---|
| Cable | High bandwidth, always-on internet offered by cable television service providers. |
| DSL | High bandwidth, always-on internet connection that runs over a telephone line. |
| Cellular | Uses a cell phone network to connect to the internet. |
| Satellite | Major benefit to rural areas without Internet Service Providers. |
| Dial-up telephone | An inexpensive, low bandwidth option using a modem. |
Businesses Internet Connections
Corporate business connections may require:
- higher bandwidth
- dedicated connections
- managed services
| Type of Connection | Description |
|---|---|
| Dedicated Leased Line | Reserved circuits within the service provider’s network that connect distant offices with private voice and/or data networking. |
| Ethernet WAN | Extends LAN access technology into the WAN. |
| DSL | Business DSL is available in various formats including Symmetric Digital Subscriber Lines (SDSL). |
| Satellite | Can provide a connection when a wired solution is not available. |
The Converging Network
- Before converged networks, an organization would have been separately cabled for telephone, video, and data. Each of these networks would use different technologies to carry the signal. Each of these technologies would use a different set of rules and standards.
- Converged data networks carry multiple services on one link including:
- data
- voice
- video
- Converged networks can deliver data, voice, and video over the same network infrastructure. The network infrastructure uses the same set of rules and standards.
Other related topics
| Topic Title | Topic Objective |
| Network Components | Explain how host and network devices are used. |
| Network Representations and Topologies | Explain network representations and how they are used in network topologies. |
| Common Types of Networks | Compare the characteristics of common types of networks. |
| Internet Connections | Explain how LANs and WANs interconnect to the internet. |
| Reliable Networks | Describe the four basic requirements of a reliable network. |
| Network Trends | Explain how trends such as BYOD, online collaboration, video, and cloud computing are changing the way we interact. |
| Network Security Basic | Identify some basic security threats and solution for all networks. |
Other useful information
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