2.7 Internet And Cellular Connection Types Flashcards
Compare and contrast Internet connection types, network types, and their features.
What are the standard internet connection types?
Cable, DSL, Dial-up, Fiber, Satellite, ISDN, Cellular (tethering and mobile hotspot), Line-of-sight wireless internet service.
What are the different network types?
LAN, WAN, PAN, MAN, WMN.
What is LAN?
LAN = Local Area Network. Usually runs an Ethernet connection. It could be a build or group of buildings all on the same network.
What is WAN?
WAN = Wide Area Network, which is communication over a longer distance like across the country or across the world. Slower in overall connection speeds. There are many different ways to connect a WAN.
What is MAN?
Metropolitan Area Network, and it sits somewhere between a LAN and a WAN. It is a network in your city that is usually larger than a LAN, but smaller than a WAN.
What is PAN?
A Personal Area Network that will be used JUST for you. You own this private network. Examples could include Bluetooth devices and speakers.
Explain the “cable” connection type.
This is commonly referred to as broadband, or a cable modem. You can have various types of connection through broadband such as internet, voice, and tv. DOCSIS is the standard used to send data across cable modems. Uses COAX cable as the connector type.
Explain the DSL connection type.
This uses you homes phone lines. To benefit from this type of internet, you have to be close to a central office (CO). There is a 10,000 ft limitation from the CO. Download speeds are determined based on how close or far you are from the CO.
Explain the “dial-up” connection type.
This is uses our standard analog voice telephone line.s Commonly you will see 56 kbit/s modems. Very slow speeds and not used anymore. This is considered a legacy system.
Explain the “fiber” connection type.
This provides high speed networking, voice connectivity, video, and data. It offers hundreds of HD video channels, and can achieve 1 Gbps internet speed. It also offers 1 TB of cloud storage with 2 TB of DVR. A typical Fiber connector uses a plastic end.
Explain the “satellite” connection type.
This is a non-terrestrial form of communication. It send data up into space, and the satellite sends that data back to a local station. This is relatively high in cost. 50 Mbps down speeds, and 3 Mbps up speeds are common. This is commonly used for remote sites and difficult-to-network sites. There is, however, high latency, roughly 250 ms up, and 250 ms down. Issues also happen during rain, blocking the 2 GHz signal.
Explain the ISDN connection type.
ISDN stands for Integrated Services Digital Network. There are two types of ISDN. The first is BRI (Basic Rate Interface) or 2B+D. It has two 64 kbps bearer (B) channels, and one 16 kbps signaling (D) channel. The second is known as PRI (Primary Rate Interface). This is usually delivered over a T1 or E1 connection. T1 supports 23 bearer channels (B) and a signal channel (D). E1 supports 30 bearer (B) channel, a signal channel and a separate alarm channel. These are commonly used as connectivity from the PSTN (Public Switched Telephone Network) to a local phone system (PBX - Private Branch Exchange). This is a legacy connection.
Explain the different types of cellular connections.
Usually used to connect mobile devices like cell phones. The term comes from separate land into cells. Antenna coverage’s a cell with certain frequencies. You can use TETHERING, which turns your phone into a wireless router. If you are connecting multiple devices to you phone via the 802.11 connection, your phone becomes a MOBILE HOT SPOT. Anyone in your local area can use your phone for internet access.
Explain “line-of-sight” connection.
This provides service over a wide geographical area. This is a line of site communication. Usually high antennas that provide a visual path. These provide high frequencies. This is common in metropolitan areas and cover many homes simultaneously. There ARE options for non-line-of-sight that provide lower frequencies. A common form on line-of-site internet is WiMAX. They will install an antenna at your house, which will then connect to the other WiMAX antennas in your area. WiMAX stands for Worldwide Interoperability for Microwave Access.
What is WMN?
WMN (Wireless Mesh Network) is a hybrid wireless topology in which most nodes connect in a mesh network while also including some wired machines. Nodes act like routers; they forward traffic for other nodes, but without wires.
