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Unit 3 Exercise 1 Nt1310

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| Unit 3. Exercise 1. | | Specifications - Definitions |

| Unit 3. Exercise 1. | | Specifications - Definitions |

NT1310: physical networking

April 15, 2014
Authored by: Nicholas Rapisardi
NT1310: physical networking

April 15, 2014
Authored by: Nicholas Rapisardi

1. Application (in terms of cabling infrastructure): The application layer is the OSI layer closest to the end user, which means both the OSI application layer and the user interact directly with the software application. When determining resource availability, the application layer must decide whether sufficient network or the requested communication exists.. (OSI_model#Layer_7:_application_layer) 2. Unshielded twisted-pair: UTP cable is a popular cable used in computer networking that consists of two shielded wires twisted around each other. In the image to the right, is an example of the different network cables you're likely to encounter. (/jargon/u/utpcable.htm) 3. Shielded Twisted-pair: Twisted Pair (STP) has a fine wire mesh surrounding the wires to protect the transmission; Unshielded Twisted Pair (UTP) does not. Shielded cable is used in older telephone networks, network, and data communications to reduce outside interference. In the picture to the right, is an example of what these cables look like inside. (jargon/t/twispair.htm) 4. Fiber-Optic cable: A fiber optic cable is a network cable that contains strands of glass fibers inside an insulated casing. These cables are designed for long distance and very high bandwidth (gigabit speed) network communications. (Mitchell) 5. Dark Fiber: Dark fiber refers to unused fiber-optic cable. Often times companies lay more lines than what's needed in order to curb costs of having to do it again and again. The dark strands can be leased to individuals or other companies who want to establish optical…...

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