Authorized personnel will be properly screened for access to the IT infrastructure. Management of physical components include that of the cabling‚ NIC cards‚ LAN switches and wireless access points (WAPs). For purposes of this document explanation are given: the workstation cabling will use RJ45 jacks to physical connect to LAN switches; the NIC interfaces between the computer and the LAN physical media; the LAN switch is the device that connects workstations
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Radio transmissions do not bend round the surface of the earth‚ but RF technology combined with satellites can provide long-distance connections. Figure 5 illustrates a satellite link across an ocean. Twisted Pair Cable The most popular network cabling is Twisted pair. It is light weight‚ easy to install‚ inexpensive and support many different types of network. It also supports the speed of 100 mps. Fiber Optics Fiber optic cable uses electrical signals to transmit data. It uses light. In fiber
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to the remote end‚ split pairs‚ crossed pairs‚ reversed pairs‚ and any other mis-wiring. It tests four-pair data and voice cable links terminated with standard‚ modular‚ eight-position RJ45 jacks. Shielded ports test both shielded and unshielded cabling. This is essential for just about any network as telephones (voice) are also used in conjunction with data communications. This tester should be a part of every cable installation kit. Continuity Testers: This is an item of electrical
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Applicators can be steel reinforced concrete in buildings‚ elevators‚ high capacity radio transmitters‚ and more expensive cables lessen the changes of interference. Table 4-1 UTP Standards Category Maximum Speed Application 1 1 Mbps Telephone cabling (POTS) 2 4 Mbps Token Ring 3 16 Mbps 10BaseT Ethernet 4 20 Mbps Token Ring 5 100 Mbps (2 pair) 1000 Mbps (4 pair) 10BaseT Ethernet Gigabit Ethernet 5e 1 Mbps Gigabit Ethernet 6 10‚000 Mbps Gigabit Ethernet 6a 10 Gbps 10GBase-T
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CCNA3 Exploration Chapter 1. Study questions. 1.1 What are the three layers of the hierarchical network design model? Access‚ distribution‚ core Access‚ distribution and core. What are the advantages of designing LANs using the hierarchical model? Separates out different functions of a network. This would make it easier to manage‚ troubleshoot‚ and expand. Seperates out different functions of a network.The hierarchical model separates out different functions of a network‚ giving
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Key words Transmission paths: transmission paths also called transmission channel is the path between two nods of a network that a data communication follows. The term can refer to the physical cabling that connects the nodes on a network the signal that is communicated over the path way or a sub channel is a carrier frequency. Ground waves: ground waves are radio wave which reaches a receiver from a transmitter directly with out reflection from the ionosphere. Sky waves: a radio wave that is
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NETWORK TOPOLOGIES PRESENTED BY Alex Daniel Manjula Sanjana NandaKumar Sher Mohammed Babul Sriram Vamsi Vinodhini © 2013 Maveric Systems Limited WHAT IS A TOPOLOGY ? © 2013 Maveric Systems Limited WHAT IS A TOPOLOGY ? ▸ In computer networking‚ topology refers to the layout of connected devices. ▸ Network topologies describe the ways in which the elements of a network are mapped. They describe the physical and logical arrangement of the network nodes. ▸ Topology can also be defined as the
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Unit 4 Assignment 1: Computer Basics Review Chapter 4 Review Activities Questions Answers 1. You have created a simple electrical circuit with a battery‚ wires‚ and a light bulb. Which of the following is true about this circuit? (Choose two answers) B. The battery’s positive lead pulls current toward that lead. C. The circuit creates a direct current 2. A PC NIC and a switch port create one electrical circuit to use when sending data. The sender creates a (maximum) 1-volt electrical signal
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TABLE OF CONTENT Topic Pages 1.0 Introduction.............................................................................................................................1 1.1 Overview ……………………………………………………………………………………………..….2 2.0 Fast Ethernet ………………………………………………………………………………3-4 2.1 Overview of the Fast Ethernet ………………………………………………………………………..4 2.2 Implementation
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fibers within one cable. Fiber optics was developed by Bell labs and Corning in the late 1960s. It does not experience signal degradation over distance as would coaxial cable. School districts are aware of the need for the upgrades to fiber optic cabling‚ but costs frequently preclude the upgrade. Federal Communication Commission (FCC) rulings in October of 2004‚ that relieved incumbent local exchange carriers from having to share fiber networks that reach within 500 feet of homes‚ have led to plans
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