focused in a directional beam • Design of data transmission system – Concerned with data rate and distance – Bandwidth ∗ Higher bandwidth implies higher data rate – Transmission impairments ∗ Attenuation ∗ Twisted pair has more attenuation than coaxial cable which in turn is not as good as optical fiber – Interference ∗ Can be minimized by proper shielding in guided media – Number of receivers ∗ In a shared link‚ each attachment introduces attenuation and distortion on the line Guided transmission media
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choose one over the other. One might be better for one type of application while the other might be a better fit‚ depending on the situation. They each have their own advantages which we will discuss in the following paragraphs. The first type of cable we will talk about is copper cabling. There are three main advantages in using copper cabling: (PoE‚ less expensive electronics and more flexibility). Power over Ethernet or PoE allows you to power phones‚ security cameras‚ Wireless Access Points (WAPs)
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shielded copper cable? Why is the more expensive shielded cable used in these situations? Use your textbook or Internet research to support your answer. Microphones‚ PA systems‚ Audio cables‚ Power cables‚ and RG-6 Cables used for television. There are three reasons‚ that I can think of‚ to use shielded cable instead of unshielded. Radio Frequency Interference (RFI) was the earliest interference engineers had to deal with. Early radio signals easily found their way into devices. Coaxial cables and shielded
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Silaba Mpasu Physical Networking Unit 6 Exercise 1 Connector Installations Twisted-pair cable On a TWISTED PAIR CABLE I chose to install an RJ-45. This is the standard Ethernet connector for most systems used today. I would first measure out the length of cable that I would need. I would then use a wire cutter to cut the length that I need‚ leaving enough room for corrections and to open the wire. I would then use wire strippers to remove a small piece of the outer most jacket. I would then choose
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same bus. The star topology is a computer network connected via cables to a central system called a hub or switch there are no direct connections between any of the computers‚ although multiple hubs or switches can be added to increase the number of computers that may be connected to the network. A bus topology is the minimum complex network configuration it creates use of a single transmission medium called a coaxial cable. The star topology consists of shielded twisted pair wire (STP)
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telephone-grade wire to extremely high-speed cable. The cable has four pairs of wires inside the jacket. Each pair is twisted with a different number of twists per inch to help eliminate interference from adjacent pairs and other electrical devices. Coaxial Television cable Coaxial cabling is difficult to install‚ it is highly resistant to signal interference. In addition‚ it can support greater cable lengths between network devices than twisted pair cable. Fiber-optic Connecting networks between
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Internet connection‚ modem requires a. Telephone Lines b. VGA Cables c. Power Cable d. Data Cable 7. Following is an example of physical Transmission Media a. Data Cable b. Coaxial Cable c. VGA Cable d. Power Cable 8. Twisted Pair cable is also known as a. Coaxial Cable b. Fiber Optic Cable c. Unshielded Twisted Pair d. Data Cable 9. Data travel in Fiber Optic cables in the form of a. Signals b. Waves c. Light d. Air
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Dom ------------------------------------------------------ Jan.19 1. What is a computer network? A computer network consits of a number of computers linked together using special ha`rdware and software to enable them to share computing resources. 2. List four main hardware and three software components on a network. 1. Hardware -Personal computers‚ mainframes‚ printers‚ and navigational control systems. 2. Software - Application software‚ desktop software‚ and networking operating
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one is trying to transmit information and the other is transmitting power. Two completely different things. Exercise 4.1.3 Applicators can steel reinforced concrete in a building‚ elevators‚ high capacity radio transmitters‚ and more expensive cables lessen the changes of interference. Exercise 4.1.4 Table 4-1 UTP Standards Category Maximum Speed Application 1 Telephone cabling (POTS) 2 4 Mbps Token Ring 3 16 Mbps 10 Base T Ethernet 4 20 Mbps Token Ring 5 100 Mbps 100 Base T Ethernet
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