Describes cables‚ fire ratings and shielding Unshielded Twisted Pair (UTP) Types of Ethernet and phone cables twisted around each other to decrease interference from EMI. Has no shielding. Shielded Twisted Pair (STP) Same as the UTP cables except it is shielded in a metal sheath around it to stop external interference. Fiber-Optic Cable A cable that uses glass to transmit data using light waves. Dark Fiber Optical fiber that has already been laid but is not currently being used. Coaxial Cable A Cable
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Section 1 Introduction 1.1 COMMUNICATIONS Computer communications is the process of sharing data‚ programs‚ and information between two or more computers. We have discussed numerous applications that depend on communication systems‚ including: • E-mail – Provides a fast‚ efficient alternative to traditional mail by sending and receiving electronic documents. • Instant messaging – Supports direct‚ “live” electronic communication between two or more friends or buddies. • Internet
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Ethernet‚ 10BASE5 (also known as thick ethernet or thicknet) was the original commercially available variant of Ethernet For its physical layer it used cable similar to RG-8/U coaxial cable but with extra braided shielding Disadvantages Adding new stations to network was complicated by the need to accurately pierce the cable. The cable was stiff and difficult to bend around corners. One improper connection could take down the whole network and finding the source of the trouble was difficult
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greatest throughput? (C) Full-duplex 10. What part of a cable protects it against environmental damage? (A) Sheath 11. With everything else being equal‚ a network using which of the following UTP types will suffer the most cross talk? (A) CAT 3 12. What are two advantages of using twisted-pair cabling over coaxial cabling on a network? (B) Twisted-pair cable is less expensive. (E) Twisted-pair cable is required for modern transmission standards. 14. Which of
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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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– Definitions Horizontal Cable- The cabling between and including the telecommunications outlet and the horizontal cross-connect. Backbone Cable- A cable connection between telecommunications or wiring closets‚ floor distribution terminals‚ entrance facilities‚ and equipment rooms either within or between buildings. Patch Cords- Any flexible piece of cable that connects one network device to the main cable run or to a patch panel that in turn connects to the main cable run. Connectors- With respect
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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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Communication Systems EEE F311 Contents 1 Aim of the course‚ what to expect? 2 Course content 3 Instructions about the course 4 Introduction/Discussions Aim of the course … Understanding signals and systems Analog & Digital modulation/transmission techniques Understanding important block-sets of communication system Information theory Analysis of communication systems Recent trends in communication References required B.P. Lathi‚ Modern
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BSIT-3 Date Submitted: June 24‚ 2013 1. Twisted Pair Wire Physical Specification: -Twisted pair wire is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of canceling outelectromagnetic interference (EMI) from external sources; for instance‚ electromagnetic radiation from unshielded twisted pair (UTP) cables‚ and crosstalk between neighboring pairs. It was invented by Alexander Graham Bell.
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A TECHNICAL REPORT ON THE STUDENT INDUSTRIAL WORK EXPERIENCE SCHEME (SIWES) AT Centre for Computer Engineering‚ 9/14 Mbonu Ojike Street‚Ikenegbu Owerri‚ Imo State. Presented By Francis
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