Is a position of a point in time on a waveform cycle. Bit time - the time it takes for one bit to be ejected from a Network Interface Card at a standard speed. Encoding scheme - used by computers to represent data as characters. unshielded twisted-pair (UTP) - Copper wiring used in small-to-large networks to connect host devices to hubs and switches. Core - the central part of an optical fiber that provides the transmission region for an optical signal. Cladding - A layer of optical glass
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Hierarchical Star Many home networks use the star topology. A star network features a central connection point called a "hub" that may be a hub‚ switch or router. Devices usually connect to the hub with Unshielded Twisted Pair Strengths Easy to Install‚ Flexible IF single device or cable failure will not bring down the network Weakness If the centralize device fails the entire system is affected Bus Bus is the simplest network topology. All computers are connected to a single cable that
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Business Information Systems Learning Outcomes Week 1 HARDWARE AND SOFTWARE BASICS 1. Describe the six major categories of hardware‚ and provide an example of each. Hardware consists of the physical devices associated with a computer system. The six major categories of hardware include: • the central processing unit (CPU)—the actual hardware that interprets and executes the program (software) instructions and coordinates how all the other hardware devices work together (e
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Executive Summary The report is about the resource proposal which is aimed at improving the current poor situation in the company and increasing the efficiency of the staff. Our capital expenditure budget for the cost is about 316500 yuan. With the money‚ we need to upgrade the ergonomic equipment to make the staff more comfortable and work efficiently. Besides that‚ we need to upgrade the hardware‚ software and build network systems. These resources can not only help the staff to work more
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complex molecule that is found in all living organisms. Constructing DNA models is a great way to learn about DNA structure‚ function and replication. DNA contains the genetic information for the reproduction of life. Its structure is that of a twisted double helix that is composed of long strands of alternating sugars and phosphate groups‚ as well as nitrogenous bases (adenine‚ thymine‚ guanine and cytosine). The basic unit of structure for a DNA molecule is the nucleotide. A nucleotide is composed
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network will go down. Troubleshooting can be difficult‚ and because data is sent one packet at a time‚ adding users to the network will slow it down. (Bloom‚ 1998). Bus topologies are relatively easy to install. Star Ethernet cables or Unshielded Twisted Pair (UTP) cables usually connects Star topologies. The star is configured around a central wiring device or switching element‚ usually an intelligent hub. The hub interprets and routes electrical signals using a high-speed backplane or bus. Each device
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Principle of wireless network system The principle of wireless network system needs the tool to transmit and expand the signal or we call “Access Point” and it has PC Card. It is a LAN Card that use to connect to Access Point. It also use radio wave to transmit & expand the signal. It use frequency from 2.4 to 2.4897 GHz and it can choose the config in wireless lan. The distance of wireless connection Indoor 1) 50 meters able to speed about 1.1 Mbps 2) 80 meters able to speed about 5.5
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A BUILDING AUTOMATION SYSTEM FOR A 3-STOREY BUILDING ABSTRACT This paper discusses the structure and features of the modern day Building automation system (BAS). Building automation describes the functionality provided by the control system of a building. The control system is a computerized‚ intelligent network of electronic device designed to perform the maintenance of the mechanical systems in a building. The field technology used in this is a distributed control system with Lonworks technology
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Have you ever wondered how some of the inventions we use today came about and how they became so popular? Well for textiles‚ steam power‚ iron making‚ machine tools‚ transportation‚ and many other inventions the answer to that question is the Industrial Revolution. Though there many advantages to this time period many believe that this time period was a curse. They believe that because of the poor living conditions‚ unsafe working conditions in the factories‚ and the disregard of workers rights.
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normally a vertical shaft or space. RIP cord: A length of string built into optical fiber cables that is pulled to split the outer jacket of the cable without using a blade Core: Anything that is found within the sheath‚ usually just the twisted pairs. Commonly referred to incorrectly as the core‚ when actually it’s the conductor. Attenuation: A general term used to indicate a decrease in power from one point to another . Noise: Electromagnetic energy that interferes with the desired
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