theoretical advantages over the stochastic CSMA/CD of Ethernet. Physically‚ a token ring network is wired as a star‚ with ’hubs’ and arms out to each station and the loop going out-and-back through each. Cabling is generally IBM "Type-1" shielded twisted pair‚ with unique hermaphroditic connectors‚ commonly referred to as IBM data connectors. The connectors have the disadvantage of being quite bulky‚ requiring at least 3 x 3 cm panel space‚ and being relatively fragile. Initially (in 1985) token ring
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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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TYPES OF NETWORKING A computer network is a telecommunications network that allows computers to exchange data. The physical connection between networked computing devices is established using either cable media or wireless media. The best-known computer network is the Internet. Network devices that originate‚ route and terminate the data are called network nodes.[1] Nodes can include hosts such as servers and personal computers‚ as well as networking hardware. Two devices are said to be networked
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_____1. A local area network is: a) a large central network that connects other networks in a distance spanning exactly 5 miles. b) a group of personal computers or terminals located in the same general area and connected by a common cable (communication circuit) so they can exchange information. c) a network spanning a geographical area that usually encompasses a city or county area (3 to 30 miles). d) a network spanning a large geographical area (up to 1000s of miles)
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Exercise 4.1. Why are standards so important for NICs‚ connectors‚ and media? The NIC works at the physical and Data Link Layer only and does not use TCP or IP those are programs that are on your computer. Standards are put in place to make everything work good and ease. They are also developed to allow teaching. Without having standards there is chaos‚ in the computer world chaos means everyone goes back to using typewriters and mailing things through the post office. Exercise 4.1.2 The voltage
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E S S AY S E R I E S FALL 2010 The Future of Digital Communications: Technical Perspectives Edited by Fernando Laguarda Vice President‚ External Affairs and Policy Counselor Time Warner Cable www.twcresearchprogram.com For more information: Fernando Laguarda 901 F Street‚ NW Suite 800 Washington‚ DC 20004 Phone: (202) 370-4245 TABLE OF CONTENTS Introduction ......................................................................................................................
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CHAPTER ONE 1.0 SIWES INTRODUCTION The Students Industrial Work Experience Scheme (SIWES) is one of the Federal Government policies established under decree No 47 of 1971 of industrial training fund. It’s also a skill-acquisition programme designed for the tertiary institutions as a complementary programme to the theoretical education and laboratory and workshop practices engaged in by students in tertiary institutions which‚ by industrial standards‚ are inadequate or insufficient to serve the
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Content iv About the Company 1. Introduction to Networking Definition Requirement of Networking 2. Types of Network LAN (Local Area Network) WAN (Wide Area Network) 3. Network Models OSI Model 4. Cables Twisted Cable Coaxial Cable Fibre Optic 5. Networking Devices Network Interface Card Hub Switch Router 6. IP Addressing Introduction Private IP Masking Subnetting Example 7. LAN Solution Requirement Solution Specification
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CCTV VIDEO TRAINING MANUAL Someone once said‚ "Knowledge is the key to success". This rule also applies to the installation and maintenance of CCTV camera equipment. Have you ever installed a CCTV camera system and then had to go back to solve a problem that was overlooked. A basic understanding of CCTV video signals‚ can save you hundreds of man hours‚ improve customer relations and increase job profitability all at the same time. This manual will discuss problems and solutions for CCTV camera
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1. Describe the difference between an analog signal and a digital signal? Analog signal has a smooth consistency over a vary of time. An example of analog signal is voice. Digital signal is smooth‚ but after a period of time‚ it will change its consistency. An example of digital signal is text. 2. What is the function of a dial up modem? A dial up modem‚ modulates the digital data received from a computer‚ and transfers it into an analog signal‚ which then transmits down a telephone line. The
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