LCFE From early man to modern times‚ data communication have been essential part of human life and development Student NSS2 Introduction Communications is the route that been authorized from the sender to the receiver‚ Data communications is one of the most constantly fast-growing areas in the infrastructures industry of communication‚ Though data communication may seem a fairly new invention but the history of data connections dates to the early
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IP SURVEILLANCE SYSTEM An Internet protocol camera‚ or IP camera‚ is a type of digital video camera commonly employed for surveillance‚ and which unlike analog closed circuit television (CCTV) cameras can send and receive data via a computer network and the Internet. Although most cameras that do this are webcams‚ the term "IP camera" is usually applied only to those used for surveillance. There are two kinds of IP cameras: Centralized IP cameras‚ which require a central Network Video
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Benefits of Network video surveillance What is an Analog Video Security System? Cameras on a modern analog CCTV system send their video over co-axil cabling back to a digital video recorder (DVR). Most modern DVRs are a network device‚ and as such can be accessed remotely from the LAN‚ or with the proper configuration‚ from across a WAN or the internet. Video is kept on hard drives‚ typically on a FIFO basis so there is always a rolling video archive of the past X number of days. What is an
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1 ECE 4099/TRC 4002 – Professional Practice 1.0 EXECUTIVE SUMMARY Assignment 1 The management task of overseeing the deployment of fibre optic cables over a span of 200km in an urban locality is the culmination of a successful grant from the Federal Minister for Telecommunications. Projects A and B represent the two alternative cable laying solutions considered and are namely‚ underground and above ground cabling respectively. Financially‚ project B is more viable than project A albeit
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data using the analog circuit. • DSL- Digital subscriber line. A type of internet access service in which the data flows over the local loop cable from the home to the Telco central office‚ where a DSLAM uses FDM technology to split out the data and send it to a router and split out the voice frequencies and send them to a traditional voice switch. • Cable Internet- a term referring to internet access service provided by a
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ISO/OSI Reference Model: Open Systems Interconnection (OSI) is an effort to standardize networking that was started in 1977 by the International Organization for Standardization (ISO)‚ along with the ITU-T. The world has not always been so simple. Once upon a time‚ there were no networking protocols‚ including TCP/IP. Vendors created the first networking protocols; these protocols supported only that vendor’s computers‚ and the details were not even published to the public. As time went on
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These networks began on the path that has lead them to what they are today because of AT&T laying a system of Coaxial cable across the nation. Coax‚ the now common cables that run from wall cable TV outlets to today’s Televisions‚ has enough bandwidth or electrical carrying capacity‚ to transmit hundreds or even thousands of telephone calls as well as television signals. (Coaxial) For the first time in 1952‚ the republican and democratic national conventions were able to be broadcasted from
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NT1310 Unit 7 Exercise 1 1. Crosstalk: A disturbance caused by electromagnetic interference‚ along a circuit or a cable pair. A telecommunication signal disrupts a signal in an adjacent circuit and can cause the signals to become confused and cross over each other 2. Waveguides: A circular‚ elliptical or rectangular metal tube or pipe through which electromagnetic waves are propagated in microwave and RF communications. The wave passing through the medium is forced to follow the path determined
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1. A device that acts as a connection point between computers and that can filter and forward data to a specified destination is called a (Points : 1) hub. switch.A router. NIC. | 2. Which device sends data packets to all connected devices in a network? (Points : 1) Network interface card Hub.A Router None of the above | 3. The method of slicing digital messages into parcels‚ transmitting them along different communication
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Page Notes Answer 12 - 13 STP shield Performance Protects from EMI. Shield must be fully enclosed 15 Fiber Optic Cable Not susceptible to outside EMI or crosstalk interference‚ nor does it generate it . Can exceed 500Gbps 35 Cable Bandwidth is a function of Reducing frequency or distance (resistance) increases the maximum bandwidth because SNR improves 37 100 BaseT Ethernet Operating Frequency 31.25MHz 115 100Base-T4 Ethernet Existing CAT3 complaint systems could also support fast Ethernet
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