| | IntroductionThe term “computer network’’ means a collection of autonomous computers interconnected by a single technology. Two computers are said to be interconnected if they are able to exchange information. The connection need not be via a copper wire; fiber optics‚ microwaves‚ infrared‚ and communication satellites can also be used. Networks come in many sizes‚ shapes and forms. Uses of Computer Networks 1. Business Applications 2. Home Applications 3. Mobile Users 4. Social Issues
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VPN Mobile Office. In the UMTS air interface we have the implementation of Wideband-CDMA (WCDMA) as the underlying standard. Some the key features of W-CDMA are listed here [32]: • Supports two basic modes of duplex: FDD (frequency division duplex) and TDD (time division duplex) • Employs coherent detection on uplink and downlink based on the use of pilot symbols • Inter-cell asynchronous operation • Variable mission: on a 10 ms frame basis • Multicode transmission
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got their names” (Firestone 23). These cell phone signals are carried out through radio frequencies. Cell phones use two radio frequencies at the same time‚ meaning they are duplex devices (Firestone 24). A cell phone would only be able to work like a walkie-talkie if they were not duplex devices. Since cell phones are duplex devices‚ they use two radio frequencies. One transmits sound and the other receives it‚ allowing two people to talk at the same time (Firestone 24). Two of the main parts of
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The most obvious problem that occurs when autonegotiation is not used‚ is Answer | | unscheduled downtime. | | | human error. | | | using half duplex. | | | technology failure | _ What is the overall goal for accuracy? Answer | | Collisions should always occur on full-duplex Ethernet links. | | | Bit error rate of 1 in 1010 | | | Data received at the destination must be the same as the data sent by the source. | | | No more than one bad frame per 105 bytes of
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identified to use Orthogonal Frequency Division Multiplexing (OFDM) and uplink uses Single Carrier – Frequency Division Multiple Access (SC-FDMA). The use of Multiple Input Multiple Output (MIMO) was agreed as well. Frequency Division Duplex (FDD) and Time Division Duplex (TDD) modes as support. Paired spectrum operation named FD-LTE while unpaired spectrum as TD-LTE. New architecture‚ E-UTRAN with EPC (Evolved Packet Core) introduced. SA WG2 started study for System Architecture Evolution (SAE) to develop
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|Electronics(ECE)/Electrical(EEE)/Instrumentation(EI or AE&I) Seminar Report | ASSYMETRIC DIGITAL | |SUBSCRIBER LINE | ASSYMETRIC DIGITAL SUBSCRIBER LINE ABSTRACT ABSTRACT Digital Subscriber Lines (DSL) are used to deliver high-rate digital data over existing ordinary phone-lines. A new modulation technology called
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Switching Basics and Intermediate Routing ___________________ Cisco Networking Academy Program 3 Tobi Beernaert 2ICT3 Ciske Clarysse 2ICT3 Overview and Objectives The following case study is used to illustrate the process and documentation required for a network design. This case study presents a scenario in which the XYZ Research Company has hired a Network Consultant Group to design their network. In order to help you organize this project‚ the scenario has been broken into
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YEAR 10 INFORMATION TECHNOLOGY 2014 COURSE BOOK (v1) IT IS THE RESPONSIBILITY OF THE STUDENT TO Adhere to all aspects of the College Computer Use agreement that they have each signed. Appreciate that there will be NO warnings regarding any breach of the contract and that any such breach WILL result in the immediate suspension of their right to access the college network. Complete any outstanding work for this subject using non-college computers should their
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Quizzes 1-4 with Answers Quiz 1 _____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
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Write a paper to compare and contrast between WIMAX and LTE I. INTRODUCTIONS 4G stand for fourth generation network for mobile communication. It is better as compare to 3G or 2G network. It provides ultra broadband internet access from USB wireless modem to laptops and to other mobile devices. The two most important technologies for 4G network are WIMAX and LTE. Basic Requirement for 4G International Telecommunication Union Had specified various type of requirement for 4G
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