...be connected to LAN (Local Area Network) by using a router. This type of network is a private network that links computers at a single location, such as at a home or office building. A computer with the LAN connection is allowed to different network components like files, software and devices like printers and fax machines with in the private area. A computer can be connected to a router using Ethernet cable, or a router can communicate wirelessly using radio waves. The Internet is wider than the LAN, basically it is network of networks, and it connects the different networks (LANs and/or MANs) available worldwide and makes them public. The internet connection is called WAN (Wide Area Network) that connects millions of smaller networks with over a billion computers connected at any given time. The most basic difference between a LAN and the Internet then, is that a LAN is private and localized, while the Internet is public and worldwide. A LAN is connected to a router using Ethernet cable but the internet links millions of networks through T1 telephone lines, fiber optic cable and other technologies. TO Download Complete Tutorial Hit Purchase Button IT 282 Week 7-Individua-Personal Computers on the Internetl Get Tutorial by Clicking on the link below or Copy Paste Link in Your Browser https://hwguiders.com/downloads/282-week-7-individua-personal-computers-internetl/...
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...a standard way to communicate digital transmission of data, voice, video and other network devices at the same at the same time over the traditional ‘’phone lines’’, basic telephone copper wires, called RJ-48 connectors. Prior to ISDN, the telephone system was only related to voice transportation, with very limited to none data service availability. The ISDN has the capability to support at least two or more connections at the same time, in any combination of voice, data, fax and video over a single line. At first ISDN speeds were only at max 128 kbits over download and upload speeds. Eventually carried over an E1, speed rates could be at 2048 kbps. (PC Magazine, 2001) ISDN-BRI (Basic Rate Interface), service is delivered through a pair of standard telephone copper wires at 128 kbps rate. Following available interfaces and their characteristics: * U Interface, usually a non-North American network, two wired interface between the network terminating unit and the exchange. * T Interface is a serial interface between a terminal adapter and a computer device, a digital very similar to a modem. * S Interface is usually implemented as a single interface called S/T on a NT1 (Network Termination 1), a four wire BUS that ISDN’s customer connect into. * R Interface is a definition that indicates the point between a terminal adapter and a non ISDN device that provide translation to and...
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...years has been A. mobile telephones with wireless Internet connectivity. B. chat rooms. C. satellite uplinks. D. running programs on remote computers. 2. Which among the following originate and accept messages in the form of data, information, and/or instructions? A. Communication channel B. Sending and receiving devices C. Connection devices D. Data transmission specifications 3. Sending incoming and outgoing information in the form of packets is a feature of: A. connection devices. B. sending and receiving devices. C. storage devices. D. secondary devices. 4. Which physical connection is the fastest? A. Twisted pair B. Coaxial cable C. Fiber-optics D. Microwaves 5. Which among the following is considered a line of sight communication medium? A. Broadcast radio B. Satellite communication C. Bluetooth D. Infrared 6. Most home or business wireless networks are based on a standard called: A. FireWire B. Bluetooth C. TCP/IP D. Wi-Fi 7. Microwave communication uses high frequency: A. radio waves B. infrared C. satellite communications D. optic fibers 8. To _____ is to send data to a satellite. A. uplink B. downlink C. modulate D. demodulate 9. The GPS device in an automobile uses which communication channel? A. Infrared B. Radio Frequency (RF) C. Microwave D. Satellite 10. A widely available technology that uses existing telephone lines to provide high-speed connections...
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...the proper hardware and devices to make it work. In this home network consist of one desktop computer hard wired with Arris Telephone Telephony cable modem and CATV coaxial cable wiring provided by the cable company. The computer is connected to the cable modem through Ethernet connection and also has a telephone line connection. This is also connected using Ethernet wiring to a NETGEAR Wireless N Router (WNR2000) with a Push ‘N’ Connect feature for using WiFi protection that comes in handy because the house also has a laptop that uses a Wireless-N 300 USB adapter and Playstation 3 in a separate room, both are protected by a password, this is important because the wireless will pick up other signals in the neighborhood and it provides security from other people gaining access to the computer. The differences between Rotary and Dual Tone Multi-frequency phones are with rotary phones or the rotary dial was improvements to the old form of sending telegraph signals in the 1900s. The rotary dial phones was a mounted device on a telephone or switchboard designed to send electrical pulses that corresponded with the number dialed. The design had a finger plate with holes in the top to allow people to put their fingers in it. Rotary referrers to the rotation of the finger plate on the phone as each number is dialed it turns on and off a switch at the telephone company and some are still in use today. As the years went on people worked to find a better way of improving telecommunication...
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...com/bi/resources/business-internet-gen4 The HughesNet website explains the viability of satellite internet service for businesses. The information provided demonstrates how the HughesNet Gen4 service can provide high speed internet access for multiple remote branch offices. HughesNet demonstrates how it compares favorably to other services such as cable or DSL (digital subscriber line) internet. Satellite Internet has the ability to synchronously transmit and receive data from a small client satellite dish on Earth and communicate with an orbiting satellite above Earth's equator. The orbiting satellite transmits and receives its information to a ground server on Earth called the Network Operations Center (NOC). The NOC is connected to the Internet or private network. All communication made from a satellite dish connection to the Internet must flow through the ground server. HughesNet satellite service has the flexible capabilities of reaching every office in the NHS network as well as any new locations that NHS may add as they expand their operations. Satellite service provides speeds of up to 15 Mbps, which exceeds the necessary speed required to transfer large 100MB files between each NHS office and their partner in New York City. HughesNet Gen4 service can provide end-to-end secure and encrypted data through connections with virtual private networks (VPN). However, Satellite service is vulnerable to interference from both solar flares and inclement weather. Based on the locations of the NHS...
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...DSL and cable internet, So currently you are using a standard that has been out of date for the last 12 years so lets look at what some of your alternatives are. DSL Digital subscriber line (DSL) is a family of point-to-point technologies designed to provide high-speed data transmission over traditional telephone lines.2 The reason for the limited capacity on traditional telephone circuits lies with the telephone and the switching equipment at the end offices. The actual cable in the local loop from a home or office to the telephone company end office is capable of providing much higher data transmission rates. So conversion from traditional telephone service (POTS) to DSL usually requires just changing the telephone equipment, not rewiring the local loop, which is what has made it so attractive. (Fitzgerald 344) Fixed Wireless The most popular types of fixed wireless are WiMax and wireless DSL, which requires a line of sight between the communicating transmitters. For this reason, wireless DSL has limited application because it requires tall buildings or towers to be effective. The most common use today is to provide Internet access to multitenant buildings such as remote office buildings, apartment buildings, and hotels. Transmitters are used to connect the building to the ISP, and DSL is used inside the building to connect to the wireless transceiver (Fitzgerald 348) Cable Modem One alternative to DSL is the cable modem, a digital service offered by cable television...
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...will be able to: Describe the characteristics and functions of wide area networks (WANs). Define basic signaling and transmission terminology, including analog and digital signals, Digital Signal Level Zero (DS0), broadband, baseband, multiplexing, and Digital Signal Hierarchy (DSH). Distinguish between circuit switching and packet switching, and identify various circuit-switching and packet-switching technologies. Describe the characteristics and performance of dial-up connections, including POTS and Integrated Services Digital Network (ISDN). Describe the characteristics and performance of direct connections, including leased T-carrier and E-carrier lines, cable Internet, Digital Subscriber Line (DSL), LAN connections, and fiber to the x (FTTx). Describe the characteristics and functions of Synchronous Optical Network (SONET). Describe the characteristics and functions of Asynchronous Transfer Mode (ATM). 2-2 Local Area Networks (LANs) Pre-Assessment Questions 1. Which of the following is faster than T1? a. b. c. d. 2. E1 ISDN BRI DS0 DS1 Which type of transmission uses a single channel? a. b. c. d. Broadband Digital Subscriber Line (DSL) Baseband Cable modem 3. How are digital signals measured? © 2012 CertPRESS, a division of Certification Partners, LLC — All Rights Reserved. Version 7.0 Lesson 2: Wide Area Networks (WANs) 2-3 Introduction to Wide Area Networks (WANs) wide area network (WAN) A group of computers connected...
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...February 26, 2013 DSL and Cable Modem Services Region DSL could only cover a limited area without a repeater. Therefore, it always to be used as a local loop WAN link. According to Dean (2009), “DSL uses advanced data modulation techniques to achieve extraordinary throughput over regular telephone lines.” (Dean, 2009) There are variety types of DSL and the types could be divided as asymmetrical and symmetrical. ADSL is the most common type of DSL that connect home network to the Internet through telecommunications switches. The DSL connection needs a DSL model to alternate signals between the telephone line and the computer. DSL makes use of the existing telephone infrastructure as the dial-up access. However, it applies the technique of frequency-division multiplexing which decides the channel into 3 separate links. Therefore, DSL could provide higher transmission rate and guarantee the users to talk on the phone simultaneously. Broadband or cable Internet access is another prevalent residential access method. A residence obtains cable Internet access from the same company that supports it cable television. As with DSL, cable access is asymmetric, with the downstream channel possesses a higher transmission rate. The difference is that cable Internet access is a shared broadcast medium. Therefore, if there are several users utilize the downstream channel simultaneously, the actual transmission rate is lower. Dean mentioned: “cable broadband access continues to service...
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...computers. 2. Describe the three types of data flows. a. There are three ways to transmit: simplex, half-duplex, and full duplex. Simplex is one-way transmission, such as that with radios and TVs. Half-duplex communication link is similar to a walkie-talkie; only one computer can transmit at a time. Full-duplex transmission, you can transmit in both directions simultaneously. 3. Describe three types of guided media. a. Three types of guided media are twisted pair wire, coaxial cable, or fiber-optic cable. Twisted pair wire is most commonly used. It is a pair of wires used in standard telephone wiring and in LANs. They are twisted to reduce interference caused by the other twisted pairs in the same cable bundle. Coaxial cable is insulated wire that runs through the middle of a cable. A second braided wire surrounds the insulation of the inner wire like a sheath. Fiber-optic-cable also is becoming widely used. In this transmission medium that uses glass or plastic cable instead of copper wires. This cable uses light pulses from lasers or LEDs that carry information inside hair-thin strands of glass or plastic. 4. Describe four types of wireless media. a. Four types of wireless media are radio waves, inferred, microwaves, and satellite. One of the most commonly used forms of wireless media is radio. This is most commonly used in wireless home internet. Radio data transmission from a single point such as a wireless router. Infrared...
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...page 113 in your book * 3-6 Part 1 1. How does multipoint circuit differ from a point-to-point circuit? Multipoint is also called a shared circuit. In this configuration, many computers are connected on the same circuit. This means that each must share the circuit with the others, much like a party line in telephone communication. The disadvantage is that only one computer can use the circuit at a time. When computer is sending or receiving data, all others must wait. The advantage of multipoint circuits is that they reduce the amount of cable required and typically use the available communication circuit more efficiently. Multipoint configurations are cheaper than point-to-point configurations. Point-to-point configuration is so named because it goes from one point to another (e.g., one computer to another). These are also called as dedicated circuits because they are dedicated to the use of these two computers. This type of configuration is used when the computers generate enough data to fill the capacity of the communication circuit. This can get very expensive, particularly if there is some distance between the computers. 2. Describe the three types of data flows. Circuits can be designed to permit data to flow in one direction or in both directions. There are three ways to transmit: simplex, half-duplex, and full duplex. Simplex is one-way transmission, such as that with radios and TVs. Half-duplex communication...
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...Part 1 R1 What is the difference between a host and an end system? List the types of end systems? Is a Web server an end system? A host and an end system are terms that are used interchangeably meaning that a host is an end system. The types of application programs that run are web browser programs, web server programs, and e-mail readers and senders. So Yes a web server is an end system. R4 List six access technologies. Classify each one as residential access, company access or mobile access Cable Modems -> Residential Access Digital subscriber Line -> Residential Access Hybrid fiber-coaxial cable -> Residential Access Ethernet Technologies -> Company Access Wireless LAN -> Wireless Access Bluetooth -> Wireless Access R5 Is HFC transmission rate dedicated or shared among users? Are collisions possible in a downstream HFC channel? Why or Why not? HFC transmission is in fact shared among users, it has protocols that are created to limit if not reduce the possibility of collisions. R8 What are some physical media that Ethernet can run over? Ethernet can use twister pair and coaxial. R9 Dial-up modems, HFC, and DSL are all used for residential access. For each of theses technologies provide a range of transmission rates and comment on whether the transmission rate is shared or dedicated. Dial-up is a dedicated transmission that servers 56.6kbps and under. HFC is a shared transmission and the...
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...DSL is available at a cost of $60 per month for 1.5 Mbps down and 384 Kbps up. DSL point-to-point technologies designed to provide high-speed data transmission over traditional telephone lines. The reason for the limited capacity on traditional telephone circuits lies with the telephone and the switching equipment at the end offices. The shorter the distance, the higher the speed, because with a shorter distance, the circuit suffers less attenuation which means a longer distance from the station, your speed/connection suffers. Cable modem service is available for a cost of $50 per month for 1.5 Mbps down and 640 Kbps up. Cable modem architecture is very similar to DSL—with one very important difference. DSL is a point-to-point technology whereas cable modems use shared multipoint circuits. With cable modems, each user must compete with other users for the available capacity. Furthermore, because the cable circuit is a multipoint circuit, all messages on the circuit goes to all computers on the circuit Wireless DSL is available in her apartment building for $45 per month for 1.5 Mbps down and 256 Kbps up. Wireless DSL, which requires a line of sight between the communicating transmitters. For this reason, wireless DSL has limited application because it requires tall buildings or towers to be effective. The most common use today is to provide Internet access to multitenant buildings such as remote office buildings, apartment buildings, and hotels. Transmitters are used to...
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...Physical Networking Unit 1 Lab 1 Data on fixed Line vs. Cellular Debate In this paper I will go over the pros and cons of having a fixed line network vs. a cellular network. When making this decision there are several things to consider, the most important is what this network is going to be used for. I am going to first go over the fixed line network then follow up with the cellular network. At the end of this paper I will do a recommendation to a new company that wants to open up a Skype- style service as to whether they should use a fixed line or a cellular network. Fixed line telephones was the main form of communication in 1877 and this was the case up to the time when cellular phone came into the world. Fixed lines are in every home and building today so everyone has the ability to have telephone and data service. To receive or transmit data over the fixed line a modem is needed on each end of the line. The modem takes the digital information and turns it into tones that have been specifically selected for the transmission over the telephone network. The modem on the other end is responsible for turning the tones back into the digital data. Modems transmit data over a telephone network that is designed for voice so the data rates were limited until digital subscriber line (DSL) was introduced. DSL utilizes the existing analog phone line so no need for new equipment other than modems that can convert the digital data into high-frequency tones along with a filter at...
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...standards that you want to implement. The type of media required for specific devices is dependent on the network hardware. The two main types of transmission media include: cable and free space. Cable had long been the commonly implemented media for data transmission (telephone, television, Computers). Even Though the current trend is towards wireless implementations, cable is generally still needed for backbones and certain types of networks. The three basic types of cables are: Twisted pair. Coaxial. Fiber optic. One of the basic ways to get started was a dial-up connection internet, which has been around since the 1980’s. Dial-up internet access may be used where other forms are not available or the cost is too high, as in rural or very remote areas. This brings us to Twisted-pair cables, which would fall under one of the four categories Category 1- Traditional telephone cable, not designed for data. Supports low speed communication, such as dial-up lines Category 2- Contains two-twisted pair of cables and supports data transmission and supports up to 4Mbps Category 3- contains four twisted pair of cable and supports up to 16Mbps Category 4- contains four twisted pair of cable and supports up to 20Mbps As Technology grew, the networking system had to also grow along with it. Network Cables would have to be updated and DSL and Broadband would come into the picture. Updating how we use the internet today, now most everything is wireless mostly free-space which...
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...Broadband Internet The original dialup connections offered by telephone companies required complete use of the telephone cable to connect to the Internet (meaning that no calls could be placed or received during the Internet connection). Why is this inefficient for establishing a connection to the Internet? What was the limitation of the data rates available on this type of Internet connection? First you had to make sure that your call waiting feature was turned off so that there wouldn’t be any interruptions in the service. Because it was like using the telephone, your data rates were charged as long distance telephone calls by the minute. 9.1.2 The term broadband Internet generally refers to higher-speed and constantly available connections to the Internet. The term represents an evolution of Internet connectivity, but it originally referred to the type of media usage. Broadband and baseband are the two types of media usage available. Briefly define these terms and explain the difference between them. Broadband – The term broadband commonly refers to high-speed Internet access that is always on and faster than the traditional dial-up access. It also includes several high-speed transmission technologies such as Digital Subscriber Line (DSL) Cable Modem. Baseband – refers to the original frequency range of a transmission signal before it is converted, or modulated, to a different frequency range. The difference between baseband and broadband is that baseband uses digital signaling...
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