Information Technology Assignment

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ASIA PACIFIC INSTITUTE OF INFORMATION TECHNOLOGY BACHELOR OF SCIENCE (HONS) IN APPLIED INFORMATION TECHNOLOGY Level C Fundamentals of Computer Networks Individual Assignment Dinindu Shachintha Dahanayake (CB005494) CF13A1AIT Supervised By Mr Udesh Amarasinghe Hand Over On 11th September 2014 Total Word Count 5000 ACKNOWLEDGEMENT First I would like to thank my mom and dad for allowing me to realize my own potential. All the support they have provided over the years was the greatest thing anyone has ever given me. Thank you mom & dad for your unwavering love and inspiration and for being such a huge courage through my experience and minimizing my stress level by being every step of the way. Next I thank my lecturer Mr.UdeshAmarasinghewho…show more content…
As time is the most valuable thing in this modern world having a good reliable internet connection will save the time. Not only that; the quality of the service we get depends on the internet connection we got. There are only a limited number of modes to get connected to internet and out of them on few modes are available in Sri Lanka. 2.1 DIAL UP CONNECTION Dial up Connection is the most commonly used and the oldest method of connecting to the internet. But it is generally the slowest method. A computer with a modem, a telephone line, Internet account obtained from an Internet Service Provider (ISP) are needed in order to connect internet through a dial up connection. Computer dials the number provided by the ISP and connects to the internet. Before the data is sent; the modem, which is used in a dialup connection(56k modem),converts the digital signal from a computer to analogue and those converted signals are transmitted through the telephone lines. And when data is received it is converted to digital signals from the analogue signals. Maximus download speed of dial up connection is about 56KBps.There are some advantages as well as some disadvantages in a dial up connection. Widely availability and low cost are the only advantages of a dialup connection. As mentioned earlier biggest or the main disadvantage is this connection…show more content…
Cellular Broadband 4. Cable modem 5. Satellite 6. Wireless The rest of the topics will discuss in a detail way about the broadband connections types mentioned above. The word "DSL" stands for Digital Subscriber Line. According to Emory.edu.com (2014) DSL (Digital Subscriber Line) is a technology for bringing high-bandwidth information to homes and small businesses over ordinary copper telephone lines. DSL provides good faithful circuit between the user and the service provider's main branch or company's central office facilitating a high speed internet connection. The downloading speed or the quality of the service depends on the distance between user and the central office. xDSL refers to different types of DSL like ADSL, SDSL, IDSL and RADSL. Out of these types generally ADSL is used in home networks as well as small scale businesses. So in this report basically only about ADSL is discussed. ADSL is "Asymmetric Digital Subscriber Line" in simple terms. According to techterms.com (2014) an asymmetric DSL (ADSL) connection allows download speeds of up to about 1.5 megabits (not megabytes) per second, and uploads speeds of 128 kilobits per second. That is why it is called ADSL and not just DSL (because of the asymmetric

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