article, I will describe the voice and data communication systems I use to perform my job as an online reseller. The Telephone System I pay a monthly service fee to AT&T so that my home telephone is allowed to access the PSTN. The PSTN is a circuit switching network, which means a dedicated circuit is opened for a communication until that communication is closed by either of the involved parties. When I lift the handset, the hook switch inside my telephone closes and connects my telephone to the central
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Annotation 3 2 PACKET SWITCHING 3 3 КОММУТАЦИЯ ПАКЕТОВ 6 ТЕРМИНОЛОГИЧЕСКИЙ СЛОВАРЬ 10 СПИСОК ЛИТЕРАТУРЫ 11 Annotation This text describes packet switching, its modes and history. The main topic of this text is how packet switching works. Packet switching is a digital networking communications
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MIS589_WK4_Mini-case-MegaCorp_PC Questions: MegaCorp is a large manufacturing firm that operates 5 factories in Dallas, 4 factories in Los Angeles, and 5 factories in Albany, New York. It operates a tightly connected order management system that coordinates orders, raw materials, and inventory across all 14 factories. What type of WAN architecture and WAN service would you recommend? Why? Recommendations: When designing a WAN, numerous factors must be considered. Organizations attempting to connect
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finance ← High supplier power means that firms in the industry will have to pay high prices for whatever is being supplied ← Suppliers have high bargaining power if: • there is a concentration of suppliers • the costs of switching between suppliers are high, e.g. the item supplied is unique or highly differentiated • there is the possibility of forwards integration by the supplier if it does not get the prices it seeks • the industry is not
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Protocol Choices April 28, 2013 Team 5 (John Castro, Ruben Barragan, Teri Jordin, Saul Nolasco) There are many choices to make when you are deciding how your network will communicate with each other. There are a lot of protocols to take into consideration that will help make this possible. We have decided that for our WAN protocols, we will go with using frame relay. We will explain why we have chosen to go with frame relay, but first we will explain why the other choices are did not fit
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existing competitors. Entry barrier is an obstruction that makes it difficult for a company to enter an industry. Some possible barriers to entry are: * Economic of Scale * Product Differentiation * Capital Requirements * Switching Costs * Access to Distribution Channels. * Cost Disadvantages Independent in Size * Government Policy 2) Rivalry Among Existing Firms A competitive move by one fir can be expected to have noticeable effect on its competitors and
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transmission rate between the sending host and switch#1 is R1. The transmissions rate between switch#1 and switch#2 and between switch#2 and the receiving host are R2 and R3, respectively. Assuming that the switches user store-andforward packet switching, what is the total end-to-end delay to send a packet of length L? (Ignore queuing, propagation delay, and processing delay.) 3, (10 points) (a) How long does it take for a packet of length 1,000 bytes to be delivered from the sending host to the
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advantages and disadvantages of circuit and packet switches. Considerations for performance, speed and throughput potential. The reliability and predictability of end-to-end transmission. The importance of the major protocols for circuit switching and packet switching. Considering these choices are a vital part of any network protocol. Open System Interconnection OSI or Open System Interconnection is how applications can communicate over a network by using a reference model. The reference model’s
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The four major protocols for circuit switching and packet switching are as follows: • X.25 • Frame Relay • ATM or Asynchronous Transfer Mode protocol • TCP/IP X.25 is probably one of the very first of packet switching protocols. It performs really well, especially considering how long it has been around. X.25 uses a virtual circuit approach, mainly using POTS or plain old telephone service lines, which are different from lines such as ISDN. The POTS lines
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ordered the circuit. Also known as a line, leased circuit, and point-to-point line. Circuit switching-The overall process by which a series of telco devices called circuit switches connect a circuit from one customer to the other, with the device’s logic taking incoming bits on one segment in the link and forwarding those bits out the matching outgoing segment, without storing bits. Packet switching-Process of forwarding customer data in a WAN by looking at the header of the messages sent into
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