Chapter 7 Telecommunications, the Internet, and Wireless Technology Question 1) Telephone networks are fundamentally different from computer networks. 2) Increasingly, voice, video, and data communications are all based on Internet technology. 3) Firms in the past used two fundamentally different types of networks: telephone networks and computer networks. 4) Due to continuing telecommunications deregulation and information technology innovation, telephone and computer networks are slowly converging into a single digital network using shared Internet-based standards and equipment. 5) Increasingly, voice and data communication as well as Internet access are taking place over broadband wireless platforms, such as cell phones, handheld digital devices, and PCs in wireless networks. 6) Each computer on the network contains a network interface device called a network operating card (NOC). 7) Contemporary digital networks and the Internet are based on four key technologies: client/server computing, the use of packet switching, the development of widely used communications standards and PC operating systems. 8) Pocket switching is a method of slicing digital messages into parcels called pockets, sending the pockets along different communication paths as they become available, and then reassembling the pockets once they arrive at their destinations. 9) Packet switching makes much less efficient use of the communications capacity of a network. 10) TCP refers to the Transmission Control Protocol (TCP), which is responsible for the delivery of packets and includes the disassembling and reassembling of packets during transmission. 11) IP refers to the Internet Protocol (IP), establishes a connection between the computers, sequences the transfer of packets, and acknowledges the packets sent. 12) A digital signal is represented by a continuous waveform that passes through a communications medium; analog signals are used for voice communication. 13) A analog signal is a discrete, binary waveform, rather than a continuous waveform. 14) A modem is a device that translates digital signals from a computer into analog form so that they can be transmitted over analog telephone lines.