Telecommunications

Chapter 4 Telecommunications and Networking True/False Questions 1. Most organizations have some form of informal communication. Answer: True Page: 122 Level: Easy 2. A communication dyad must have feedback between the sender and receiver. Answer: False Page: 123 Level: Med 3. The Internet has proved to be a very powerful communications medium. Answer: True Page: 124 Level: Med 4. Communication quality is always dependant on the content of the message. Answer: False Page: 125 Level: Med 5. Communication distortion implies that only the meaning of a message was altered intentionally. Answer: False Page: 125 Level: Med 6. Two advantages associated with wireless communications are greater mobility and greater transmission capacity. Answer: False Page: 146 Level: Hard 7. Normally a distortion in communications within an organization has little impact. Answer: False Page: 125 Level: Med 8. Noise is the part of the message that the sender did not intend to send but somehow became part of the message. Answer: True Page: 126 Level: Med 9. A good communications dyad minimizes the distortion and minimizes the level of noise when transmitting messages. Answer: True Page: 123 Level: Easy Thompson, Information Technology and Management, Second Edition 39 Chapter 4 Telecommunications and Networking 10. Distortion can occur when data is summarized which may cause important data to be left out. Answer: True Page: 126 Level: Hard 11. Distortion can only occur when an intentional action causes the message to be distorted. Answer: False Page: 126 Level: Easy 12. Information overload is desired by those in information technology, because it leads to a competitive advantage. Answer: False Page: 129 Level: Easy 13. Digital signals are analogous to switches. They are either on or off. Answer: True Page: 130 Level: Easy 14. One example of telecommunications would be the phone system. Answer: True Page: 131 Level: Easy 15. In the past, voice communications required that the communications circuit be exclusively dedicated to a call. Answer: True Page: 131 Level: Easy 16. The purpose of a modem is to convert analog signals to digital so they can be transported over an analog channel. Answer: False Page: 132 Level: Hard 17. The “last mile” is a term used to identify the connection between small businesses and the network, which is plagued by bandwidth problems. Answer: True Page: 134 Level: Med 18. Even taking into account the Internet traffic, voice communication volume still exceeds data communication volume carried over the world's telecommunication infrastructure. Answer: False Page: 132 Level: Med 40 Thompson, Information Technology and Management, Second Edition Chapter 4 Telecommunications and Networking 19. Currently the amount of Internet traffic doubles appropriately every 100 days. Answer: True Page: 132 Level: Easy 20. According to your book advances in telecommunications have increased faster than any other type of information technology. Answer: False Page: 133 Level: Med 21. One of the changes impacting the telecommunications industry is the wide range of products and services offered. Answer: True Page: 133 Level: Easy 22. Wireless technology will not impact telecommunications. Answer: False Page: 134 Level: Easy 23. Narrowband and broadband are two terms used to describe transmission speeds. Narrowband is known for its ability to offer high rates of transmission, which are normally above 1.5 Mbps. Broadband normally reaches speeds between 64 kbps and 1.5 Mbps. Answer: False Page: 134 Level: Hard 24. Fiber optic cable is composed of glass fibers strengthened by metal wire encased in a plastic coating. Answer: True Page: 135 Level: Med 25. A benefit of a standard protocol is that vendors can develop products that can easily communicate with each other. Answer: True Page: 136 Level: Easy 26. TCP/IP are two protocols, IP is used to direct packets to their destination, TCP is used to put the packets into the correct sequence once they arrive at the their destination. Answer: True Page: 136 Level: Med 27. Cable modems are the most secure way to transmit data over the Internet. Answer: False Page: 137 Level: Med Thompson, Information Technology and Management, Second Edition 41 Chapter 4 Telecommunications and Networking 28. T-carrier systems operate at different rates of transmission; therefore organizations have a choice of speed at which they lease their T lines from the telecommunications provider. Answer: True Page: 138 Level: Hard 29. Frame relay networks can accommodate only packets of a fixed length, which is set by the network administrator. Answer: False Page: 139 Level: Med 30. Ethernet is a protocol designed originally for use in local area networks. Answer: True Page: 139 Level: Easy 31. Currently cellular telephones are the fastest growing area of wireless technology. Answer: True Page: 139 Level: Easy 32. Peer to peer networks are networks where users interact with each other directly, sometimes even using each other's hard disk space to share information. Answer: True Page: 144 Level: Easy 33. Most web sites are set up on servers and respond to requests from the client's computer; the web server almost exclusively is set up as a peer-to-peer network. Answer: False Page: 144 Level: Hard 34. Most local area networks that use wire line communications use either twisted pair, coaxial, or fiber-optic cable. Answer: True Page: 144 Level: Easy 35. Some devices such as a “brouter” perform multiple functions; the brouter acts both as a bridge and a router. Answer: True Page: 147 Level: Hard 42 Thompson, Information Technology and Management, Second Edition Chapter 4 Telecommunications and Networking Multiple Choice Questions 36. In order to improve bandwidth problems in telecommunications several approaches have emerged, examples include A) Improving electronics and increasing the bandwidth of existing copper wire B) Using Fiber optic cable C) Using Wireless technology D) All of the above Answer: D Page: 134 Level: Med 37. According to the book which of the following is considered distortion in communications? A) Routing B) Delaying the message C) Modifying the content of the message D) All of the above Answer: D Page: 126 Level: Easy 38. The types of communication presented in the book include all of the following except A) Person to Person B) Computer to Computer C) Person to Computer D) Domain to Domain Answer: D Page: 121 Level: Easy 39. The sharing of information between two or more entities is considered A) Communication B) Organizational Remuneration C) Informal Response D) Communication Dyad Answer: A Page: 122 Level: Easy Thompson, Information Technology and Management, Second Edition 43 Chapter 4 Telecommunications and Networking 40. Communication that is disseminated through an individual's network of acquaintances and friends is considered A) Communication B) Organizational Communication C) Informal Communication D) Communication Dyad Answer: C Page: 123 Level: Easy 41. ________ is the process through which data, information, or an idea is transferred from a source to a receiver. A) Distortion B) Feedback C) Communication D) Channeling Answer: C Page: 124 Level: Med 42. A disturbance in the communication process that interferes with the intended message is considered to be A) Distortion B) Noise C) Communication D) All of the above Answer: B Page: 126 Level: Med 43. According to the book which of the following is considered distortion in communications? A) Routing B) Delaying the message C) Modifying the content of the message D) All of the above Answer: D Page: 126 Level: Easy 44 Thompson, Information Technology and Management, Second Edition Chapter 4 Telecommunications and Networking 44. When a message is routed to the wrong person or when the message gets delayed are examples of A) Summarizing B) Distortion C) Noise D) All of the above Answer: B Page: 126 Level: Easy 45. The two ways to represent data according to your textbook are A) Digital and non-digital B) Analog and continuous C) Digital and analog D) Continuous and discontinuous Answer: C Page: 130 Level: Med 46. Which of the following statements is correct? A) Digital signals are used humans B) Analog signals are used by computers C) Analog signals are wave signals and digital signals are pulse signals D) A and C Answer: C Page: 130 Level: Med 47. ________ can be used to facilitate communications between organizational members and external parties such as suppliers and customers. A) Internal Communications B) External Communications C) Communications Dyad D) Telecommunications Answer: D Page: 131 Level: Med 48. A telecommunications network requires which of the following? A) A source device, a switching system, a data channel, a destination device B) A source device, relay system, a data channel, a destination drive C) A source drive, a relay hub, a data channel, a destination relay D) A drive device, a switching system, a switching channel, a destination device Answer: A Page: 131 Level: Hard Thompson, Information Technology and Management, Second Edition 45 Chapter 4 Telecommunications and Networking 49. Data Communications refers to the A) Transferring of voice data over some distance B) Transferring of both voice and data over some distance C) Transferring of data over some distance. D) A and B Answer: C Page: 131 Level: Med 50. As presented in your book, a data packet should include the _____ of the packet. A) Message# B) Destination C) Source D) Distortion Answer: B Page: 132 Level: Hard 51. Which of the following would characterize twisted pair cable? A) Normally consists of copper wire B) Used for voice transmission C) Most secure cable D) A and B Answer: C Page: 134 Level: Med 52. Bandwidth is a term generally used in telecommunications to describe or measure A) Content security B) Speed of the content flows or capacity C) Noise and distortion in the communications medium D) All of the above Answer: B Page: 134 Level: Hard 53. Which of the following is a characteristic of coaxial cable? A) An insulator separates the copper wire core from the shielding B) The copper wires are twisted five times every inch C) Metal wires are included to strengthen the cable D) All of the above Answer: A Page: 135 Level: Med 46 Thompson, Information Technology and Management, Second Edition Chapter 4 Telecommunications and Networking 54. Which of the following is a characteristic of fiber optic cable? A) An insulator separates the copper wire core from the shielding B) The copper wires are twisted five times every inch C) Metal wires are included to strengthen the cable D) All of the above Answer: C Page: 135 Level: Med 55. A ________is essentially a set of codes or conventions that are used for facilitating communications between hardware and/or software. A) Communication noise B) Communication protocol C) Telecommunication Hub D) Gateway Answer: B Page: 136 Level: Med 56. _______ is a set of standards that provide additional capabilities for copper wiring, with transmission speeds up to 1.5 Mbps. A) HTTP B) ISDN C) ATM D) TCP Answer: B Page: 136 Level: Med 57. _______ technology refers to a group of methods for transmitting at speeds up to 8 Mbps over a standard copper wire. This technology is somewhat expensive and offered in limit locations. A) ATM B) IPX C) DSL D) Coaxial Answer: C Page: 136 Level: Hard Thompson, Information Technology and Management, Second Edition 47 Chapter 4 Telecommunications and Networking 58. Characteristics of cable modems include all of the following except A) They allow transmission of Internet traffic through the TV network connect to the home B) Not all existing cable networks can support two-way transmissions C) The cable line is a dedicated resource, insulating it from deterioration due to other users D) May be susceptible to a security breach. Answer: C Page: 137 Level: Hard 59. This type of network can have data packets that vary in length, which allows the network to carry almost any size data packet associated with most communications protocols. A) ISDN B) Cable Modem C) Frame Relay D) DSL Answer: C Page: 139 Level: Hard 60. According to the book both Japan and Europe are ahead of the US in introducing new cellular technologies: Why? A) Small geographical areas B) Japan and Europe adopted a standard protocol, the US did not. C) Government Regulation D) Lack of Demand Answer: B Page: 141 Level: Med 61. A computer __________ is used to connect multiple users and computing devices together, using telecommunications technologies. A) System B) Device C) Network D) End User Answer: C Page: 142 Level: Easy 48 Thompson, Information Technology and Management, Second Edition Chapter 4 Telecommunications and Networking 62. This type of network uses a fast central computer as a central repository for data and software programs that can be shared among all the users of the network. A) Peer to Peer B) Server Based C) Wireless D) Token ring mainframe Answer: B Page: 143 Level: Med 63. Which of the following performance criteria should be considered when evaluating networks and telecommunications? A) Functional capabilities and limitations B) Compatibility C) Maintainability D) All of the above Answer: B Page: 143 Level: Med 64. A _________ is a device that is typically used to connect a computer to the network. The device is generally inserted into an expansion slot on the motherboard of the computer. A) RAM B) Gateway C) Hub D) Network Interface Card Answer: D Page: 146 Level: Hard 65. Which of the following are components of a local area network? A) Gateway B) Server C) Bridge D) All of the above Answer: D Page: 146 Level: Med Thompson, Information Technology and Management, Second Edition 49 Chapter 4 Telecommunications and Networking 66. The ____________ controls access to the network by maintaining the network account, which verifies passwords. A) Network Bridge B) Network Gateway C) Network Operating System D) Network Interface Card Answer: C Page: 147 Level: Med 67. Which of the following in an example of a network operating system used today? A) Apple Talk B) Microsoft Windows C) Novell Netware D) All of the above Answer: D Page: 147 Level: Hard 68. A ________ connects two networks of the same type that use the same protocol. A) Bridge B) Gateway C) Hub D) Router Answer: A Page: 147 Level: Hard 69. A _______ can be used to connect several networks, whereas a _________ is used to connect different types of networks. A) Bridge, Router B) Gateway, Bridge C) Hub, Router D) Router, Gateway Answer: D Page: 147 Level: Hard 70. An example of a wireless protocol using radio frequency technology which can connect a wide variety of devices and was named after a tenth-century Danish king is. A) Apple Talk B) Windows CE C) Blue Tooth D) Wi-Fi Answer: C Page: 147 Level: Hard 50 Thompson, Information Technology and Management, Second Edition Chapter 4 Telecommunications and Networking 71. Which of the following is an example of a LAN topology? A) Ring B) Star C) Bus D) All of the above Answer: D Page: 148 Level: Med 72. A ______ transmission can carry a message in one direction, whereas a _______ transmission can a message in both directions just not at the same time, and a ______ transmission can messages in both directions at the same time. A) Full duplex, half-duplex, simplex B) Simplex, half-duplex, full duplex C) Half-duplex, simplex, duplex D) Synchronous, non-synchronous, full synchronous Answer: B Page: 148 Level: Hard 73. Which of the following is false? A) The bus topology offers great flexibility in adding nodes B) The bus topology requires substantial message collision management C) The star topology is highly efficient D) The bus topology is highly dependant upon the center node. Answer: D Page: 148 Level: Hard 74. A(n) ________________ can be thought of as a controlled, self contained grouping of information resources that can be accessed using web browsers. A) Internet B) Intranet C) WireNet D) SubNet Answer: B Page: 148 Level: Hard 75. A(n) _________ is designed for facilitating communications between two or more business partners. A) Internet B) InterWare C) Extranet D) SubNet Answer: C Page: 150 Level: Hard Thompson, Information Technology and Management, Second Edition 51 Chapter 4 Telecommunications and Networking Essay Questions 76. Describe the difference between formal and informal communication in an organization. Page: 122-123 Level: Med Answer: Formal communication consists of explicit messages that are recognized as official by the organization and that tend to follow the formal organizational reporting structure. Informal communication consists of spontaneous messages distributed among friends and peers. Both types of communication are vitally important to the firm. 77. What is a communications dyad? 什麼是傳播溝通互動中的「兩造」？ Page: 123-125 Level: Med Answer: A communications network is made up of a series of dyads. A dyad consists of a sender, receiver, message, channel, and medium. Feedback is an optional component for the communications dyad. The process consists of the sender encoding the message sending over a medium to the receiver. The receiver decodes the message, and may choose to acknowledge the receipt of the message. 78. Describe individual characteristics of the sender and the receiver that may cause distortion in their communications dyad. Page: 126-127 Level: Hard Answer: Both the sender and receiver can differ in terms of their personality characteristics, their experience and knowledge, their organizational status, their personal achievement needs, their perceptions about each other, and their stress levels. Also, other factors such as gender, race, age, income status, educational level, and culture may also create distortions in their communications. 52 Thompson, Information Technology and Management, Second Edition Chapter 4 Telecommunications and Networking 79. What types of wires are used in today's wired networks? Page: 133- Level: Easy Answer: The most common types of wires used in today's wired networks are twisted pair, coaxial, and fiber optic. Twisted pair cable is copper wire commonly used in telephone lines. Coaxial cable has a copper wire core surrounded by an insulator. Coaxial cable is cover with a plastic casing, traditionally used with cable television. Fiber optic cable is composed of glass fibers encased in a plastic covering. 80. What are two types of network configurations? Page: 143-144 Level: Med Answer: There are two general types of network configurations, server based networks and peer to peer networks. Server based networks use a fast central computer as a repository for data and software programs that can be shared among the users of the network. Most websites are setup on servers. Peer to peer networks are networks where users interact with each other directly. Thompson, Information Technology and Management, Second Edition 53