STUDY GUIDE CHAPTER 6

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1 STUDY GUIDE CHAPTER 6 True/False Indicate whether the statement is true or false. 1. Popular audio and media players include itunes, Windows Media Player, and open source offerings such as QuickAudio and Audacity. 2. Using speech recognition software, you can "voice surf" the Web by speaking commands instead of using your mouse. 3. A(n) on-and-off connection can have a static or dynamic IP address. 4. A domain name ends with an extension that indicates its top-level domain. 5. Downstream speed is the rate of data transmitted from your computer to the Internet. 6. Mobile Internet access allows you to easily move your access device, as in the case of vehicle-mounted satellite dishes that can be deployed when the vehicle is parked. 7. Current dial-up technology can transport data at speeds up to 6 MB downstream for a distance of about 1.25 miles. 8. DSL is digital, so data doesn't need to be changed into analog signals and then back to digital. 9. Wi-Fi handoffs from one Wi-Fi network to another are clumsy and prone to packet loss. 10. The big bonus of portable WiMAX is that you use the same Internet service provider whether you are at home or on the road. 11. Some cell phones can act as a Wi-Fi hotspot by becoming the router for a wireless network. 12. Google Apps provides a glimpse of what grid computing has to offer for productivity applications. 13. Most messaging is based on a client/server technology. 14. Distributed grids tap into thousands of PCs and Macs with Internet connections whose owners rent their computer s idle hours to a grid processing task. 15. In the context of networking, a(n) virus-protector is software or hardware designed to filter out suspicious packets attempting to enter or leave a computer. 16. NATs are intended to work within LANs to monitor and direct packets being transported from one device to another. 17. Setting up a secure VPN is easy. 18. The octets in an IP address correspond to the parts of a Web site address. 19. All IP addresses are static. 20. All IP addresses are dynamic. 21. The www in a URL is part of a domain name. 22. You must pay for a domain name.

2 23. You may use an analog modem even if your phone service is digital. 24. With a voiceband modem, actual data transfer speeds are affected by factors such as the quality of your phone line and connection. 25. Cable signals are not particularly vulnerable to environmental interference. 26. Most of today s notebooks are not equipped for Wi-Fi. 27. You can use a hotspot for mobile Internet access. 28. To use portable satellite technology you must take your satellite with you. 29. The disadvantages of WAP-enabled devices include their high price. 30. Some cell phones connect to your computer and act as a wireless modem. 31. Cloud computing is the term given to analyzing cloud patterns and, with the help of the computer, predicting the weather. 32. Cell phones that offer Wi-Fi are not capable of making VoIP calls. 33. FTP is a protocol used by Internet phone companies for free long distance. 34. P2P file sharing allows users to obtain files from other users on the Internet. 35. BitTorrent protocols dissect files into small chunks that might reside on different computers. 36. One of the most common ways of gaining unauthorized access to a network is by looking for open ports. 37. Most firewall software is preconfigured to block only unnecessarily open ports targeted by hackers. Multiple Choice Identify the choice that best completes the statement or answers the question. 38. MPEG, H.264, DivX, and Windows Media Video are examples of. a. video codecs c. file compression utilities b. audio codecs d. temporal compression 39. Suppose you want to send a photo to a friend. You plan to attach it to an message, but when you look at the file, you notice it is almost 4 megabytes. To quickly store the photo in a small file without any loss in quality, you can. a. use a file compression utility like PKZIP c. use an MPEG codec b. convert the image into a RAW file d. resave it using ripper software 40. The use of to identify human speakers is an emerging part of law enforcement and homeland security. Not only can digitized samples of voices be analyzed to confirm identity, but real-time voice print identification can be used to match speakers with known recordings of their voices. a. audio codecs c. MIDI sequences b. digital spectrographic analysis d. Audio Interchange formats 41. Manufacturers sometimes express the resolution of digital cameras as. a. terapixels c. gigabytes b. megapixels d. megabytes

3 42. Pixel interpolation causes some images, especially those that contain strong curved or diagonal lines, to develop an undesirable "bitmappy" or appearance. a. digitized c. reverse pixel b. pixelated d. cropped 43. Which of the following filename extensions is NOT a vector graphics file? a..wmf c..png b..ai d..eps 44. The Internet began with a project called. a. NSF c. ARPANET b. AOL d. WWW 45. There are estimated to be more than users of the Internet. a. 2 million c. 2 trillion b. 2 billion d. 100 million 46. Network service providers include. a. AT&T c. British Telecom b. Deutsche Telekom d. all answers are correct 47. ISPs can maintain servers for. a. music file sharing c. instant messaging b. online discussions d. all answers are correct 48. The octets in an IP address correspond to a. a. network class c. network configuration b. network location d. no answers are correct 49. Most Internet servers have an easy to remember name that is known as a(n). a. domain address c. FQDN b. ISP d. NAP address 50. is a valid top-level domain. a..ca c..gog b..can d..aol 51. Every domain name corresponds to a unique IP address that has been entered into the. a. domain database c. name server b. Domain Name System d. Internet Name Server 52. Until domain names are added to the DNS database, new sites can only be accessed by entering their numeric. a. ports c. protocols b. domain names d. IP addresses 53. DNS cache has been used by governments to keep citizens away from Web sites that supply politically or culturally inflammatory information. a. diversion c. poisoning b. rerouting d. distraction 54. You need your own domain name if. a. you use the Internet c. you have your own Web site b. you have an always-on connection d. you have a router

4 55. Technical management of the Internet's Domain Name System is coordinated by. a. the government c. CANN b. ICANN d. the Internet 56. The elapsed time for data to make a round trip from point A to point B and back is called. a. speed c. mhz b. latency d. access time 57. The rate of data that is transmitted from your computer to the Internet is. a. downstream speed c. download speed b. upstream speed d. upload speed 58. The rate of data arriving at your computer is. a. downstream speed c. download speed b. upstream speed d. upload speed 59. A fixed Internet connection that uses a voiceband modem and telephone lines is a(n) connection. a. dial-up c. DSL b. fixed d. ISDN 60. Digital telephone systems open up the possibilities for digital data transport options such as. a. cable Internet service c. WiMAX b. DSL d. Both B and C 61. service offered slightly faster service than dial-up but has today been replaced by DSL. a. ISDN c. Cable Internet b. WiMAX d. Satellite Internet 62. DSL uses to transmit data. a. phone lines c. T1 lines b. cable connections d. no answers are correct 63. A is a device that connects a computer to a telephone line and converts computer data signals into signals compatible with DSL. a. DSL filter c. DSL modem b. DSL converter d. DSL adapter 64. currently offers the fastest Internet access speeds. a. ISDN c. Satellite b. DSL d. Cable 65. Cable Internet service needs. a. circuitry to handle Ethernet protocols and a cable modem b. a cable modem and router c. Internet protocols and a cable modem d. a cable modem and phone lines 66. Satellite data transport is subject to delays of one second or more, which occur as your data is routed between your computer and a satellite that orbits 22,200 miles above the Earth. a. latency c. frequency b. conditional d. concatenation 67. Satellite Internet service and TV service requires. a. two satellite dishes c. two satellites dishes and two modems b. a satellite dish and a modem d. one satellite dish and two modems

5 68. wireless Internet service is designed to offer Internet access to homes and businesses by broadcasting data signals over areas large enough to cover most cities and outlying areas. a. Mobile c. WiFi b. Cellular d. Fixed 69. An Ethernet-compatible network standard designated as IEEE is. a. WiFi c. WiMAX b. WiLAN d. WiMAN 70. Portable Internet access includes all of the following EXCEPT. a. WiFi c. portable WiMAX b. portable satellite d. cellular 71. The ability to easily move your Internet service from one location to another is considered Internet service. a. mobile c. moving b. portable d. cellular 72. is an up-and-coming standard destined to be deployed by ISPs and cell phone carriers to allow seamless handoff between one tower and another. a. WiMAX c. Portable WiMAX b. Mobile WiMAX d. Mobile WiFi 73. Data transport rates depend on the technology of the cellular system. The generation of cellular technology associated with analog voice service is. a. 1G c. 2.5G b. 2G d. 3G 74. Sending computer data over a system requires a voiceband modem to convert digital data into audible signals. a. 1G c. 3G b. 2G d. 1G and 2G 75. replaced analog technology with digital technology and added support for text messages. a. 1G c. 3G b. 2G d. 4G 76. technologies support digital transmission for both voice and data. a. 1G c. 3G b. 2G d. no answers are correct 77. 3G technologies have speeds ranging from 200 Kbps to. a. 500 Kbps c. 2 Mbps b. 1 Mbps d. 5 Mbps 78. Examples of 3G technologies include. a. EDGE c. HSUPA b. EV-DO d. all answers are correct 79. Interim 4G technologies such as have been deployed since a. LTE c. EV-DO b. ITE d. no answers are correct 80. A communications protocol that provides Internet access from handheld devices is. a. WAP c. HAP b. WIP d. HIP

6 81. The disadvantage of WAP-enabled devices is their. a. access speed c. portability b. screen size d. all answers are correct 82. With you can easily assemble a small network just about anywhere. a. RF c. EVDO b. MiFi d. all answers are correct 83. computing depends on a grid of servers, storage devices, and protocols that offer Internet-accessible computing services ranging from consumer-level media sharing to office productivity applications and complex corporate data processing. a. Cloud c. Ambient b. Disperse d. Client 84. Most messaging is based on a(n) model. a. P2P c. LAN b. client/server d. Internet 85. Messaging and chat protocols include all of the following EXCEPT. a. IRC c. Jabber b. MSNP d. Talkie 86. VoIP software is sometimes referred to as a(n) client. a. ISP c. HTTP b. SIP d. no answers are correct 87. VoIP systems are offered by companies such as. a. AT&T c. Vonage b. magicjack d. all answers are correct 88. To set up free VoIP, you and the people you communicate with can install free VoIP clients such as. a. SysIP c. Presto b. Blink d. no answers are correct 89. The protocol allows the transfer of files from one computer to another over any TCP/IP network. a. ftp c. P2P b. http d. GRID 90. is a file sharing protocol that distributes the role of the file server across a collection of dispersed computers. a. ftp c. P2P b. http d. BitTorrent 91. With BitTorrent, as more computers request the file, they become part of a that uses peer-to-peer technology to exchange file pieces with each other. a. swarm c. leech b. seed d. choker 92. BitTorrent can be used to distribute. a. spyware c. malicious code b. adware d. all answers are correct 93. Network services such as the Web, ftp, and operate from. a. routers c. ports b. gateways d. portals

7 94. The use of automated software to locate computers that are vulnerable to unauthorized access is a port. a. search c. dig b. probe d. pry 95. The average survival time for an unprotected computer to remain uncompromised is only. a. nine seconds c. nine hours b. nine minutes d. nine days 96. Sharing files on a LAN or the Internet requires open. a. ports c. sources b. domains d. channels 97. are intended to work within LANs to monitor and direct packets being transported from one device to another. a. Routers c. Filters b. Gateways d. Firewalls 98. A IP address is one which can be accessed by packets on the Internet. a. static c. routable b. dynamic d. private 99. You can install personal VPN software such as. a. WiTopia c. HotSpotVPN b. StrongVPN d. all answers are correct 100. One important security precaution when connecting your computer to public networks is to install a(n). a. router c. office suite b. repeater d. remote PC