Computer, Chapter 10 Review Flashcards
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About which of the following do privacy advocates worry can destroy a person's anonymity?
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RFID
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Digital communications describes a process in which two or more computers or devices transfer all of the following EXCEPT______
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Networks
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For best performance of communications channel, which of the following should be true?
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Bandwidth should be high and latency low
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For smaller business and home networks, which of the following allows multiple computers to share a single broadband Internet connection such as through a cable modem or DSL modem?
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Router
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How are standards such as EDI used by businesses?
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To define how data transmits across transmission media
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How many feet can the range of Bluetooth devices be extended with additional equipment?
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325
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How many wired and/or wireless computers and mobile devices might a router be able to connect?
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more than 200
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In reference to computer communications, what does the term noise mean?
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Electrical disturbances
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Many home users are connecting multiple computers and devices together into a system. What is the name for this system?
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Home network
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Microwave transmission involves sending signals from one microwave station to another. What is this often called?
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Fixed wireless
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Network servers and web servers are examples of what type of server?
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Dedicated servers
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The amount of data, instructions, and information that can travel over a communications channel sometimes is called which of the following?
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Bandwidth
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The design of computers, devices, and media in a network is categorized as either client/server or peer-to-peer. What is the term used to refer to this characterization?
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Network architecture
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What does EFT stand for?
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Electronic funds transfer
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What is a NIC
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A communications device that enables a computer or device that does not have built-in networking capability to access a network
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What is a receiving device?
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A device that accepts the transmission of data, instructions, or information
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What is a sending device?
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A device that initiates an instruction to transmit data, instructions or information
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What is another term for an internet peer-to-peer network?
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A file sharing network
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What is another term for servers that control access to the hardware, software, and other network resources?
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Host computers
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What is the approximate distance most Bluetooth devices can be from each other to communicate, without using additional equipment?
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33 feet
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What is the definition of protocol, as it applies to network?
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A standard that outlines characteristics of how two network devices communicate
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What is the maximum transfer transmission rate for Bluetooth
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24 Mbps
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What is the purpose of hubs and switches?
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To provide a central point for cables in a network
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What is the term for a communications device that connects multiple computers together and transmits data to its correct destination on a network?
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A router
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What is the term used to connect a device to a network that has an IP address?
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Node
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What kind of communications device sends and receives data and information to and from a digital line, such as ISDN and cable
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A modem
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What term describes the process in which two or more computers or devices transfer data, instructions, and information?
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Digital communications
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What term is used to describe the time it takes a signal to travel from one location to another on a network?
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latency
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What type of media transmits multiple signals simultaneously?
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Broadband
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which group developed the WiMAX
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IEEE
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Which is the best description of a coaxial cable?
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A single copper wire surrounded by at least three layers
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Which network type connects each computer and device to a central device?
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A star network
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Which of the following are radio waves that provide a high-speed signal transmission?
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Microwaves
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Which of the following best describes DSL connections?
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Transmits at fast speeds on existing standard copper telephone wiring; popular for small business or home user
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Which of the following can be avoided if a computer or mobile device has a motherboard that integrates networking capability?
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NIC
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Which of the following can detect problems-such as why traffic is flowing slowly-on networks that use the TCP/IP protocol?
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packet sniffer software
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Which of the following communications technologies does not use broadcast radio signals?
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IR
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Which of the following defines guidelines that specify the way computers access the medium to which they are attached, the type(s) of medium used, the speeds used on different types of networks, and the type(s) of physical cable and/or the wireless technology used?
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network standard
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Which of the following defines how a network uses close-range radio signals to communicate between two devices or objects equipped with this technology?
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NFC
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Which of the following did Sven Mattisson and Jaap Haartsen invent?
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Bluetooth
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Which of the folloiwng enables a computer device that odes not have built-in networking capability to access a network?
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NIC
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Which of the following has a port to which a cable connects in order to coordinate the transmission and receipt data, instructions, and information to and from the computer or device containing it?
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Network interface card
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Which of the following has the fastest maximum transfer transmission rate?
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UWB
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Which of the following has the fastest transfer rate?
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FTTP (w/o ATM)
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Which of the following has the fastest transfer rate?
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ATM (with FTTP)
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Which of the following is a 4G standard?
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LTE
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Which of the following is central communications device that allows computers and devices to transfer data wirelessly among themselves or to transfer data wirelssly to a wried network?
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Wireless access point
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Which of the following is a communications device that connects multiple computers together and transmits data to its correct destination on a network?
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Router
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Which of the following is a LAN that uses no physical wires?
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WLAN
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Which of the following is a network standard that specifies no central computer device on the network should control when data can be transmitted?
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Ethernet
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Which of the following is a simple, inexpensive network that typically connects fewer than 10 computers?
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Peer-to-peer network
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Which of the following is a transmission media on which data, instructions, or information travel?
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Communications channel
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Which of the following is a wireless transmission medium that distributes radio signals through the air over long distances?
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Broadcast radio
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Which of the following is an earth-based reflective dish that contains the antenna, transceivers, and other equipment necessary for microwave communications?
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microwave station
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Which of the following is not a technology used by hot spots?
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UWB
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Which of the following is not an applicaton of communicatoins satellite techonlogy
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Fixed wireless
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Which of the following is not an example of a dedicated line?
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Dial-up
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Which of the following is not true of communications software
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Email, FTP, and VolP are examples of system software for communications
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Which of the following is the data transfer rate equivalent to one million bits per second
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Mbps
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Which of the following is the greatest problem with regard to a bus network?
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The bus itself might become inoperable
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Which of the following is the least likely technology PANs would use?
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peer-to-peer
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Which of the following is the maximum transfer transmission rate for communications satellites?
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2.56 Tpbs
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Which of the following is true of broadcast radio with regard to physical transmission media?
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It is slower and more susceptible to noise
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Which of the following is true of DSL?
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It is a popular digital line alternative for the small business or home user
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Which of the following kinds of cable consists of a single copper wire surrounded by at least three layers:an insulating material, a woven or braided metal, and a plastic outer coating?
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coaxial
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Which of the following kinds of devices is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device?
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Communications
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Which of the following kinds of modems is a modem that sends and receives digital data over and information to and form a digital line?
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Broadband
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Which of the following offers an alternative to infrared communications with high bandwidth transmissions?
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Bluetooth
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Which of the following statements best describes a BAN
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A set of wearable or implanted body sensors that turns the body into a human router
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Which of the following statements best describes the Ethernet network standard?
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No central computer or device on the network should control when data can be transmitted
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Which of the following statements is not true of peer-to-peer networks?
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The network operating system is stored on a network server
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Which of the following statements is not true of Wi-Fi?
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Even if two products are Wi-Fi Certified, they must share the same platform in order to communicate
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Which of the following technologies is the new tollbooth on the local highway most likely to use?
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RFID
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Which of the following technologies is your new inventory tracking system at your small business most likely to use?
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UWB
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Which of the following technologies is your new mobile phone payment device most likely to use?
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NFC
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Which of the following technologies is your new remote control most likely to use?
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IrDA
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Which of the following technologies is your new wireless headset most likely to use?
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Bluetooth
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Which of the following terms identifies any network based on the 802.11 family of standards?
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Wi-Fi
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Which of the following terms is an electrical disturbance that can degrade communications?
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Noise
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Which of the following terms is the time it takes a signal to travel from one location to another on a network
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latency
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Which statement best describes how the RFID standard works?
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The network uses radio signals to communicate with a tag placed in or attached to an object, animal, or person.
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Who invented the Ethernet?
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Robert Metcalfe
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You are a technology expert and you have been asked to predict which technology will become the Internet standard for data transmission, replacing T3 lines. Which of the following are you most likely to predict?
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ATM
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You are purchasing a new mobile phone, and are learning about categories of cellular transmissions. You ask the sales person what the 'G' stands for in the categories 1G, 2G, 3G, and 4G. What does he reply?
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Generation
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You love to take pictures of your family. What standard do you use to print pictures directly from your camera?
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UWB
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You own a third-party business that provides networking services such as EDI, secure data and information transfer, storage, and email. Into what category of business does this business fall?
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Van
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You run a large network in which it is important to keep a duplicate of the central devices in case the primary one fails. What category of network topology does this network use?
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Star network
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You want to use the UMB cellular transmission standard on your new mobile phone. Which standard will you use?
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4G
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Your new smartphone has a port that enables the transfer of data from one device to another using infrared light waves. What kind of port is this?
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IrDA
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Your school computer library has a network that connects computers and devices within a few small rooms. What type of network does it likely use?
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LAN
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Your smartphone, digital camera, and printer are all part of a network in your workspace. What type of network is likely in use?
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PAN
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____ help users establish a connection to another computer, mobile device, or network.
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Communications software
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____ is provided by applications such as email, FTP, browser, discussion boards, chat rooms, Internet messaging, videoconferencing, and VoIP.
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Communications software
