Term
| 68) ________ is a computer networking model in which multiple types of computers are networked together to share data and services. |
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| 69) A(n) ________ is a computer network that spans a relatively small area, allowing all computer users to connect with each other to share data and peripheral devices, such as printers. |
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| 70) A(n) ________ is a wide area network connecting disparate networks of a single organization into a single network. |
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| 71) ________ are private, third-party-managed medium-speed WANs that are shared by multiple organizations. |
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| 72) A(n) ________ is an emerging technology that uses wireless communication to exchange data between computing devices using short-range radio communication, typically within an area of 10 meters. |
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| 73) ________ are network services that include the storing, accessing, and delivering of text, binary, graphic, and digitized video and audio data across a network. |
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| 74) The high-speed central networks to which many smaller networks can be connected are known as ________. |
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| 75) Which of the following wireless communication technologies uses high-frequency light waves to transmit data on an unobstructed path between nodes—computers or some other device such as a printer—on a network at a distance of up to 24.4 meters? |
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Definition
| D) infrared line of sight |
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Term
| WLANs based on a family of standards called 802.11 are also referred to as ________. |
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Definition
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Term
| 77) Which of the following is a characteristic of terrestrial microwave communication? |
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Definition
| D) high susceptibility to eavesdropping |
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Term
| 78) ________ is the set of rules that governs how a given node or workstation gains access to the network to send or receive data. |
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Definition
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Term
| 79) ________ is a commonly used method of random access control, in which each workstation "listens" to traffic on the transmission medium (either wired or wireless) to determine whether a message is being transmitted. |
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Definition
| B) Carrier sense multiple access |
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Term
| 80) In a(n) ________ network all nodes or workstations are connected to a central hub, or concentrator, through which all messages pass. |
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| 81) Which of the following network topologies is capable of covering the largest distance? |
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| 82) Which of the following statements is true of a bus network topology? |
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Definition
| C) A bus network topology enables all network nodes to receive the same message through the network cable at the same time. |
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| 83) As per the Open Systems Interconnection (OSI) model, which of the following layers defines the way data is formatted, converted, and encoded? |
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Definition
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| 84) According to the OSI model, the ________ layer defines the protocols for structuring messages. |
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| 85) According tot he OSI model, the physical layer defines ________. |
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Definition
| C) the mechanism for communicating with the transmission media and interface hardware |
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| 86) A ________ is a device that converts digital signals from a computer into analog signals so that telephone lines may be used as a transmission medium to send and receive electronic data. |
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Definition
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Term
| 87) A ________ is a PC expansion board that plugs into a computer so that it can be connected to a network. |
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Definition
| D) network interface card |
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Term
| 88) A(n) ________ is a piece of networking hardware that manages multiple access points and can be used to manage transmission power and channel allocation to establish desired coverage throughout a building and minimize interference between individual access points. |
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Definition
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| 89) Which of the following entities is responsible for managing global and country code top-level domains, as well as global IP number space assignments? |
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Definition
| C) Internet Assigned Numbers Authority (IANA) |
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Term
| 90) Which of the following Internet connectivity technologies enables data to be sent over existing copper telephone lines by sending digital pulses in the high-frequency area of telephone wires? |
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Definition
| B) digital subscriber line technology |
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Term
| 91) Computers working as servers on the Internet are known as ________. |
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| 92) A(n) ________ is a unique identifier that should be created and used when designing a database for each type of entity, in order to store and retrieve data accurately. |
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Definition
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Term
| 93) In which of the following database models does the DBMS view and present entities as two-dimensional tables, with records as rows, and attributes as columns? |
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Definition
| A) relational database model |
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Term
| 94) ________ is a technique to make complex databases more efficient and more easily handled by the DBMS. |
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