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| 1 | |
Which is true concerning industry trends in the telecommunications field? |
| | A) | The industry continues to have fewer vendors because of regulations. |
| | B) | The industry has changed from government-regulated monopolies to a deregulated market with fierce competition. |
| | C) | The extensive use of the Internet has reduced the need for products, services, and providers. |
| | D) | All of the choices are correct. |
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| 2 | |
Communications networks can help a company: |
| | A) | Overcome geographic barriers by transmitting customer orders from traveling sales reps to corporate data center. |
| | B) | Overcome time barriers by transmitting customer orders from sales reps to corporate data center. |
| | C) | Overcome cost barriers by providing credit authorization in seconds. |
| | D) | None of the choices are correct. |
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| 3 | |
Using extranets can help a company gain competitive advantages in: |
| | A) | Product development. |
| | B) | Marketing. |
| | C) | Distribution. |
| | D) | All of the choices are correct. |
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| 4 | |
Local area networks: |
| | A) | May be referred to as a metropolitan area network if they cover a large city or metropolitan area. |
| | B) | Are used by many multinational companies to transmit information to their customers and suppliers across cities and countries. |
| | C) | Connect computers and other information processing devices within a limited physical area such as a building or a manufacturing site. |
| | D) | Require only three things: computers, telecommunications processors, and data to transmit. |
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| 5 | |
A client/server network: |
| | A) | Has clients that provide functions such as application control and shared computation. |
| | B) | Uses client computers to provide copies of software to the server to allow server processing. |
| | C) | Provides a company with the capability to downsize from larger computer systems and move away from legacy systems. |
| | D) | Has server computers that perform all processing; clients are "dumb" input/output devices only. |
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| 6 | |
In a ____________ network, when you request a file, a central server can search a directory for any other users who have that file and are online; when you receive the list of those users, you can click on one name to prompt the software to connect your PC to their PC and automatically transfer the file you want from their hard drive to yours. |
| | A) | Ring. |
| | B) | Bus. |
| | C) | Star. |
| | D) | Peer-to-peer. |
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| 7 | |
According to your text, wireless networks: |
| | A) | Are growing rapidly as new high-speed technologies are implemented. |
| | B) | May save a company from a difficult and costly task of rewiring an older building for network access. |
| | C) | Enable laptop PCs, PDAs, and other devices with WI-Fi modems to easily connect to the Internet. |
| | D) | All of the choices are correct. |
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| 8 | |
The OSI communication network architecture has seven layers. The "lower" layers: |
| | A) | Are used whenever a message passes from or to a user. |
| | B) | Are used when any message passes through the host computer. |
| | C) | Includes the session and presentation layers. |
| | D) | Includes the application layer. |
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| 9 | |
A gateway is an inter-network processor. As such, a gateway is used to: |
| | A) | Provide port-switching communications for shared access to a network's resources. |
| | B) | Interconnect networks that use different communications architectures. |
| | C) | Make connections between circuits in a single network. |
| | D) | None of the choices are correct. |
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| 10 | |
Broadband communications channels: |
| | A) | Move data more slowly than narrow-band. |
| | B) | Move data more rapidly than narrow-band. |
| | C) | Move data at the same rate as narrow-band. |
| | D) | Are only available in local area networks. |
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