Exam 4: Networks

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Networks enable which of the following applications?

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A _____________ portal supports communities such as hobby groups or political parties.

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Metasearch engines search several engines at once and integrate the findings of the various search engines.

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Industry-wide portals are intended for broad audiences and offer fairly routine content.

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LANs typically contain multiple WANs.

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Which data transmission technology requires fiber-optic cable, can transmit up to 2.5 gigabits per second, and is more expensive than DSL?

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With Voice-over-IP, every call opens up a dedicated circuit for the duration of the call.

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_____ are hardware devices that support data transmission and reception across a telecommunications system.

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Wide-area networks have a large capacity, and they typically use a single communications channel.

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Which transmission technology is an interface standard for transporting digital signals over fiber-optic lines that enables the integration of transmissions from multiple vendors?

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Twisted-pair wire is the least-used form of communications wiring.

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The _______________ layer of TCP/IP provides the addressing, routing, and packaging of data packets.

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A ______________ offers limited accessibility inside the organization.

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Gal runs a music store.He has a desktop computer in the back room that acts as a server.He has a point-of-sale terminal that connects to the desktop.He also has a notebook (using in-store wireless access to the Internet)that can be carried around the store to look up current items in stock, or to search for items from one of his suppliers for special orders.Which type of network application is being used when a salesperson is looking up items in stock?

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The World Wide Web is synonymous with the Internet.

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Peer-to-peer processing means each computer acts as both a client and a server.

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The cable medium with the highest bandwidth is:

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Uniform resource locators (URLs)point to the address of a specific resource or site on the Web.

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Which of the following is an advantage of coaxial cable?

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_____ refers to the range of frequencies available in any communications channel.

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