Exam 6: Data Communications

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Public switched data network is a network of computers and leased lines that is developed and maintained by a vendor.

(True/False)
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Each NIC has a worldwide,unique identifier,called ________.

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One of the most common optical connectors is a(n)________ connector.

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DSL modems use their own protocols for data transmission.

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Most personal computers today are equipped with an onboard NIC that supports what is called 10/100/1000 Ethernet.

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Which of the following is an access device that connects each site to the transmission lines?

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Narrowband transmission speeds typically do not exceed 56 kbps.

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IEEE 8022.3 is also known as Ethernet.

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_____ firewalls are the simplest type of firewall.

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Layered protocol is an elaborate scheme to provide seamless flow of data in networks like the Internet.

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All of the following are advantages of using a PSDN except ________.

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Cable modems and DSL modems use the same protocols.

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If you see https instead of http in the address bar of your browser you are using ________.

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Private networks of networks are called ________.

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The most popular protocol for LANs is the IEEE 802.11 protocol.

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What are symmetric and asymmetric encryptions?

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Frame relay and ATM are the protocols used for ________ networks.

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What is a VPN? Describe one way it uses to connect between two points?

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Which of the following is true of the protocols used by PSDN?

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A perimeter firewall examines the source address,the destination address(es),and other data to determine whether to let that part pass.

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