單項(xiàng)選擇題Which one of the following is the most commonly used layer 2 network device?()

A. Hub
B. Bridge
C. Switch
D. Router
E. Repeaters
F. None of the above


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1.多項(xiàng)選擇題In the OSI model, at which layers do WANs operate at?()

A.Applicationlayer
B.Presentationlayer
C.Sessionlayer
D.Transportlayer
E.Networklayer
F.Datalinklayer
G.Physicallayer

2.單項(xiàng)選擇題At which layer of the OSI model is the optimal path to a network destination determined at?()

A. Data Link
B. Session
C. Physical
D. Presentation
E. Network
F. Transport

3.多項(xiàng)選擇題In the communications industry, what are the features and benefits of using the layered OSI model?()

A. It encourages industry standardization by defining what functions occur at each layer of the model.
B. It necessitates changes in functionality in one layer to other layers.
C. It enables equipment efficiency from different vendors to use the same electronic components.
D. It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.
E. It supports the evolution of multiple competing standards, and thus enhances business equipment manufacturing opportunities.

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Which of the following correctly describe steps in the OSI data encapsulation process?()

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Which characteristics are representative of a link-state routing protocol?()

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Five minutes after issuing the show running-config command, a technician enters the command again and notices that several access list statements have been altered. Because of this, the technician believes that the router is being configured by an unknown person through Telnet. Before changing the router passwords, the technician would like to discover if anyone is connected to the router by Telnet and stop them from making further changes.Which commands will accomplish these options?()

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New switches have been purchased for a network upgrade. The objective for the network design emphasizes efficient, error-free transport instead of fast transport.Which switching mode should be configured on the new switches to provide error-free transport to the network? ()

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What feature of a networks switch allows an administrative to create separate broadcast domains?()

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All WAN links is side the TestKing.com network use PPP with for authentication security. Which command will display the CHAP authentication process as it occurs between two routers in the network?()

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