“Your school’s network has outgrown its designated telco rooms, so you decide to housea few routers in an old janitor’s closet temporarily. However, because the closet has no power outlets, you will have to supply the routers power over the network. If you’re lucky, your LAN already uses which of the following Ethernet standards that will allow you to do that?”

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“You are part of a team of engineers who work for an ISP that connects large data centers, telephone companies, and their customers throughout California and Oregon. Management has decided that the company can make large profits by promising the utmost QoS to certain high-profile customers. Which of the following switching methods will best guarantee the promised QoS?”

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