N10-004單項(xiàng)選擇題每日一練(2019.01.10)

來(lái)源：考試資料網(wǎng)

1 Which of the following WAN protocols is a circuit switching technology?（）

2 In an enterprise setting, access switches providing network connectivity placed throughout abuilding are typically connected to a backbone called the:（）

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3 Users report an intermittent degradation of sound on their IP phones. Which of the following woulda network administrator do to alleviate the problem?（）

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4 A network technician is troubleshooting a network issue that has just been reported. Which of thefollowing troubleshooting steps should the technician take FIRST to help resolve this issue?（）

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5 Which of the following OSI model layers is used for logical addressing?（）

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