CCIE系列認(rèn)證單項(xiàng)選擇題每日一練(2019.07.08)

來源：考試資料網(wǎng)

1 Which statement is correct about an OSPF sham-link？（）

2 Which mechanism do the CNA and the Cisco Nexus 5000 Series Switches use to provide a lossless class of Ethernet traffic？（）

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3 In which of the following lists of APS Action Requests is the priority correctly arranged from lowest tohighest？（）

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4 On a Cisco Nexus 7000 Series Switch， what is the purpose of this command？（）
switch# config terminal
switch（config）# mac address-table learning-mode conversational vlan 1-10
switch（config）#

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5 Which of these statements best describes the major difference between an IPv4-compatible tunnel and a 6to4 tunnel？（）

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