CCIE系列認證CCIE(350-001)單項選擇題每日一練(2019.04.26)

來源：考試資料網(wǎng)

1 What is the purpose of the STP PortFast BPDU guard feature？（）

2 Which command is used to enable SSM with the range 232.0.0.0 - 255.0.0.0？（）

3 What is also called Type 0 authentication in OSPF on Cisco Routers？（）

4 To troubleshoot network issues more accurately， milliseconds should be included in the syslog of the router.Which command will achieve this？（）

5 Which multicast address is reserved for cisco-rp-discovery？（）