JN0-304單項選擇題每日一練(2019.01.16)

來源：考試資料網(wǎng)

1 What defines a BGP confederation?（）

2 What is the function of the helper router during a restart event in OSPF?（）

3 PE1 has connections to VPN sites that are served by three remote PE routers. How many LSPs must be established to support 2547bis?（）

4 In IS-IS, how long will the restart helper keep the restarting router in the up state?（）

5 What is the purpose of IS-IS level boundaries?（）