单项选择题
In BGP graceful restart, how does a peer router indicate the end of a route exchange?（）
A. an open message with the E bit set B. an update message with the E bit set C. an open message with an end-of-RIB marker D. an update message with an end-of-RIB marker
多项选择题 Firewall filters can perform which two actions?（）
单项选择题 What is the function of the helper router during a restart event in OSPF?（）
单项选择题 In JUNOS software, which would prevent an OSPF router from importing the 10.0.0.4/30 summaryroute?（）
