单项选择题
Refer to the exhibit.Which is the most efficient summarization that R1 can use to advertise its networks toR2？（）
A.172.1.4.0/22 B.172.1.0.0/21 C.172.1.0.0/22 D.172.1.4.0/25 172.1.4.128/25 172.1.5.0/24 172.1.6.0/24 172.1.7.0/24 E.172.1.4.0/24 172.1.5.0/24 172.1.6.0/24 172.1.7.0/24
多项选择题 Which two statements are true about the command ip route 172.16.3.0 255.255.255.0 192.168.2.4?（）
多项选择题 What are two benefits of using VTP in a switching environment?（）
多项选择题 Which two are advantages of static routing when compared to dynamic routing?（）
