多项选择题
Which routing protocols will support the following IP addressing scheme? （） Network 1 - 192.168.10.0 /26 Network 2 - 192.168.10.64 /27 Network 3 - 192.168.10.96 /27 Network 4 - 192.168.10.128 /30 Network 5 - 192.168.10.132 /30
A.RIP version 1 B.RIP version 2 C.IGRP D.EIGRP E.OSPF
单项选择题 Acknowledgements, sequencing, and flow control are characteristics of which OSI layer（）。
单项选择题 When a new trunk link is configured on an IOS based switch, which VLANs are allowed over the link（）。
单项选择题 What is one benefit of PVST+?（）
