单项选择题
A.A
B.B
C.C
D.D
E.E
F.F
单项选择题 If an Ethernet port on a router was assigned an IP address of 172.1.1.1/20,what is the maximum number of host sallowed on this subnet?()
单项选择题 Why will a switch never learn a broadcast address?()
单项选择题 As witch is configured as a vtp sever with a domain name of CCNA.Which cisco ios privileged mode command,followed by a reload of the swith,will reset the VTP management domain name of the switch to a NULL value?()