多项选择题
A. Replace the straight-through cable with a crossover cable.
B. Change the subnet mask of the hosts to /25.
C. Change the subnet mask of the hosts to /26.
D. Change the address of Workstation A to 192.0.2.15.
E. Change the address of Workstation B to 192.0.2.111.
多项选择题 Which two addresses can be assigned to a host with a subnet mask of 255.255.254.0？（）
单项选择题 The network default gateway applying to a host by DHCP is 192.168.5.33/28.Which option is the valid IP address of this host？（）
单项选择题 Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports FA0/13.An 802.1Q trunk is configured between the two switches.On CAT1，VLAN10 is chosen as native，but on CAT2 the native VLAN is not specified.What will happen in this scenario？（）