A. 10mm B. 15mm C. 20mm D. 25mm
A. ip address 1.1.1.1 netmask 255.0.0.0 B. ip address 1.1.1.1/24 C. set ip address 1.1.1.1 subnetmask24 D. ip address 1.1.1.1255.255.255.248
A. 正确 B. 错误