多选题Which of the following are true regarding a network using a subnet mask of 255.255.248.0?（）AIt corresponds to a Class A address with 13 bits borrowed.BIt corresponds to a Class B address with 4 bits borrowed.CThe network address of the last subnet will have 248 in the 3rd octet.DThe first 21 bits make the host portion of the address.EThis subnet mask allows for 16 total subnets to be created.FThe subnetwork numbers will be in multiples of 8.
多选题
Which of the following are true regarding a network using a subnet mask of 255.255.248.0?（）
A
It corresponds to a Class A address with 13 bits borrowed.
B
It corresponds to a Class B address with 4 bits borrowed.
C
The network address of the last subnet will have 248 in the 3rd octet.
D
The first 21 bits make the host portion of the address.
E
This subnet mask allows for 16 total subnets to be created.
F
The subnetwork numbers will be in multiples of 8.
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