(原题)QUESTION 74
A national retail chain needs to design an IP addressing scheme to support a nationwide network. The
company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet.
Working with only one Class B address, which of the following subnet masks will support an appropriate
addressing scheme? (Choose two.)
A. 255.255.255.0
B. 255.255.255.128
C. 255.255.252.0
D. 255.255.255.224
E. 255.255.255.192
F. 255.255.248.0
Answer: BE
Section: Chapter 3: IP Addressing and VLSM
Explanation/Reference:
需要至少300个子网,每个子网至少50台主机。使用一个B类地址来划分。
A:最多有256个子网,错误 C:只有64个子网
D:每个子网只有30个可用IP
F:只有32个子网。