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You have a single Class C IP address and a point-to-point serial link that you want to implement VLSM on. Which subnet mask is the most efficient for this point to point link?

单选题
2022-06-13 17:45
A、255.255.255.0
B、255.255.255.240
C、255.255.255.248
D、255.255.255.252
E、255.255.255.254
F、None of the above
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正确答案
D
试题解析
D 解析：Explanation:For a single point to point link, only 2 IP addresses are required, one for the serial interface of the router at each end. Therefore, the 255.255.255.252 subnet mask is often used for these types of links, as no IP addresses are wasted.
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