Networking第 48 / 100 题
What does a subnet mask define?
a.The speed of the network
b.The physical length of a cable
c.The color coding of network wires
d.Which portion of an IP address identifies the network versus the host
解析
A subnet mask divides an IP address into a network portion and a host portion. This lets devices determine whether a destination is on the local network or needs to be routed elsewhere. For example, 255.255.255.0 designates the first three octets as the network.
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