How many host IDs does a /20 network support?
A)1,048,574 (2²⁰ - 2)
B)65,536 (2¹⁶)
C)4094 (2¹² - 2)
D)64 (2⁶)

Name: How many host IDs does a /20 network support? A)1,048,574 (2²⁰ - 2) B)65,536 (2¹⁶) C)4094 (2¹² - 2) D)64 (2⁶)
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Question

Quizplus · Accepted Answer

A /20 network has 12 bits for host IDs (32 total bits - 20 bits for the network = 12 bits for hosts), so it supports 2¹² - 2 = 4094 hosts (subtracting 2 for the network and broadcast addresses).

How Many Host IDs Does a /20 Network Support