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  3. From where does a small network typically get its IP network addresses or IP block?

From where does a small network typically get its IP network addresses or IP block?

admin2009-05-19  25
问题 From where does a small network typically get its IP network addresses or IP block?
选项 A、From the Internet Domain Name Registry (IDNR)
B、From the Internet Assigned Numbers Authority (IANA)
C、From the Internet Service Provider (ISP)
D、From the Internet Architecture Board (IAB)
E、None of the above
答案C
解析 Explanation:
Normally a small network will be assigned a number of IP addresses from their ISP, or in some cases, such as DSL and cable modem, a single dynamic IP address will be assigned by the ISP. Only very large networks requiring a large IP block (normally more than a /20) will register with IANA, RIPE, or ARIN (American Registry of Internet Numbers) to obtain their IP addresses.
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