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Zorluk: KolayPrivate IPv4 Addressing and RFC 1918

A network administrator is configuring an internal host interface and must assign an IP address within the RFC 1918 Class B private address space. Which of the following IP addresses is a valid RFC 1918 private IPv4 address?

  1. 172.20.50.1Cevap
  2. B
    172.32.1.10
  3. C
    192.169.100.1
  4. D
    11.10.0.1

Cevap

172.20.50.1
The address 172.20.50.1 is a valid RFC 1918 private IPv4 address because it falls within the 172.16.0.0/12 block, which ranges from 172.16.0.0 to 172.31.255.255.

Adım Adım Çözüm

1
Identify the RFC 1918 Class B private address boundaries
RFC 1918 defines Class B private space as 172.16.0.0 through 172.31.255.255 (/12 prefix).
Understanding RFC 1918 ranges is essential for properly distinguishing private non-routable internal addresses from globally routable public addresses.
2
Evaluate the candidate addresses against the RFC 1918 boundaries
The address 172.20.50.1 falls between 172.16.0.0 and 172.31.255.255. The other addresses (172.32.1.10, 192.169.100.1, 11.10.0.1) fall outside RFC 1918 ranges.
Only addresses within the designated RFC 1918 ranges are non-routable on the public Internet and reserved for private network deployment.

Anahtar Kavram

Private IPv4 Address Ranges (RFC 1918)
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Private IPv4 Addressing and RFC 1918

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