Match each RFC 1918 private IPv4 address range to its defined default CIDR block and maxim… — Cisco CCNA

Match each RFC 1918 private IPv4 address range to its defined default CIDR block and maximum number of usable host addresses.

10.0.0.0 to 10.255.255.255/8 CIDR block ( $16,777,214$ usable hosts)
172.16.0.0 to 172.31.255.255/12 CIDR block ( $1,048,574$ usable hosts)
192.168.0.0 to 192.168.255.255/16 CIDR block ( $65,534$ usable hosts)

Cevap

10.0.0.0 to 10.255.255.255 matches the /8 CIDR block (

16,777,214

usable hosts); 172.16.0.0 to 172.31.255.255 matches the /12 CIDR block (

1,048,574

usable hosts); 192.168.0.0 to 192.168.255.255 matches the /16 CIDR block (

65,534

usable hosts).

Under RFC 1918, the three private IPv4 address allocations have distinct prefix masks and sizes: 10.0.0.0/8 provides a single large block with 24 host bits (

16,777,214

usable hosts); 172.16.0.0/12 encompasses 16 Class B ranges spanning 172.16.0.0 through 172.31.255.255 with 20 host bits (

1,048,574

usable hosts); and 192.168.0.0/16 encompasses 256 Class C ranges spanning 192.168.0.0 through 192.168.255.255 with 16 host bits (

65,534

usable hosts).

Adım Adım Çözüm

Analyze the 10.0.0.0/8 Class A private block

The range 10.0.0.0 to 10.255.255.255 reserves 24 host bits (

32 - 8 = 24

Calculating usable host count yields

2^{24} - 2 = 16,777,214

addresses.

Analyze the 172.16.0.0/12 Class B private block

The range 172.16.0.0 to 172.31.255.255 spans from second octet 16 to 31, reserving 20 host bits (

32 - 12 = 20

Calculating usable host count yields

2^{20} - 2 = 1,048,574

addresses.

Analyze the 192.168.0.0/16 Class C private block

The range 192.168.0.0 to 192.168.255.255 reserves 16 host bits (

32 - 16 = 16

Calculating usable host count yields

2^{16} - 2 = 65,534

addresses.

Anahtar Kavram

RFC 1918 Private IPv4 Address Allocation and CIDR Prefix Boundaries

Soru

Cevap

Adım Adım Çözüm

Anahtar Kavram

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