Examkin

Soru

Zorluk: KolayIPv4 Addressing and Subnetting

A network technician is configuring a dedicated point-to-point wireless link between two enterprise buildings using the IPv4 subnet 192.168.10.16/28192.168.10.16/28. What is the maximum number of usable host IPv4 addresses available for assignment to physical network interfaces in this subnet?

Cevap: 14 hosts

Cevap

The maximum number of usable host IPv4 addresses in a /28/28 subnet is 14.
For a /28/28 subnet, there are 4 host bits (32−28=432 - 28 = 4). Calculating total IP addresses yields 24=162^4 = 16. Subtracting 2 reserved addresses (one network address and one broadcast address) leaves 14 usable host IPv4 addresses.

Adım Adım Çözüm

1
Calculate the number of host bits available from the CIDR prefix
4 host bits (32−28=432 - 28 = 4)
An IPv4 address contains 32 bits in total, so subtracting the prefix length gives the remaining bits allocated for host addresses.
2
Calculate the total number of IP addresses in the subnet
16 total IP addresses (24=162^4 = 16)
The number of total IP combinations for nn host bits is 2n2^n.
3
Calculate the usable host address count by excluding reserved addresses
14 usable host IPv4 addresses (16−2=1416 - 2 = 14)
The first IP address in the range is reserved as the network address, and the final IP address is reserved as the directed broadcast address.

Anahtar Kavram

Calculating Usable Host Addresses in an IPv4 Subnet
Bu soruyu puanla

Konular

IPv4 Addressing and Subnetting

Bu konudan daha fazla soru