A network administrator assigns the IPv4 prefix 192.168.10.0/29 to a small network segment… — CompTIA Network+

A network administrator assigns the IPv4 prefix $192.168.10.0/29$ to a small network segment. Which of the following statements regarding this subnet are correct? (Select TWO)

The subnet mask in dotted-decimal notation is 255.255.255.248.Answer
The network provides a total of 6 usable IP addresses for host devices.Answer
C
The network provides a total of 8 usable IP addresses for host devices.
D
The broadcast address for this subnet segment is 192.168.10.8.

Answer

The subnet mask is 255.255.255.248 and the network provides a total of 6 usable IP addresses for host devices.

For a /29 subnet, there are 3 host bits remaining (

32 - 29 = 3

). The subnet mask corresponds to 255.255.255.248. The total number of IP addresses in the block is

2^3 = 8

. Subtracting the network identifier (192.168.10.0) and the broadcast address (192.168.10.7) leaves 6 usable IP addresses for hosts.

Step-by-Step Solution

Calculate the subnet mask from CIDR notation /29.

The subnet mask has 29 network bits and 3 host bits. In dotted-decimal form, 255.255.255.248.

Converting /29 to binary gives 11111111.11111111.11111111.11111000, which equals 255.255.255.248.

Calculate total IP addresses and usable host addresses.

Total addresses =

2^3 = 8

. Usable host addresses =

8 - 2 = 6

The network ID (192.168.10.0) and broadcast address (192.168.10.7) cannot be assigned to hosts.

Key Concept

IPv4 Subnetting and Usable Host Calculation

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