If Paula uses a subnet mask of 255.255.255.128, how many addresses will each subnet have?

To determine how many addresses are available in each subnet with a mask of 255.255.255.128, it's important to analyze the subnet mask in binary form. The subnet mask 255.255.255.128 can be represented in binary as:

• 255: 11111111

• 255: 11111111

• 255: 11111111

• 128: 10000000

In the subnet mask, the first 25 bits (the 1's) are used for the network portion, and the last 7 bits (the 0's) are used for the host portion of the address.

The number of addresses available for hosts in each subnet can be calculated using the formula 2^n, where n is the number of bits available for host addressing. In this case, n is 7 because there are 7 bits available for host addresses.

So, 2^7 equals 128. However, in every subnet, two addresses are reserved: one for the network address and one for the broadcast address. Therefore, the actual usable addresses for hosts would be 128 - 2 = 126.

Despite this, the question specifically asks how many addresses