A classful class B network has a network range of 128 - 191. For host addresses, anything that is legal for an IP address in the last 2 octets would be a valid host address for a class B with no subnets.
To determine if 190.254.1.64 is a valid host for the network ID of 190.254.0.0 with 11 bits for subnetting, we first need to calculate the subnet mask. With 11 bits for subnetting, the subnet mask is 255.255.255.224 (or /27), which allows for 32 addresses per subnet (30 usable hosts). The network ID 190.254.0.0 with this mask has valid host addresses ranging from 190.254.0.1 to 190.254.0.30, so 190.254.1.64 is not a valid host in this subnet.
256
65,534
If you aren't subnetting, then the host range for this network would be: 190.254.0.0 - 190.254.255.255 The above shows the IP address range, but not all addresses would be usable (mostly the first and the last addresses would probably be not assignable to a device).
Class C IP addresses range from 192.0.0.0 to 223.255.255.255. However, the first address in each subnet is reserved as the network address, and the last address is reserved for the broadcast address. Therefore, valid Class C addresses that can be assigned to hosts typically range from 192.0.0.1 to 223.255.255.254, excluding the network and broadcast addresses within any specific subnet.
190.254.1.29
"The RFC 1918 private network numbers are 10.0.0.0, Class Bs between 172.16.0.0 and 172.31.0.0 inclusive, and all Class C networks that begin with 192.168. All addresses that begin with 127 are reserved, but not as valid private IP addresses."
No, because the range for class C addresses is 192 - 223, and the first octet of the address 191.76.43.10 is a class B address.
No, 255.255.0.255 is not a valid Class A address. In fact, it is a broadcast address used in Class B networks. Class A addresses range from 1.0.0.0 to 126.255.255.255, and the highest address in this range is 126.255.255.255. Additionally, the address 255.255.255.255 is reserved for the limited broadcast address, not for any specific class.
There are 2^24 host in class A but (2^24)-2 hosts are valid since the first and last address are reserved .
It is unlikely that you will find the IP address 192.168.250.10 on the internet because the .10 represents the number of host connected to an individual network. Also, IEEE recommends that the following IP addresses be used for private networks: 10.0.0.0 through 10.255.255.255 Class A 172.16.0.0 through 172.31.255.255 Class B 192.168.0.0 through 192.168.255.255 Class C
You can use up to 254 devices in this case.