12
126
Subnetting divides a larger network into smaller, manageable sub-networks by borrowing bits from the host portion of an IP address to create additional network addresses. From a binary perspective, this involves manipulating the bits of the IP address to define the subnet mask, which specifies how many bits are used for the network versus the host. This process enhances routing efficiency, limits broadcast traffic, and allows for better utilization of IP addresses within a given network. Ultimately, subnetting helps in organizing and securing network architecture.
As we are using a class B network for the Subnetting and we have to make a total of at least 130 subnetworks...so, class B default subnet mask is 255.255.0.0 or 16 bits for networkingand we have to make 130 sunets. so it will come under the block size of 256 or we need 8 bits more to make 130 subnets.so our answer is 16+8=24ie, we will use subnet mask of 255.255.255.0 for this class B address.
254
32 bits in a IPv4 address
You need 20 bits of address bus to address 1 Mb of memory.
How many bits are there in a data link layer ethernet address?
a TcP IPv4 ip address has 32 bits.
It takes 10 bits.
There are 16 bits in a port address, which gives a port range of 0 - 65535
IPv4 => 32 bits => 4 bytes
3 bits