How many usable networks and hosts can be created using a 192.168.2.1/26 subnet?

 How many usable networks and hosts can be created using a 192.168.2.1/26 subnet?

• 4 Networks and 62 hosts
• 4 Networks and 64 Hosts
• 4 Hosts and 64 Networks
• 4 Networks and 192 Hosts      

EXPLANATION

a /26 CIDR in a class C network will provide 4 Networks and 62 usable hosts. This is calculated by the number of bits borrowed to create the network, in this case its 2 bits borrowed to create the Networks multiplied by the power of 2, 2^2=4 and the number of bits remaining for the hosts,  in the last octet 2^6 =64. 

Since you need to subtract 2 for the network and broad cast, it would be 64-2=62

2^(h-2) 

The Subnet mask would be 255.255.255.192 

In binary it would be , note that there are 8 bits in each Octet and borrowed 2bits, 8+8+8+2= 192

11111111.11111111.11111111.11000000

SinceSince

SOURCE

https://www.chabotcollege.edu/faculty/netacad/prot/sem1/study_sheets/detIPadd.htm