Question

Beth would like to run an nmap scan against all of the systems on her organization's private network. These include systems in the 10.0.0.0 private address space. She would like to scan this entire private address space because she is not certain what subnets are used. What network address should Beth specify as the target of her scan?

A. 10.0.0.0/0.
B. 10.0.0.0/8.
C. 10.0.0.0/16.
D. 10.0.0.0/24.

Answer 1

B. 10.0.0.0/8.

Step-by-step explanation:

Using an 8-bit subnet mask ensures the network address is represented by the first octet of the IP address and is very efficient.

The suffix /8 implies that Beth checks all devices in the 10.0.0.0 network (hosts between 10.0.0.0 and 10.255.255.255).