Binary Practice Problems
Figures 14-4 and 14-5 demonstrate a process to find the subnet ID using binary math. The following process summarizes those steps in written form for easier reference and practice:
Step 1. Convert the mask to prefix format to find the length of the prefix (/P) and the length of the host part (32 – P).
Step 2. Convert the IP address to its 32-bit binary equivalent.
Step 3. Copy the prefix bits of the IP address.
Step 4. Write down 0s for the host bits.
Step 5. Convert the resulting 32-bit number, 8 bits at a time, back to decimal.
The process to find the subnet broadcast address is exactly the same, except in Step 4, you ...
Get CCENT/CCNA ICND1 100-101 Official Cert Guide now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
