This appendix begins with ten mask conversion problems, followed by the matching answers and explanations. After that, the appendix lists ten mask analysis problems, with the matching answers to follow.
The problems in this appendix require you to convert dotted-decimal subnet masks to prefix format and vice versa. To do so, feel free to use the processes described in Chapter 13 of Cisco CCENT/CCNA ICND1 100-101 Official Cert Guide.
Many people use the information in Table E-1 when converting masks. The table lists the nine dotted-decimal notation (DDN) mask values, the binary equivalent, and the number of binary 1s in the binary equivalent.