Mask Conversion Problems
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.
Table E-1 Nine Possible Values in One Octet of a Subnet Mask
Convert each DDN mask to prefix format and vice versa:
1. 255.240.0.0
2. 255.255.192.0
3. 255.255.255.224
4. 255.254.0.0. ...
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