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31 Days Before Your CCENT Certification Exam: A Day-By-Day Review Guide for the ICND1 (100-101) Certification Exam, Second Edition by Allan Johnson

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Day 23. IPv4 Subnetting and VLSM

CCENT 100-101 ICND1 Exam Topics

Image Identify the appropriate IPv4 addressing scheme using VLSM and summarization to satisfy addressing requirements in a LAN/WAN environment.

Key Topics

By now, you should be able to subnet very quickly. For example, you should be able to quickly answer a question such as If you are given a /16 network, what subnet mask would you use that would maximize the total number of subnets while still providing enough addresses for the largest subnet with 500 hosts? The answer would be 255.255.254.0, or /23. This would give you 128 subnets with 510 usable hosts per subnet. You should be able ...

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