As usual, the “answers” post only makes sense after reading the “question” post. Use the question as a place to practice and ignore the speed and time pressure, or use it truly as a speed test. [...]

It’s time for the last #CCENT VLSM speed test for a while. Your job: any way you know how, derive the subnet IDs, and the range of addresses in each subnet, and then compare the subnets to [...]

The answer for Overlapping VLSM Subnets Speed Test 2 are below the fold! Here’s a complete list of related posts: Intro to overlapped subnet problems All Overlapped Subnet problems IPv4 [...]

Time for another practice problem to find any overlapping IPv4 subnets. I’ve kicked this one up a notch compared to the previous exercise – this time the list (below the fold) shows IP [...]

The answer for Overlapping VLSM Subnets Speed Test 1 are below the fold! Other posts in this series: Overlapping Subnets – the Problem VLSM subnet overlap problem 1

It’s subnetting Friday – #CCENT edition. Your job? Look at a set of 5 or 6 subnet/mask combos, and identify which ones overlap, and which ones do not. There may be no overlaps, or there may [...]

#CCENT and #CCNA testing, as well as real-life network engineering, requires that we find configuration and design errors in the network. Problems can occur when the design and configuration of [...]