#CCENT and #CCNA candidates need to be comfortable with VLSM. The previous post gave you a chance to exercise;  today’s post lets you check your answers to the first part of VLSM design [...]

For this final variation of a #CCNA Simlet question in this series, consider what happens when one OSPF neighbor changes its OSPF Hello interval. Based on what you expect to change, what show [...]

The boss of our #CCNA is at it again today with another VLSM project. The scenario helps you exercise your brain in a VLSM world. As with all the VLSM design drills, you are given an existing [...]

The #CCNA scenario begins with a working router triangle, using a single OSPF area. Then you shutdown a serial link. What changes with OSPF show command output? Show ip ospf neighbor? Show ip [...]

More VLSM work for #CCENT and #CCNA today! Today’s post is simple enough: this post wraps up the answer to the VLSM design drill posted earlier. Dive right in! Here’s the list of [...]

Time for some VLSM work for #CCENT and #CCNA today! Today’s post begins the analysis for the VLSM design drill posted earlier. The original post posed a scenario, with an existing subnet [...]

VLSM causes many #CCENT and #CCNA candidates much heartache. Today’s post shows a VLSM design exercise that is useful for exam prep as well as real life. The idea: begin with an existing [...]

OSPF fails – a little – on a #CCNA Sim question. What show command symptoms would you expect to see if the misconfiguration was that a WAN interface between two routers was shutdown? What if [...]

The last post set up a #CCNA troubleshooting drill. Today, we’ll walk through the analysis. What were your predictions? On which routers (R1, R2, and R3) do you expect to see a change to the [...]