Today I’m changing gears a bit and moving back to exam content rather than exam strategies – while always keeping in mind the average 1:10 or so for the average exam question. We had a great response on last week’s survey, where lots of people answered as to how long it took them to answer the question. So, I’ll try another survey with this question, again so we can all get a general idea of the time taken – at least for the group that’s watching this space.
By the way, last Wednesday’s survey for last week’s subnetting question has 57 votes as of this morning, with roughly 1/3 (20 votes) getting into the 90+ seconds category, and 7% (4) getting the answer in less than 15 seconds.
This week’s question is a good example of how you can answer very quickly if you have a firm understanding of the underlying concepts. However, if you’ve just memorized the definition, but not thought about how it really works, this question can give you a bit of heartburn. It should be interesting to see the results. Here’s the survey, up at the top of the blog in part to protect you from seeing the figure used with the question until you have a chance to start your timer, if you want to play along.
OK, start your timer when you start reading the question, and stop the timer when you’ve picked your answer(s) by letter.
Question: In the figure, routers B, C and D have all learned a route to subnet 1 using EIGRP, with their locally-calculated metrics as shown. Router A learns about a route to subnet 1 from B, C, and D. Which of the following answers are true regarding A’s IP routing table, as listed in the output of the show ip route command, assuming default settings on router A for both the variance and maximum-paths EIGRP configuration commands?
A) If show ip route lists [90/12000] in the one listed route for subnet 1, then A will need to send an EIGRP query if this route fails.show ip route lists [90/14000] in the one listed route for subnet 1, then A will need to send an EIGRP query if this route fails.show ip route command on A could not possibly list more than 1 route for subnet 1.show ip route command on A could not possibly list the route through D unless at least one of the other two possible routes has failed.
B) If
C) The
D) The
E) None of the other answers are true.
Tomorrow I’ll post some comments about the answer, as well as some exam-taking strategies for questions like this one.
