May
15
When preparing for any Network Certification Exam, one of the first topics that you’ll learn about are Access Control Lists (ACLs). Every document or Certification-related book I’ve ever read introduces students to ACLs from the perspective of IPv4 Access-Lists. Sometimes MAC Access-Lists are also mentioned briefly, but only to let the reader know they exist as another type of ACL. Rarely are any details given about how MAC ACLs actually work, or what their significant limitations are. Read More
Nov
05
Answers for Part II So the answers to the exciting tasks at hand.... There was a good amount of activity surrounding answers submitted for the contest!  It was good to see that many people interested in them!  Now, it's time to go through the answers and stretch the imagination a bit!  Be prepared for some stretching as well! One quick thing to point out before we get started, there was a question asked about why /24 routes won't have a ".255" as the fourth octet.  This really depends on how we... Read More
Nov
03
I know, I know...  I promised this a while back, after I did the first part.  Sorry 'bout that! So we've played around a bit with the access-list idea and some binary matching.  So let's expand our brains even further! I will start out by telling everyone that I am NOT picking on or otherwise attempting to insult any CCNA's out there by comparing methodology to what is learned in CCNA.  The idea being that there are basic and advanced ways to learn things. When we all first learned fractions,... Read More

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