John Herbert of Lame Journal comments:
Some years back I took the Cisco LAN Switch Configuration (CLSC) exam as part of my CCNP. One of the my biggest complaints about the exam was that in my opinion, there was not enough technical subject matter to fill the exam, so Cisco fell back on testing us on model specifications and ASIC names. If you took this course, you may still remember the Enhanced Address Recognition Logic (EARL), Synergy Advanced Interface Network Termination (SAINT) and Synergy Advanced Multipurpose Bus Arbiter (SAMBA) ASICs on the Catalyst 5000 platform.
John is right. You have to know how the magic box moves packets in and out in order to know exactly how far you can push it before it breaks.
Read more at: Know Your Hardware Architecture!