Hi Simon,
To be totally honest, I'm really getting on slowly with this. Started studying the first week of Jan and I'm still only on the first chapter
How does the CCDA differ from the CCNA?
From what I can make out CCDA is for design, whereas CCNA is for implementing/supporting.
CCDA would be like the 70-219 (MS exam) or Project+ (sorry could find an exact exam from Comptia)
CCNA would be like the 70-216 (MS exam) or Network+.
So far (on chapter 1) it's nothing new everything so far is a repeat of what I've learnt before, but it's still early days.
And Yep, it's just a change - study something different and get a CISCO cert under my belt.
Will be posting more once I get more into it.
Catch you later
-ken