two questions regarding the re-cert CCNP issue
1. before CCNP expiration, I must pass any 642 exam to re-cert CCNP. does it means that I pass 642-901, then I can re-cert the CCNP?
2. does it have the "number of re-cert" limitation for CCNP? e.g. re-cert CCNP three or four times using the same approach.
1. Yes the 642-901 BSCI Building Scalable Cisco Internetworks (BSCI) would work perfectly well to re-cert.
2. There is no limit to the number of times the CCNP re-cert can be acheived using this method :)
Hope this helps!