I have passed beneath 4 papers.
1.642-502 --- Securing Networks with cisco routers and Switches
2.642-522 --- Securing Networks with PIX and ASA -SNPA
3. 642-551 --- Securing Cisco Network Devices - SND
4. 642-532 --- Implementing Cisco Intrusion Prevention Systems - IPS
I would like to know which paper should I write to complete my CCSP certification.