Dear group, Tday,I passed ccna 1.0,scored 897.I think the OSI reference model is very important. anyway,I wanna pursue ccnp 2.0, which one the best I first prepare?routing?switching?or Dialer? could you recommend a reference book for it? thanks dean ___________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]