Dear Rock, my point of view, it is not necessary to take exam on Microsoft certifications. U have done CCNA and now for u as a fresher it is enough to get u a job. There r no of certifications in the market, so how long u have to do the all certifications !! First u have to search for jobs related ur area, and u may continuing with CCNP, if u have enough time and money. But it is not necessary to take exam on Microsoft’s product at least right now.