minh o tphcm. minh muon thanh lap nhom hoc tap, nghien cuu ve CCNA, CCNP...ban nao thich thi PM de minh biet. khuyen khich nhung nguôi nao da thi CCNA hoac CCNP roi de truyen lai kinh nghiem cho nhung anh em chua co. ai o tphcm thi lien he voi minh
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