Publishing several research papers in the same journal In some cases a specific journal is one of the most important and relevant places for a research topic. So, is this normal and acceptable (for a pre-Ph.D. researcher) to have several papers published in that journal? I once heard from a professor that it may affect the CV in a destructive way. 

If I have several papers published in the same journal, will people think that my papers were published not because they were good, but because I was somehow able to bypass the peer review process?
It would depend on the journal, of course. There should be no negative effect if it is a high quality, respected journal such as one associated with a professional society. A predatory journal would be a different matter of course. But the several papers in the same high quality journal have been reviewed by a fairly large number of independent reviewers. 

Whether the editors would continue to accept papers from the same person is up to them, of course.