Is verbatim copying several paragraphs of text with citation considered plagiarism? Is it plagiarism if I copy several paragraphs from another's source (let's say a CS paper) into my work and then footnote Source: ..., for example, as background information?
If you copy something verbatim, you are required to put quotations mark around it, and also cite where the quotation came from. Anything less could be construed as plagiarism.