The message about executable files applies to any install file. This is to protect you and let you know that if you choose to install the file you could run the risk of there being a virus in the file. If there is anything suspicious about the file or the source of the file, do not install it.
Is it a necessary system file? If not, just delete it. Preferably, use the File Shredder feature most antivirus programs have.
never, even if you have the best, no protection is perfect
Antivirus programs will often disinfect a file that it sees is dangerous. A disinfected file is a file that has been edited by the antivirus software, to get rid of the virus.
Well sometimes the the antivirus programs detect asp files as viruses. That has happened with me it was a .asp file which used scripting.filesystem object. So yes if your antivirus reports a virus... do check with the developer(s) if that's a legit file or not.
the virus infected file is isolated
download file, call antivirus
A multipartite virus is designed to infect multiple file types in an effort to fool antivirus software
antivirus
Just use 'Search' to find the file and then delete it from the file/folder.
Any file name can not contain /, \, *, ?, :, |, ", < or >..
Yes
Quarantines the infected file