In the ideal world of job-seeking, when attending a career fair you would
bring the following resumes with you:
Targeted by prospective employer -- where you identify the employer in your job objective
("wow, there's our company name!") and use some of the same language the employer uses in
its corporate communications (Website, job postings, media releases, etc.).
Targeted by career/job focus -- when you have more than one career focus (such as
brand management but also public relations), you should develop different versions of your
resume for each career.
Standard resume -- your basic, nicely formatted resume... so that you are
ready for any situation that may arise.
Text resumes -- text versions of your standard resumes on the chance that the
recruiter prefers a version the organization can easily scan into a database.
Suggested resume resources to aid you in this step:
Resume Tutorials for All Job-Seekers -- a
great place to start, with two versions, one for novice resume writers and one for more experienced ones.