Job Fairs are great places for freshers to approach many different recruiters at one single spot. This is a blessing for many freshers which saves them a lot of effort. There are many things to be considered while attending job fairs.
Dress appropriately: The candidate who wears a business suit will get noticed by an employer. So, it is very important that you should always dress properly while attending job fairs. If you are looking for job fairs, then you can also check out this source: Silicon Valley Career Fair at Diversity Career Group.
Ask smart questions: Just dropping off a resume won't impress a recruiter. Ask questions about the job you want to offer your business card and ask for theirs.
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Expect low-paying jobs at many job fairs: High turnover and low pay are partly why some companies are constantly at job fairs. Once you realize this, either stay away from those employers or ask how quickly you can move up or if there are other, better-paying positions that you're qualified for.
Even if they don't have a job for you, they might know another company that does and can pass your name along.
Research the companies you want to talk with: Know before you walk in the door what companies you're interested in, research them and have something intelligent to say or ask about the company when you get to the front of the line.