You don't need to memorize an answer, but do take the time to consider how you'll respond. The more you prepare, the more confident you'll feel during a job interview. When you're not sure what to expect during an interview, also take time to review this refresher on how job interviews work, and these tips on how to prepare to ace your job interview.
Whenever possible, you should speak about your achievements from the perspective of an employer (helping them to find new customers, helping them to improve their reputation, building good atmosphere on the workplace, earning more money, etc), rather than achievements from your own perspective (getting promoted, earning a degree or certification, etc).
Great candidates also want to be great employees. They know every organization is different -- and so are the key qualities of top performers in those organizations. Maybe your top performers work longer hours. Maybe creativity is more important than methodology. Maybe constantly landing new customers in new markets is more important than building long-term customer relationships. Maybe the key is a willingness to spend the same amount of time educating an entry-level customer as helping an enthusiast who wants high-end equipment.
Questions to Ask in a Job Interview as the Employer
Here are the 50 most frequently-asked questions that are posed in interviews. Be prepared to go into some detail about your work history; you may also be asked behavioral or situational questions which require you to provide an anecdote about how you have handled a work challenge in the past or, alternatively, how you would approach a situation in the future.