Question Analysis:
By asking this question, your interviewer is really trying to assess your time management skills. It's a fair question, especially given the sheer number of projects, meetings, phone calls, emails, and other time demands that come up on any given work day. The interviewer may also wish to see how you handle deadlines, how you interact with your supervisors and coworkers when you need help, and what you do to stay organized.
Answer by stating that you’ve developed specific mechanisms for coping with multi-tasking challenges. Talk about what you’ve done to enable yourself to succeed in this type of environment.
It often helps if you can give a specific example of when you dealt successfully with a multi-tasking situation. The STAR (situation-task-action-result) approach works well here, so build your example around that framework. Use a genuine example and tell the whole story, albeit in abbreviated form. Look for an example that sets you apart, and emphasize to the interviewer how your exceptional time management skills helped strengthen your company.
Knowing how to answer a “behavioral” interview question like this can mean the difference between a job offer and sending out more resumes. So, take the time to prepare for this sort of abstract question.