BTW, just to be clear, such LBing, w/o Etherchannel, requires you to have multiple VLANs and "manually" determine which link they will use.
Although even with Etherchannel, it can be difficult to obtain good LBing, as Etherchannel is flow based, and general has multiple options for how to distribute flows, often you would achieve better LB results using Etherchannel.
From an engineering perspective, for such an interview question, possibly the best (first) response would be "why do you want to do this?"
However, though, be warned, some interviewers only want whatever answer they want. Laugh, a personal example, many years ago I interviewed for a DBA (MS SQL databases) position at the Federal Reserve, in DC. One question they asked, what's the command to backup a database? I answered, off the top of my head, I don't know, I would need to consult the manual. What I've done in the past, was set up scheduled backups, and my concern then was checking to insure they succeeded (actually, my automation would send me messages if there was an issue). This wasn't the answer they wanted.
They also asked me, how would you partition a database for performance? I said, partition? Ah, you do know about striping and mirroring disks at the server level? Which, often, does a much better job of dynamically distributing I/O load than I can achieve via manual database partitioning. Again, not the answer they wanted.
They also asked, what else might you do to improve database performance? I responded, teaching your database programmers, a bit more, how it works, under the covers. Once again, that didn't seem the answer they wanted (i.e. I suspected, whatever they had read in a DBA manual).
Not sure what kind of impression I made on them, but they surely made an impression on me. First, and only time, I called the following day and asked to be withdrawn from consideration.
