If you have high risk tolerance and won't need this money until retirement, you should deposit it in your choice of Vanguard Total Market or Vanguard Retirement 2050~2065, and forget about it for the next ~35~50 years.
If you anticipate needing to actually spend it within the next few years, or you are risk adverse, you can put it in CDs, which will earn you virtually nothing but let you withdraw it at any time. You'd probably want to do a CD ladder, which would leave you with some money maturing in any given month, so you could use it without penalties.
The $100k is also not your primary asset at this point in your life. That would be the NPV of your nascent career. Depending on one's existing trajectory, I'd strongly consider building capital in oneself as opposed to investing it in the formal markets. For example, if one cannot program, $10k invested in learning to program will probably absolutely destroy the ROI of most investments in the public markets.