I recently had a few interviews for programming jobs within the financial industry. I am looking for entry-level positions as I specify in the cover letter. However I am usually asked questions such as:
- all two-letters commands you know in unix
- representation of float/double numbers (ieee standard)
- segmentation fault memory dump, and related issues
- all functions you know to convert string to integer (not just atoi)
- how to avoid virtual tables
- etc..

Is that the custom? Because I don't think this kind of questions make sense for someone willing to get an entry-level job. Is it totally crazy to think that they should ask more conceptual questions? This is beginning to driving me nuts, honestly.

Thanks