I passed the phone screen and went onsite.

During the process, I met with engineers and managers. The interview questions were normal. The biggest issue was that they assigned an engineer who seemed to speak very little English. It took me a long time to figure out what he was asking, and by then, I didn't have enough time to finish my response.

That was the most frustrating part of the process: knowing you can solve the problem but are unable to due to poor communication from the interviewer.

From the non-English engineer:

"The OS reads 4KB of data. The file can be 1KB, but the OS stores it in 4KB blocks.

It has this function: int read4K(buffer).

Can you write a function int read(buffer, int) that uses read4K(buffer) so apps can call it?"