BackendDevOps/CloudGeneralTable-stakes
TCP vs UDP
Also written as Transmission Control Protocol, User Datagram Protocol
The two basic ways data travels over a network. TCP guarantees delivery and order (web pages, APIs); UDP is faster but can drop or reorder packets (video calls, gaming, live streaming).
Think of it like
TCP is a registered letter that confirms delivery; UDP is shouting across a room — faster, but you might miss a word.
Junior or senior?
Table-stakes vocabulary.
Senior sounds like
Can explain why a specific system in their stack chose one over the other, not just define both.
Ask them
“Was there a part of your system that specifically needed UDP instead of TCP? Why?”