Question

What is the RAM and ROM size in CoAP?

(a) 100 KiB of RAM and 10 KiB of ROM

(b) 10 KiB of RAM and 100 KiB of ROM

(c) 10 KiB of RAM and 250 KiB of ROM

(d) 250 KiB of RAM and 10 KiB of ROM

I have been asked this question during an online interview.

My question is from CoAP Protocol topic in portion Internet Principles of IOT

Answer 1

Correct option is (b) 10 KiB of RAM and 100 KiB of ROM

To elaborate: The Internet of Things will need billions of nodes, many of which will need to be inexpensive. CoAP has been designed to work on microcontrollers with as low as 10 KiB of RAM and 100 KiB of ROM (code space).