Which network component blocks data?

when it is aware that the destination address is not present on the other side, then the blocks the data from crossing it

What kind of software users of all skill levels create web pages that include graphics, video, audio, animation, and other special effects? website authoring website software website publishing website editing

An atom's diameter is about 0.1 nanometer (1×10-9m), and a human hair is about 1×10-3m. how many times greater is a human hair than an atom's diameter? sorry pushed wronf button but this is math

Effective character encoding requires standardized code. compatible browsers. common languages. identical operating systems.