Cisco offers three levels of certification depending upon the depth of knowledge required in each stream namely Entry Level, Associate, Professional and Expert..
DevNet Associate is an Associate level certification available.
DevNet Associate test the skills in developing and maintaining applications built on Cisco platforms.
DevNet Associate tests you in implementing basic network applications using Cisco platforms as a base, and how to implement automation workflows across network, security, collaboration, and computing infrastructure.
To obtain DevNet Associate certification, the exam required is:
200-901 DEVASC : Developing Applications and Automating Workflows using Cisco Platforms (DEVASC)