Can I become a network engineering after completing 1-year Diploma in hardware and networking?

You have faced real life problems, troubleshoot in networking Cisco routers, wireless access points lot of experience, you have to address critical situation.

One can not become a network engineer after completing Diploma, you have to complete a degree course in networking to be called as an engineer Check out the article below for details : https://www.shiksha.com/careers/computer-network-engineer-236.