My nature of job includes network and systems administration. This includes work with routers, switches, and other kinds for network servers for DNS DHCP etc. I also do Enterprise network architecrure and have an master's degree viz., Masters in computer applications with major in embedded systems. Noc 2147 requires bachelor's degree and above but 2281which closely matches my profile doesn't require master's degree and doesn't list Enterprise network architecture in the job duties. I am confused, should I use NOC 2147 or noc 2281 for applying? Noc 2147 looks more like for people into computer hardware design. Someone please let me know.