CET stands for Common Eligibility Test in the context of government job exams.
The National Recruitment Agency (NRA) was set up to conduct a common screening test for SSC, RRB and IBPS-level posts.
The idea is one common test whose score can be used to shortlist candidates for multiple recruitments.
Until the NRA CET is fully rolled out, exams continue through their existing bodies like SSC and RRB.
Watch the official NRA and SSC websites for the latest updates on the CET rollout.