The Full Form of DIRL is Data Interpretation & Logical Reasoning.

Quantitative Aptitude (QA), Verbal Ability (VA), Data Interpretation (DI) and Logical Reasoning (LR) are the areas of aptitude tested in CAT exam. Over the years, majority of the CAT question papers have kept 1/3^rd weightage of Quant and Verbal each, whereas Data Interpretation and Logical Reasoning, each has been kept to 1/6^th of the test paper.  LR and DI questions are clubbed together in single section which you can check in the CAT question papers. In CAT 2020, some important points about this section would be:

• In CAT exam, the LRDI should be the 2^nd section of the test
• As per the history, this section should have sets having 3 to 4 Qs each
• There won’t be any separate cut off for LR and DI

Though various examinations i.e. IIFT, NMAT by GMAC, XAT, SNAP have shown their inclination towards a certain variety or difficulty of questions of LR and DI, they have maintained more or less same share of LR and DI in their test papers over last 10 years.