IELTS stands for International English Language Testing System and CD-IELTS stands for Computer Delivered – International English Language Testing System. Although both the exams are same, however, the medium of exam delivery is different as IELTS is taken on a paper and CD-IELTS is conducted via Computer.
Since, CD-IELTS exam involves the usage of computer for its execution so students must be efficient in using computers. For instance, they should have a good typing speed and accuracy for the writing section of CD-IELTS. Moreover, they should be comfortable in reading passages and questions over the computer screen and marking the answers on the same.