In the handbook (https://training.linuxfoundation.org/wp-content/uploads/2019/04/CKA-CKAD-Candidate-Handbook-v1.18-March-2019.pdf) all it says:

Exams are graded for results. There may be more than one way to perform an objective on an Exam and unless otherwise specified, the candidate can pick any available path to perform the objective as long as it produces the correct result.
Though we cannot guarantee the availability of rescoring for an exam server, candidates may make a request for an exam to be rescored up to 2 days following the date on which the exam was taken.