Hi Rabiul,
Thank you for contacting the Microsoft Community.
We appreciate your detailed feedback regarding your recent experience with the DP-600 exam. We understand the challenges you encountered regarding the time limitations during the review period. Rest assured, we take your concerns seriously and are committed to addressing them appropriately.
Ensuring the accuracy and fairness of our examination processes is paramount, and I have forwarded your feedback to the relevant team as this serves as a valuable resource in this regard.
To ensure that you are well covered, kindly provide us with the necessary information through private message to further assist you.
Meanwhile, if you utilized a company discount to your DP-600 exam, kindly note that you need to first contact the ESI Support Team through your work email. They will provide you with the appropriate instructions and guidance as they are the experts when it comes to handling concerns raised by an ESI learner. They typically respond within 3-5 business days.
For further assistance needed at our end after your interaction with the Support Team, kindly provide the Case ID number from ESI to the private message. This will allow us to follow up with them on your behalf.
For future reference, according to Exam duration section, please be aware that the number of questions on a certification exam is subject to change to ensure that it aligns with current changes in the technology and job role. Most Microsoft Certification exams contain between 40-60 questions, and please note that the exam time varies based on the type of exam you take.
Additionally, since you mentioned that the actual exam time was for 1 hour and 40 mins, and when you book the exam, it was 120 mins. I have verified that you took a DP-600 exam which is an associate and expert role-based exams without labs exam type. Please know that Exam duration refers to the amount of time that you have to complete the exam. Seat time refers to the amount of time that you should allocate for the exam. It includes the time needed to review the instructions, read, and accept the Microsoft Certification Exam Agreement, complete the exam questions, and provide comments after completing it (if you choose to do so). You may also refer to the image below:

Your patience and understanding in this matter are genuinely appreciated as we work to ensure a seamless experience for all users. As our goal is to ensure that we will be able to assist you properly, please let us know if additional information is needed.
I look forward to your response. Please note that if no response is received after two business days, the case will be closed and locked. After the case is locked, we will no longer be able to respond, even through Private Messages.
Best Regards,