As always, time is quite an important factor in attempting 700-821 certification exam. So i was trying to improve my speed with just random questions. My professor from college suggested it is necessary to attempt mocks for this. I zeroed in on Cisco IOTSE practice tests that were easily available online with a range of features that helped me improve my speed in an organic manner.
Cisco IOTSE Certification
Before you write the Cisco IoT Essentials for System Engineer (700-821) certification exam, you may have certain doubts in your mind regarding the pattern of the test, the types of questions asked in it, the difficulty level of the questions and time required to complete the questions. These 
A great way to start the Cisco IoT Essentials for System Engineers (IOTSE) preparation is to begin by properly appreciating the role that syllabus and study guide play in the Cisco 700-821 certification exam. This study guide is an instrument to get you on the same page with Cisco and understand the nature of the Cisco IoT Essentials for System Engineer exam.