@Noufalsubaie No, the exam environment and the lab env is not the same. Also, it cannot be known whether a particular software / tool is available or not in the exam unless it is actually there in the exam. The exam environment contains the tools / packages required to complete the exam. Sometimes there are additional repos available whose information is provided in the exam instructions. You need to check what is available and what is not. Be confident that generally available tools are there like vim are available but there is no guarantee that your favorite tool will be there in the exam env as it is a minimal environment which contains just the required tools / configurations to be able to perform a task with ease. You can very well raise a support case to the exam team but I doubt you will get a definite answer on that. If you get a concrete answer from the exam support on this , please provide the info here as well.
