What is the collection of high level description construct that hide many low level details

1. list up to six important assumption required to apply the m/m/s queueing model at barnacle cleaners for evaluating the two alternative presented in this analysis. for each assumption, write 1-2 sentences explaining why it is a valid assumption.

What are the three parts to physical security standards for various types of army equipment and the risk level

Jackson is teaching the decimal number system. he wants his students to know how to expand numbers by powers of 10. which is the correct order in which digits are assigned values in the decimal number system?