If you select a cell or a range of cells and then press Delete, you may not delete the category from the legend

A(n) _______ is used to collect a set of users who need to share a particular set of permissions to a resource, such as a file, folder, or printer

a. Site b. Domain c. Organizational unit d. Group

__________ are important in compilers and operating systems—insertions and deletions are made only at one end of a __________—its top.

a) Linked lists, linked list b) Queues, queue c) Stacks, stack d) Binary trees, binary tree