56. What is the shortcut key to switch between open applications in macOS?
a. Cmd + Tab
b. Cmd + Space
c. Cmd + Shift + 3
d. Cmd + Shift + 4
Answer: a. Cmd + Tab
57. What is the shortcut key to show the desktop in macOS?
a. F11
b. F12
c. Cmd + F3
d. Cmd + F4
Answer: c. Cmd + F3
