Which actions help to protect a computer and keep it running properly? Check all that apply. performing regular scans
deleting any unwanted files
backing up files and other data
saving Internet browsing history
saving and storing all junk files

The ieee 802.11: defines standards for wireless local area network (wlan) communication protocols. identifies various computers or devices connected to a network. verifies any resource attached to another computer on a network that is different from the computer to which the user is logged on. connects multiple local area networks (lans) and wide area networks (wans).