What keeps unauthorized internet users out of private intranets?

Which of the following has not been attributed at least in part to social media a. drug addiction b. depression c. kidnapping d. murder

Which type of file can be used to import data into a spreadsheet?

Jason works as an accountant in a department store. he needs to keep a daily record of all the invoices issued by the store. which file naming convention would him the most? a)give the file a unique name b)name the file in yymmdd format c)use descriptive name while naming the files d)use capital letters while naming the file