When using the mailx mail command, if you want to send e-mails to a user on another server or network, you must use their ____.

A Web ________ is used to display webpages and navigate the Internet

Fill in the blank(s) with correct word

Which of the following are valid identifiers?

i. R3D3 ii. per-capita iii. phone#iv. ice_cream v. 92_aardvarks a. i, ii, iv, v b. i, iv c. i, ii d. ii, iv, v e. All are valid.