Benefits of PDF files Portable Document Format, popularly known as PDF is used to send files to consultants, partners, friends and clients alike. Due to its portability, PDF is vastly used by companies to ensure no change is made on the original document. Additionally, you can navigate PDF files either by use of hyperlinks or keyword search.
Explanation:
So bascily is it a highly compatible file and it cant be edited
If there is a yellow shield next to the wireless icon, this indicates that the connection is functioning but is not secured. In this case because she's using the hotel guest wifi, I would tell her to switch to a more secure network or to disregard the error.