Answer:
C. Device Manager
Explanation:
Assuming you CAN access Windows Desktop from the PC, the first thing you would do is verify your Display Driver in Device Manager to see if the appropriate driver is installed, if not, install the drivers from the manufacturer's website, or use a software that does that. Other options would be to revert the driver to an older version.
Answer:
SMTP
Explanation:
This is the SMTP or the Simple Mail Transfer Protocol. It is the push protocol and is used to send the mail message. Whereas POP3 and IMAP are meant for retrieving the message. These are the three main types of protocols associated with mail services. And the correct answer here is certainly the SMTP.
The answer would be the TCP/IP Application Layer.