Chapter 21 The Internet

Which protocols can you use to receive e-mail? (Select two.) A. IMAP B. POP3 C. PPP D. SMTP

A, B. You can use either Internet Message Access Protocol (IMAP) or POP3 to receive e-mail messages.

Which of the following represent invalid port to protocol matchups? (Select two.) A. 137, 138, 139, 445 = SMB B. 3398 = RDP C. 80 = HTTPS D. 22 = SSH

B, C. Remote Desktop Protocol (RDP) uses port 3389. Hypertext Transfer Protocol Secure (HTTPS) uses port 443; HTTP uses port 80.

What advantage does dial-up have over DSL? A. Dial-up is faster than DSL. B. You can be farther than 18,000 feet from a main phone service switching center. C. You can get a second phone line to use just for dial-up. D. None. Dial-up has no advantages over DSL.

B. DSL has a fairly short limit of 18,000 feet from a main switch, leaving people in rural areas (in the United States, at least) out of luck. Dial-up just requires a phone line.

Of the following four Internet connection options, which typically offers the slowest connection speed? A. Cable B. Dial-up C. DSL D. Satellite

B. Dial-up connections are robust but much slower than the other connection types.

What port does POP3 use? A. 22 B. 110 C. 42 D. 256

B. Post Office Protocol 3 (POP3) uses port 110.

What option often enables you to diagnose TCP/IP errors such as connection problems? A. FTP B. ping C. QoS D. APIPA

B. You can often use the ping command to diagnose TCP/IP problems.

Which of the following programs enable you to access and work on a remote computer from your local computer? (Select two.) A. FTP B. DNAT C. Remote Desktop Connection D. Telnet

C, D. Both Remote Desktop Connection and Telnet enable you to access and work on a remote computer. The former is just prettier and more secure!

Which of the following cellular data technologies is often considered 4G? A. EDGE B. UMTS C. LTE D. CDMA

C. Long Term Evolution (LTE) is usually considered a 4G cellular data technology.

What advantage does satellite have over cable for connecting to the Internet? A. Satellite is faster than cable. B. Cable degrades in stormy weather; satellite does not. C. Satellite requires you to be within 18,000 feet of a central switch. D. Cable is limited to areas with cable installed; satellite is not.

D. Clearly, satellite cuts you loose from the wires!

Which protocol can you use to send e-mail? A. IMAP B. POP3 C. PPP D. SMTP

D. You can use Simple Mail Transfer Protocol (SMTP) to send e-mail messages.