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Computer Maintenance Chapter 23

Terms in this set (35)

Tier 1 providers own long-distance, high-speed fiber-optic networks called ______________.
backbones
What tool provides the basic software structure for communication on the Internet?
TCP/IP
Every Tier 1 and Tier 2 provider leases connections to the Internet to companies called ______________.
Internet service providers (ISPs)
With most ISPs, a(n) ______________ server will provide your computer with the proper TCP/IP information.
DHCP
What device turns digital data into an analog signal for sending it over the telephone line, and then turns it back into digital data when it reaches the other end of the connection?
Modem
Which tool transfers data via analog signals?
Modem
What type of signal does a computer use to communicate?
Digital
Phone lines have a speed based on a unit called a ______________, which is one cycle per second.
baud
The Integrated Services Digital Network (ISDN) sends telephone transmissions across what type of lines?
Digital
How many physical lines does the Basic Rate Interface (BRI) setup use?
One
What is another term for primary rate interface (PRI) ISDN lines?
T1
______________ connections to ISPs use a standard telephone line with special equipment on each end to create always-on Internet connections at speeds much greater than dial-up.
DSL
What service runs from the provider straight to a home or office, using fiber the whole way?
FTTP
Marketed as and now generally accepted as a true 4G technology, LTE networks feature theoretical speeds of up to ______________ download and 75 Mbps upload?
300 Mbps
Which high-speed Internet technology uses line-of-sight?
Satellite
Many computers can share a smaller pool of routable IP addresses with _______________.
DNAT
All Web browsers use the _______________.
Hypertext Transfer Protocol (HTTP)
What port number is used by HTTPS?
443
What protocol uses port numbers 67 and 68?
DHCP
Which servers provide Web sites you access by using the HTTP protocol on port 80?
Web
Which software enables multiple connections to the Internet to go through one protected computer?
Proxy server
What is the most widely used standard for receiving e-mail?
POP3
What port number is used for sending e-mail?
110
What port numbers are used by FTP?
20 and 21
Which protocol is nothing more than FTP running through an SSH tunnel?
SFTP
What allows you to make voice calls over a computer network?
VoIP
What is the most common VoIP application protocol?
SIP
What term refers to the amount of time a packet takes to get to its destination?
Latency
What allows you to give anyone control of your desktop through an e-mail invitation?
Remote Assistance
What term refers to encrypted tunnels that create private networks through the Internet?
VPNs
Which protocol enables operating systems and applications to access directories?
LDAP
What ports does the Service Location Protocol (SLP) use?
UDP and TCP port 427
The oldest family of chat programs is based on the ______________ protocol.
Internet Relay Chat (IRC)
What is a very common IRC chat program?
mIRC
Which protocol do Internet games employ to send information using ports reserved by the game?
TCP/IP
THIS SET IS OFTEN IN FOLDERS WITH...