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Chapter 23: The Internet questions and answers graded A+ passed
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Chapter 23: The Internet questions and answers graded A+ passed
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Chapter 23: The Internettiers - correct answer ✔✔To keep everything running smoothly, the Internet
is broken down into groups called "_____".
Tier 1, Tier 1 providers - correct answer ✔✔The main tier, called "_________", consists of a small
number of companies called "________________".
backbones - correct answer ✔✔The Tier 1 providers own long-distance,
high-speed fiber-optic networks called
"______________".
network access points (NAPs) - correct answer ✔✔These backbones span the major cities of the earth
(not all Tier 1 backbones go to all cities) and interconnect at special locations called
"___________________________".
Tier 2, Tier 2 - correct answer ✔✔"___________" providers own smaller, regional networks and must
pay the Tier 1 providers. Most of the famous companies that provide Internet access to the general
public are "_________" providers.
Tier 3 - correct answer ✔✔"_________" providers are even more regional and connect to Tier 2
providers.
Backbone routers, Backbone routers - correct answer ✔✔"______________________" connect to more
than one other "______________________", creating a big, interwoven framework for communication.
alternative pathways - correct answer ✔✔The key reason for interweaving the backbones
of the Internet was to provide "___________________" for data if one or more of the routers
went down.
, TCP/IP services - correct answer ✔✔Programmers can write applications built to take advantage of the
TCP/IP structure and features, creating what are called "________________"
Internet service providers (ISPs) - correct answer ✔✔Every Tier 1 and Tier 2 provider leases connections
to the Internet to companies called "___________________".
hardware, software - correct answer ✔✔Connecting to an ISP requires two things to work perfectly:
"______________" for connectivity,
such as a modem and a working cable line; and "_______________", such as protocols to govern
the connections and the data flow (all configured in the OS) and applications to take
advantage of the various TCP/IP services.
DHCP server, TCP/IP - correct answer ✔✔With most ISPs, a "_____________" will provide your computer
with the proper "___________" information.
default gateway - correct answer ✔✔As you know, the router to which you connect at the ISP is often
referred to as the "__________________".
dial up, dedicated, wireless, - correct answer ✔✔Computers commonly connect to an ISP by using one of
eight technologies that fit into
four categories: "___________" both analog and ISDN; "_________________" such as DSL, cable, and
fiber; "______________" including Wi-Fi and cellular; and satellite.
Modems - correct answer ✔✔"___________" enable computers to talk to each other via standard
commercial telephone
lines by converting analog signals to digital signals, and vice versa
baud - correct answer ✔✔Phone lines have a speed based on a unit called a "______", which is one cycle
per second.
Point to Point Protocol (PPP) - correct answer ✔✔Dial-up links to the Internet have their own special
hardware protocol called
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