CCNA新教程第1章.pdf

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Networking
Technologies
CERTIFICATION OBJECTIVES
✓ Two-Minute Drill
Topologies Q&A Self Test
Types
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Composite Default screen CertPrs8 / CCNA Cisco work Associate Study Guide / Deal / 222934-9 / Chapter 1
2 Chapter 1: Networking Technologies
his chapter offers a brief introduction working and some working terms
and concepts. This material should be a review of many already known concepts. You
Tshould be familiar with the working topologies used works, as well as
different types works, such as local works (LANs) and wide works (WANs).
CERTIFICATION OBJECTIVE
Networks
work is basically all of ponents (hardware and software) involved in
puters across small and large distances. Networks are used to provide
easy access to information, thus increasing productivity for users. This section covers
some of ponents involved working, as well as the basic types of
topologies used to working devices, puters.
Components
One of the ponents working is applications, which enable users to
perform various tasks. Many applications work-aware. These applications allow
you to access and use resources that are not located on your puter. Some of
the working applications include e-mail (sending mail electronically),
FTP (transferring files), and WWW (providing a graphical representation to information).
The number working applications ranges in the thousands, but those listed are the
monly used.
To build work, you need three types of devices ponents: computers,
networking devices, and cabling. Computers—devices such as PCs and file servers
running Microsoft Windows, Macintosh OS, Unix (including Linux), or other
operating systems—