Work place Work plac Work place Workplace Work place Work place Figure 1-1 What is a Local Area Network?. LAN Overview ©A Local Area Network LAN is a group of computers and n
Trang 4Work place Work plac
Work place Workplace Work place Work place
Figure 1-1 What is a Local Area Network?
ATHENA
Trang 5Why we use a Network’?
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LAN Overview
©A Local Area Network (LAN) is
a group of computers and network communication devices interconnected within a seographically limited area
OLAN provide companies with
time and money Saving
©LAN is simple, inexpensive,
Support many type of protocols
ATHENA
Trang 7Setup a Local Area Network
©Sim ple Connections
¢ Installing an adapter card to connect
computer on a LAN was a complicated process
¢ The software accompanying a LAN adapter Is automatically configured to allow the
computer to begin communicating
immediately
ATHENA
Trang 8Setup a Local Area Network
©Sim ple Connections
¢ This auto-recognition and auto-configuration
is called plug-and-play compatibility
¢ With plus-and-play, the software will ask some questions so that it can define the
parameters required to get your PC
communicating with other PCs on the network
ATHENA
Trang 10LAN Supports Multiple Protocols
© Supports Multiple Protocols
¢ A protocol is method or procedure used for the exchange of information between two communications devices
¢ Mostim portant protocol
Novell Netware AppleTalk
TCP/IP
OSI protocol
ATHENA
Trang 11LAN Support New Applications
©Support New Applications
e We all use e-mail to communicate
and LANs can make that process
faster and easier
¢e Many LAN support voice-mail, video conferencing, and distance learning
ATHENA
Trang 12LAN Support New Applications
©OSupport New Applications
ATHENA
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Server-Based Network
SERVER - BASED NETWORK
= A
Trang 15Server-Based Network
©A server-based network consist ofa
sroup of user-oriented PCs (call
clients) that issue requests to a server
©OSpecialized Servers: File server, print
Server, Database Servers
ATHENA
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Peer-to-Peer Network
©A peer-to-peer network consist ofa
sroup of PCs that operate as equal
© Each PCis called a peer and act asa
client or server
© User of each computer determines
what is shared
ATHENA
Trang 18Peer -to-Peer Network
Trang 20Peer-to-peer Network
¢e Where Peer-to-Peer is appropriate?
—Fewer than 10 users
—Security is no need
— User located in same general area
— Organization will have limited growth
in the future
ATHENA
Trang 21Com bination Networks
© Include peer-to-peer and server based
networking
© Server based operating system is
responsible for sharing the major applications and data
© Clients can run Win NT workstation, Win
935, Win 98, Win Me, Win XP They can
access resources on server and share
their resources
ATHENA
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Networks Classification
©LAN: Local Area Network
OWAN: Wide Area Network
OMAN: Metropolitan Area Network
©GAN: Global Area Network
ATHENA
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ATHENA
Trang 24| IIlll wlll Rs 2 VoIP (2) Network Printers
llll IIIll (10) Office Phones E—-