CCENT 640-822 ICND1 Exam Topics Review
Describe the Operation of Data Networks:
Network Devices and Applications
12 April 2015
RE Meyers, Ms.Ed.
Disclaimer
This review is for the exclusive non-profit use by
Cisco Academy instructors and students only!
Contents of this review were derived from the following
sources under the doctrine of US copyright “Fair Use”
section 107:
• Cisco Networking Academy Curricula: Discovery Networking for
Home and Small Businesses version 4.x
• Interactive Course Guide, Cisco Learning Institute
• CCENT/CCNA ICND 1 Official Exam Certification Guide, 2nd ed.
by Wendell Odom, Cisco Press, 2008; ISBN1-58720-182-2
• Cisco Learning Network
https://learningnetwork.cisco.com/docs/DOC-4987
• Other references footnoted in individual slide notes area.
12 April 2015
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CCENT Exam Topics
 Describe the operation of data networks
Describe the purpose and functions of various network
devices
Select components required to meet a given network
specification
Describe common networking applications including web
applications
Describe the components required for network and
Internet communications
https://learningnetwork.cisco.com/docs/DOC-4987
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Types of Computers
Mainframe
Large centralized computers found in larger enterprises
and purchased through specialized resellers.
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Types of Computers
Servers
High performance computers used in businesses and
other organizations to provide:
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File storage
E-mail storage
Web pages
Print sharing
Types of Computers
Desktops
Commonly used to run applications such as
• Word processing
• Spreadsheets
• Networked applications
– Email
– Web browsing
– File transfer
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Types of Computers
Workstations
High-powered specialized business computers
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CAD (Computer Aided Design) Workstations
3-D graphics design
Video animation
Virtual reality simulation
Network Media
Provides the connections between hosts
Cables
• Copper
• Fiber optic
Wireless
• Radio Frequency
• Infrared
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Shared Peripheral Devices
Connect to the network through a host
Scanners
Locally attached printer
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Networking Devices
Hub
Connects hosts
Layer 1
Switches
Connects hosts
Layer 2
Routers
Connects LAN’s
Layer 3
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Peer-to-Peer Networks
Two or more directly connected PC’s
Wired – direct, hub, switch
Wireless – WLAN, Bluetooth, infrared
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Peer-to-Peer Networks
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Client Server
The key characteristic is the client sends a request
to a server, and the server responds by carrying out
a function.
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Client Server Applications
Note the protocol of each application service
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Common Business Networking Needs
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