CCNA Data Center Functions of Networking
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Transcript of CCNA Data Center Functions of Networking
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CCNA Data CenterFunctions of Networking
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» Networks are comprised of devices and endsystems, such as Hosts and Servers that areconnected enabling them to communicatewith each other.
What is a Network?
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Example Network
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» PCs/MACs» Network Interface Cards (NICs)» Switches» Routers
Physical Components of a Network
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Sample Network Diagram
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» Applications – Email, DB, UC, File/Web Services» Printing resources» Network Storage – NAS (CIFS/NFS) or SAN» Backup Devices – Tape or Network
Sharing of Resources
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» Batch applications • FTP, TFTP, inventory updates (no direct interaction) • Bandwidth is required, but not critical» Interactive Applications • DB updates or Inventory queries (Human to
machine interaction) • Response time is important, but not critical» Real-time Applications • Voice and Video (Human to machine interaction) • Latency is critical
Application Interactions
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» Availability – Measure of uptime» Scalability – Growth potential» Reliability – MTTR or MTBF» Security – Built-in protections» Speed – Data rates» Cost – CapEx and OpEx
Network Characteristics
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Network Topologies
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Wireless Topology