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Computer NetworkingComputer NetworkingDr. Mohammad AlhihiDr. Mohammad Alhihi
Communication and Electronic Engineering Department
Philadelphia University Faculty of Engineering
communicationcommunication
Network componentsNetwork components
DevicesDevices
MediaMedia
ProtocolsProtocols
Message Message
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Basic Computer Network Concept:Basic Computer Network Concept:
DevicesDevices
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DevicesDevices
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Basic Computer Network Concept:Basic Computer Network Concept:
DevicesDevices
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Hup
DevicesDevices
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Switch
DevicesDevices
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router
MediaMedia
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Cable typeCable type
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Cable typeCable type
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Segmentation 5,4,3 ruleSegmentation 5,4,3 rule
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Segmentation 5,4,3 ruleSegmentation 5,4,3 rule
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ProtocolsProtocols
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human protocols:“what’s the time?”“I have a question”introductions
… specific mages sent… specific actions taken when mages received, or other events
network protocols:machines rather than humansall communication activity in Internet governed by protocols
protocols define format, order of msgs sent and received among network entities, and actions taken on msg transmission, receipt
ProtocolsProtocols aa human protocol and a computer network protocol: human protocol and a computer network protocol:
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Hi
Hi
Got thetime?2:00
TCP connection req.
TCP connectionreply.
<file>
time
Q: Other human protocol?
MessageMessage
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properties properties communicationcommunication
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11 Fault Tolerance (Redundancy)Fault Tolerance (Redundancy)
2 Security 2 Security 3 scalability 3 scalability 4 Quality of services 4 Quality of services
properties properties communicationcommunication
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1.Fault Tolerance (Redundancy)
The presence of more than an access The presence of more than an access point,point,
in the case of line failure connected in the case of line failure connected to the network to work at full to the network to work at full efficiencyefficiency
properties properties communicationcommunication
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1.Fault Tolerance (Redundancy)
properties properties communicationcommunication
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2.Security2.Security
properties properties communicationcommunication
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Design flexibility in network
3. scalability
properties properties communicationcommunication
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4 Quality of services 4 Quality of services
Communication over the Communication over the networknetwork
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1.Message
segmentation
Benefits segmentation on the network1. More than one device sends with some2. Sends missing packet only(Bandwidth )3. Reduce the pressure on network
Communication over the Communication over the networknetwork
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1.Message1.Message
MultiplexingMultiplexing
More than send the device at the same time
Communication over the Communication over the networknetwork
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2.Devices
Communication over the Communication over the networknetwork
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2.DevicesNetwork Access DevicesConnecting devices in a single network
Communication over the Communication over the networknetwork
Inter network Devices Inter network Devices 1.1. Connecting devices in Multiple Connecting devices in Multiple
networksnetworks
2.2. Identifies the error when it occursIdentifies the error when it occurs
3.3. Identifies (PATH)Identifies (PATH)
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Any Any
QuestionQuestion
