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该【CCNA培训讲义(1) 】是由【zhangkuan1436】上传分享，文档一共【205】页，该文档可以免费在线阅读，需要了解更多关于【CCNA培训讲义(1) 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。协议基础础
OSIModelOverview
DataFlow
Layers
Transport
Data-Link
Network
Physical
Application
(Upper)
Layers
Session
Presentation
Application
RoleofApplicationLayers
Telnet
FTP
UserInterface
Examples
Application
Telnet
FTP
ASCII
EBCDIC
JPEG
UserInterface
Howdataispresented
Specialprocessingsuchasencryption
Examples
Presentation
Application
RoleofApplicationLayers
Telnet
FTP
ASCII
EBCDIC
JPEG
Keepingdifferentapplications’’
dataseparate
UserInterface
Howdataispresented
Specialprocessingsuchasencryption
OperatingSystem/
ApplicationAccess
Scheduling
Examples
Session
Presentation
Application
RoleofApplicationLayers
Keepingdifferentapplications’’dataseparate
Userinterface
Howdataispresented
Specialprocessingsuchasencryption
Telnet
FTP
ASCII
EBCDIC
JPEG
OperatingSystem/
ApplicationAccess
Scheduling
Transport
Data-Link
Network
Physical
Examples
Session
Presentation
Application
RoleofApplicationLayers
RoleofDataFlowLayers
EIA/TIA-
Examples
Physical
Movebitsbetweendevices
Specifiesvoltage,wirespeed,andpin-outcables

HDLC
EIA/TIA-
Examples
RoleofDataFlowLayers
DataLink
Physical
Combinesbitsintobytesandbytesintoframes
AccesstomediausingMACaddress
Errordetectionnotcorrection
Movebitsbetweendevices
Specifiesvoltage,wirespeed,andpin-outcables

HDLC
EIA/TIA-232
IP
IPX
Examples
RoleofDataFlowLayers
Network
DataLink
Physical
Combinesbitsintobytesandbytesintoframes
AccesstomediausingMACaddress
Errordetectionnotcorrection
Movebitsbetweendevices
Specifiesvoltage,wirespeed,andpin-outcables
Providelogicaladdressingthatroutersuseforpathdetermination
TCP
UDP
SPX

HDLC
EIA/TIA-232
IP
IPX
Examples
RoleofDataFlowLayers
Transport
DataLink
Physical
Reliableorunreliabledelivery
Errorcorrectionbeforeretransmit
Combinesbitsintobytesandbytesintoframes
AccesstomediausingMACaddress
Errordetectionnotcorrection
Movebitsbetweendevices
Specifiesvoltage,wirespeed,andpin-outcables
Network
Providelogicaladdressingthatroutersuseforpathdetermination

CCNA培训讲义(1) 来自淘豆网www.taodocs.com转载请标明出处.