COMPUTER NETWORKS AND COMMUNICATIONS
NETWORK DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Layer 1
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Layer 2
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Layer 3
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Layer 4
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Detailed explanation-1: -If a device only operates at Layer 1 of the OSI model, that is usually a media converter. Working at this layer, media converter is used to convert electrical signals and physical media, but don’t do anything for data changes.
Detailed explanation-2: -Layer 1 of The OSI Model: Physical Layer defines electrical and physical specifications for devices. The physical layer defines the relationship between a device and a transmission medium, such as a copper or optical cable.
Detailed explanation-3: -Layer 1 Physical Layer This may for example be electrical signals, optical signals (optical fiber, laser), electromagnetic waves (wireless networks) or sound.
Detailed explanation-4: -The layers are: Layer 1-Physical; Layer 2-Data Link; Layer 3-Network; Layer 4-Transport; Layer 5-Session; Layer 6-Presentation; Layer 7-Application.