What are three physical interface properties? (Choose three.)
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A. B. C. D. E.ACD
Physical interface properties refer to the characteristics of the physical connection between networking devices. Here are explanations of the three physical interface properties mentioned in the question:
FCS: FCS stands for Frame Check Sequence. It is a type of error-detection code that is added to a frame to ensure that the frame was not corrupted during transmission. When a frame is received, the FCS value is recalculated and compared to the original value. If the values do not match, the frame is assumed to be corrupt and is discarded.
Link speed: Link speed refers to the maximum data rate that can be transmitted over the physical interface. This property is typically measured in bits per second (bps) or gigabits per second (Gbps). The link speed is determined by the physical properties of the cable, the interface hardware, and other factors.
Payload scrambling: Payload scrambling is a technique used to scramble the data payload of a frame before it is transmitted over the physical interface. The purpose of payload scrambling is to reduce the likelihood of bit errors due to long runs of the same bit value. By scrambling the data, the bit patterns become more random, which makes it less likely that errors will occur.
The other two options, virtual circuit identifier and IP address, are not physical interface properties. Virtual circuit identifier is a property of virtual circuits, which are logical connections established over a physical network. IP address is a layer 3 (network layer) property that is used for addressing and routing packets in a network.