Answer: Technician A is correct.
Explanation: An open ground on the right may be the reason the headlight is not functioning on low or high beam. Most electrical circuit related problems in automotive are caused by open ground.
A ground should be clean, tight and free of corrosion and also making good metal to metal contact.
A ground is an electrical circuit system or connection in an automotive.
A dimmer switch on the other hand is a device that controls the vehicle's headlight functions. If the headlight does not function on high or low on the right. It can't be a dimmer switch, hence it may be ground problem.
Answer:
MAC Addresses (Destination and Source MAC address)
Explanation:
A switch has 3 primary functions:
- Forward frames
- Learn addresses
- Avoid loops
An Ethernet frame has the header, data and trailer and there are two specific fields in the header that helps the switch to know where to send data in future transmissions.
- destination MAC address
- source MAC address
every Ethernet frame has this and when the frame hits a switch or any device, any device can look at it ( an Ethernet frame ) and know where it is suppose to go and where it came from.
Every switch has a MAC address table where it stores MAC addresses of different computers on the network.
Example:
When a PC1 sends a frame to PC2 through a switch, the switch looks at the header of the Ethernet frame for the source mac address and adds the source MAC address to its MAC address table and also the port that it came through.
simply put:
A switch looks at the source MAC address to see if it knows it already, if it does. Great! no need to add it again to it's address table.
If it doesn't, it adds it's source address and the port that the frame came from.
This basically how the switch populates its MAC address table.
The answer is true because choosing a technology solution is the last step
