If you think of a as a chain made up of series of links it will help you better visualize and understand the possible points of failure.
Cat5e wall jack not working.
The plastic jacket is suppose to be crimped inside the jack it help prevent the wires from being pulled loose.
Seeing it s an apartment i d contact your property management company and or speak to.
If the wall jacks are using the more standard wire colors you have the brown and orange pairs swapped.
The cables are not terminated or connected to a switch thus all of the additional wall jacks are a dead end.
It also appears these cable were terminated by someone who does not do it often.
It s not enough just to have pin 1 connected to pin 1 pin 2 to pin 2 and so on.
So i live in a new house we moved into it about 5 months ago when i say new i mean it s just build around 2 3 years ago the original owner put in a ethernet wall jack in each room they each consist of cat5 cat5e and coxial jacks now i pulled the backing off and they are all connected to yellow cables and blue cables ethernet cables now i went into my basement and found the yellow.
The cat5 wall jacks are just like the power outlets in your house.
Troubleshooting a cat 6 or cat 5 network connection from the network switch to the data outlet and or computer can sometimes be very frustrating even for an experienced professional.
You should have one pair on pins 1 and 2 another on pins 3 and 6 another on pins 4 and 5 and the last on pins 7 and 8.
Each jack should have a cable that is running to a central location.