Computer cables and Wi-Fi router

Karsten, I could also say now: "The older generation always complains about the media usage of the new generation."
I once read an interesting article stating that at the beginning, reading books on trams was viewed very critically by the older generation because it supposedly led to people not talking to each other anymore, making books "dangerous" and people getting dumbed down.

But I won't say that, instead I recommend the following article on heise.de:
"Statistically speaking": Linear TV and Video on Demand are neck and neck among young people. Especially the image of the statistics at the very bottom basically says it all.
(Linking is unfortunately not allowed)

This is about a media change and, along with it, a necessary different wiring. You have more than one socket per room now, right? Your grandpa might have shaken his head at that too.

I have an endless number of network sockets in the house and I use them too. But if it's only about distributing internet, Wi-Fi is more than enough. If you plan it properly, it will never drop below internet speed. My last apartment was right in the city center and I saw about 30 other Wi-Fi networks around me, yet it was more than enough to distribute multiple Netflix streams. Nevertheless, today I would have Ethernet installed in every room just for resale considerations alone. It costs little and who knows what it might be used for someday.

What do you understand by network technology?

It's about "structured cabling". Simply put, this means not just connecting, for example, the two wires needed for the telephone* at a socket out of the eight-wire cable, but always all of them. This way, thanks to the "same denominator" (each connector format Western RJ45), you can connect any devices, telephone or PC etc., and switch them to each other at a patch panel in the main distribution frame.

Sockets for this exist externally identical in various qualities, those for "ISDN" have only connections for four wires; those for "network" have connections for all eight wires and also shielding, which is especially important at higher data speeds. Therefore, "network sockets" are recommended.
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Also to you: why should (not) advise the builders?
I don't understand the whole thing!
Does the house work without it or how or what not, or what is meant?

What builders should not be advised is to adopt Karsten's individual attitude as a standard.

The house will work even if you have an old-fashioned single (TAE) socket installed for your telephone.

However, one may not want to spoil their beautiful new house with cable clips and/or cable clutter crammed behind the TV. In this respect, considering that since CeBit 2022 the freezer itself reorders pizza, a network connection also belongs in the pantry and basically the whole house should be perforated with empty conduits

Whoever thinks this is exaggerated will still go on living.
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*) Analog telephones require only the first pair, ISDN devices pairs 1 and 2, Ethernet LAN pairs 1 and 3, and Gigabit Ethernet LAN all four pairs. The "LCM" therefore is all four pairs, only then is the cabling universal.

It's about "structured cabling". This simply means not just connecting, for example, the two wires that the telephone needs* on a socket from eight-wire cables, but always all of them.

Sorry, but that is completely wrong. Structured cabling is something entirely different and is certainly not implemented in a single-family house. Or do you recommend control cabinets for each floor and fiber optic cables for connecting the control cabinets, etc? It has little to do with the assignment of the sockets at first.

Structured cabling is something completely different and is certainly not carried out in a single-family house.

Homebuilders (and even worse: renovators) are hardcore junkies when it comes to patch panels and Cat.7 cables. With medium-sized companies, people still have to drill thick boards, and much more often established cabling remains. Private users also dominate the topic in electronics forums.

It has little to do with the assignment of the sockets at first.

Well then - please: I am looking forward to your explanation(s).

A kitchen radio does not need its own network cable from me, that's what FM is for.

If I worry that the toaster can "only" be connected via Wi-Fi and not via its own cable, then there are quite different problems in one's life.

Stationary desktop PCs are becoming rarer and rarer. Smart devices (including the toaster) are usually connected via Wi-Fi, that's just how it is.

RJ45 connectors reduce the performance of your Cat7; actually, you would need different connectors for this, but that's more something for the future. Cat6 would be just as good according to the current state of technology.

There are already many threads on exactly this topic that all offer a very similar discussion as this one. Feel free to use the search function.

To stay realistic and to help the thread creator again:
- some good points have already been made
- consider where stationary devices could be located (e.g. PC, TV)
- consider where you want Wi-Fi everywhere, what signal strength in the worst case, and how you can cover it (a Wi-Fi transmitter (whether a router or an access point) only manages the next floor with significant signal loss and the corners may then no longer have signal)
- if you want full coverage, you need a Wi-Fi access point on each floor
- where should it be located?
- each Wi-Fi access point requires its own network cable
- if Wi-Fi access points are not possible due to lack of cables, then Wi-Fi repeaters would have to serve as an emergency solution or a LAN over the powerline is established
- both are an absolute disgrace for a new building due to poor planning
- all network cables are centrally gathered in the connection room into a patch panel
- via a switch next to the patch panel, all cables can be connected into one network
- either you also have a modem next to it that feeds the "Internet" into the network via the switch
- or (as we do) we have two network cables running parallel into the kitchen, one serves as a relay from the TAE to the Wi-Fi router, which stands in the kitchen, the other leads the signal back to the switch/patch panel and feeds the network
- everywhere a network cable comes out, you can then connect, for example, TV, PC, or Wi-Fi access point
- whether you need 2 LAN sockets in each room depends, for example, on whether you want both a PC and TV to be able to be connected in the children's room, or if you don't care.
- it doesn't hurt (apart from the wallet)
- network cabling by the electrician is usually very expensive quotes
- but you "only" need empty conduits, network double sockets, and cables
- material costs for network cabling without devices for a single-family house are < 500€ (prices see Amazon)
- labor effort (measured by our own work) < 20 hours (for one person)