Space practice questions.

A European university stores student records with a cloud provider whose data centre is in the same country, but whose parent company is incorporated elsewhere. Why does the location of the servers not settle which law applies?

• the parent company remains reachable by its own state's law
• encrypted data is exempt from all national legal processes
• data centres are treated as extraterritorial under UN rules
• the location of a server has no bearing on any legal question

Answer: the parent company remains reachable by its own state's law

Jurisdiction attaches to people and companies as well as to places, so an order can be served on the parent while the disks never move. This is why data protection authorities examine corporate structure and transfer mechanisms rather than accepting a map of buildings as an answer.

In 2019 the Court of Justice of the EU held that a search operator ordered to de-reference a result under EU data protection law is not obliged to do so on all of its domains worldwide. Which tension about digital space does the ruling illustrate?

• search results are technically impossible to remove once published
• national courts have no authority over foreign search operators
• de-referencing removes the underlying page from the web for everyone
• a global service is governed by territorially bounded law

Answer: a global service is governed by territorially bounded law

The service is reachable from anywhere, but the right being enforced comes from one legal order, so the remedy stops at that order's edge and the result stays visible from outside it. De-referencing also never deletes the source page, which is a distinction candidates routinely lose.

A trading firm pays an exchange to house its servers in the same building as the exchange's matching engine, a few metres away. Which property of digital space does that arrangement exploit?

• the exchange charges lower fees to customers housed nearby
• national law applies only to firms inside the exchange building
• distance still costs time, because a signal travels at a finite speed
• data held on the exchange's own site is exempt from disclosure orders

Answer: distance still costs time, because a signal travels at a finite speed

Networks feel instantaneous, yet a signal in fibre covers only about 200 kilometres per millisecond, so a few metres of cable decide who sees a price first. Colocation is sold at a premium for exactly that reason, which is a reminder that digital services are placed rather than placeless.

A subscriber travelling in another country finds that part of her streaming catalogue is missing because the service checks the country of her connection. Which practice is that?

• data localisation, which fixes where records must be stored
• geoblocking, which restricts access by detected country
• content delivery caching, which copies files closer to users
• network address translation, which shares one public address

Answer: geoblocking, which restricts access by detected country

The practice enforces licensing deals, tax rules or censorship on a network that was not designed around borders, which is why catalogues differ between countries for the same subscription. It also creates the market for circumvention tools, so the border is porous rather than absolute.

In February 2024 three submarine cables in the Red Sea were damaged and traffic between Asia and Europe had to be rerouted while repairs took months. Which property of internet geography does the episode illustrate?

• cable faults cannot be located once a cable has been laid
• traffic between Asia and Europe otherwise travels by satellite
• a few narrow corridors carry most traffic between regions
• damaged cables are replaced automatically by spare cables

Answer: a few narrow corridors carry most traffic between regions

Maps of the internet look like a mesh, but intercontinental routes funnel through a handful of straits and landing points, so one incident in a single corridor raises delay for a whole region. Repair depends on cable ships and permits, which is why the effect lasts far longer than a software fault.

Low-earth-orbit satellite constellations have sold consumer broadband since 2020 in places with no fixed infrastructure. Which spatial constraint does the technology most directly relax?

• the effect of a country's law on what the service may carry
• the cost of laying cable to remote and low-density places
• the need for a licence to operate in a national market
• the delay caused by the distance between a user and a server

Answer: the cost of laying cable to remote and low-density places

The constellation removes the last-mile economics that leave scattered populations unserved, because the cost of the space segment does not rise with how far apart the users are. It does not remove national licensing or the physics of distance to a distant server, so it changes who can be reached rather than what the law allows.