Az internetszolgáltató telepíti a modemet.

Both a and az mean the in Hungarian.

• a is used before a consonant sound
• az is used before a vowel sound

Since internetszolgáltató begins with i, Hungarian uses az:

• az internetszolgáltató = the internet provider

This is similar to the difference between a and an in English, although Hungarian uses it only for the definite article.

Yes. Hungarian very often forms long compound nouns and writes them as a single word.

Here it breaks down like this:

• internet = internet
• szolgáltató = provider, service provider

So:

• internetszolgáltató = internet service provider

This is very normal in Hungarian. English often uses separate words where Hungarian prefers compounds.

Because modemet is the direct object of the sentence, and Hungarian marks direct objects with the accusative ending -t.

So:

• modem = modem
• modemet = modem + accusative ending = the modem as the thing being installed

The extra -e- appears to make pronunciation easier. Hungarian often inserts a linking vowel before certain endings.

Compare:

• kép → képet
• modem → modemet

So the important point is that -t marks the object.

This is a very important Hungarian grammar point.

Hungarian verbs have two main conjugation patterns:

• indefinite conjugation
• definite conjugation

Here, the object is definite:

• a modemet = the modem

Because the object is definite, the verb uses the definite conjugation:

• telepíti = he/she/it installs it / installs the ...

If the object were indefinite, you would use telepít instead:

• Az internetszolgáltató telepít egy modemet. = The internet provider installs a modem.

So in your sentence:

• telepíti matches the definite object a modemet

Telepíti is:

• third person singular
• present tense
• definite conjugation

So grammatically it means:

• he/she/it installs it
• or more naturally in context, the internet provider installs the modem

Like the English present tense, Hungarian present tense can sometimes also be used for near future or scheduled actions, depending on context.

Usually in modern everyday usage, telepít means to install or to set up, especially for:

• software
• devices
• internet equipment
• technical systems

In this sentence, telepíti a modemet is best understood as:

• installs the modem
• or sets up the modem

So yes, install is the most natural meaning here.

Yes, Hungarian word order is much more flexible than English word order. It often changes to show topic, focus, or emphasis.

This version is a neutral, natural sentence with:

• Az internetszolgáltató as the topic
• telepíti a modemet as the comment about it

So it feels like:

• As for the internet provider, it installs the modem

You can change the word order, but the emphasis changes too. For example:

• A modemet az internetszolgáltató telepíti.

This puts more focus on a modemet, roughly like:

• It is the modem that the internet provider installs
• or The modem is what the internet provider installs

So the sentence you were given is the most neutral/basic version.

Because both refer to specific, identifiable things.

• az internetszolgáltató = the internet provider
• a modemet = the modem

Hungarian uses the definite article very regularly, often in places where English also uses the.

Also, the definiteness of a modemet is important because it affects the verb form:

• a modemet → definite object
• therefore telepíti → definite conjugation

So the article is not just vocabulary; it also connects to the grammar of the verb.

A few key pronunciation points:

• sz is pronounced like English s
• s is pronounced like English sh
• z is like English z
• á is a long a sound
• í is a long ee sound

So:

• szolgáltató begins with s as in see, not sh
• telepíti ends with a long ee sound in -í-

A rough pronunciation guide:

• Az internetszolgáltató telepíti a modemet
• roughly: awz in-tehr-net-sol-gaa-ltaa-too te-leh-pee-tee aw mo-deh-met

Not exact, but close enough to help.

Also, Hungarian stress is usually on the first syllable of each word:

• AZ internetszolgáltató
• TElepíti
• A modemet

Yes. That would also be grammatical, but the meaning would be less specific.

• Az internetszolgáltató telepít. = The internet provider is installing / installs.

Here, the action is mentioned, but not exactly what is being installed.

Once you add a definite object:

• Az internetszolgáltató telepíti a modemet.

the sentence becomes more specific, and the verb changes to the definite form telepíti.

So the presence of a modemet affects both the meaning and the verb form.