ITPEC FE Subject A October 2024 Question 26
Which of the following is the way of using a phone to supply an Internet connection to other devices, such as a tablet or laptop computer over either Wi-Fi or Bluetooth?
Explanation
Tethering — sharing a phone's mobile data connection with other devices over Wi-Fi, Bluetooth or USB.
With tethering the smartphone acts as a small router: it keeps its cellular connection to the carrier and lets a tablet or laptop reach the Internet through it. The Wi-Fi form is often labelled "personal hotspot" on the phone, but the practice of using the phone this way is tethering.
Answer (c)
Why not others:
- •(a) Dedicated mobile hotspots — a separate pocket router with its own SIM whose only job is sharing a mobile connection; the question is about using a phone
- •(b) PPPoE — PPP over Ethernet, a protocol that authenticates and carries a broadband (DSL or fibre) connection to an ISP
- •(d) UPnP — Universal Plug and Play lets devices on a LAN discover each other and, for example, open router ports automatically; it does not supply an Internet connection
Key rule: Tethering = a phone shares its own Internet connection; a dedicated mobile hotspot = a separate device built only for that.
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