Multiple choice

Which telephone system is substantially cheap?

  1. Cell phone

  2. Net telephone

  3. Wireless telephone

  4. Land phone
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Net telephone (VoIP) uses internet infrastructure to transmit voice calls, which is significantly cheaper than traditional telephone systems because it avoids dedicated phone networks and long-distance carrier charges. Cell phones, wireless phones, and land phones all rely on more expensive switched network infrastructure that requires ongoing maintenance and per-minute charges.

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