CompTIA Network+ (N10-008) — Question 475

A Chief Executive Officer (CEO) of a company purchases a new phone that will be used while traveling to different countries. The CEO needs to be able to place outgoing calls and receive incoming calls on the phone using a SIM card. Which of the following cellular technologies does the CEO’s phone need?

Answer options

• A. WDMA
• B. CDMA
• C. GSM
• D. SLA

Correct answer: C

Explanation

The correct answer is C, GSM, which is a widely used standard for mobile networks that allows for SIM card usage, enabling international roaming and call functionality. Options A (WDMA) and D (SLA) are not applicable technologies for cellular communication, while B (CDMA) lacks SIM card support, making it unsuitable for this scenario.