CMT Network Technologies & Connectivity 2

Question 1

A customer's phone shows full LTE bars but data speeds are extremely slow. What is the most likely cause?

Accepted Answer

Network congestion in the cell sector

Answer

Full signal bars with slow data typically indicate network congestion where many users share the same cell sector bandwidth.

Question 2

Which Wi-Fi frequency band offers the longest range but lowest throughput?

Accepted Answer

2.4 GHz

Answer

The 2.4 GHz band has better wall penetration and longer range than 5 GHz or 6 GHz, but offers lower maximum throughput.

Question 3

What does MIMO stand for in the context of wireless networking?

Accepted Answer

Multiple Input Multiple Output

Answer

MIMO (Multiple Input Multiple Output) uses multiple antennas to send and receive more data simultaneously, improving throughput and reliability.

Question 4

A technician replaces a phone's Wi-Fi antenna flex cable. After reassembly, the device connects to 2.4 GHz but not 5 GHz. What is the most likely issue?

Accepted Answer

Only one antenna connected — 5 GHz requires dual-band antenna

Answer

Many phones use separate antenna paths for 2.4 GHz and 5 GHz; if the secondary antenna or its connector is missed during reassembly, 5 GHz fails.

Question 5

What is the primary purpose of an Access Point Name (APN) on a mobile device?

Accepted Answer

Defines the gateway between the carrier network and the internet

Answer

The APN specifies the carrier's gateway settings that allow the device to connect to the correct data network and services.

(CMT) Certified Mobile Tech Practice Test

(CMT) Certified Mobile Tech Practice Test

CMT Network Technologies & Connectivity 2