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Network Technologies & Connectivity Flashcards

7 cards from real CMT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Network Technologies & Connectivity flashcards as text

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

    Answer: Network congestion in the cell sector

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

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

    Answer: 2.4 GHz

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

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

    Answer: Multiple Input Multiple Output

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

  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?

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

    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.

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

    Answer: Defines the gateway between the carrier network and the internet

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

  6. Which Bluetooth version introduced Low Energy (BLE) as a core feature?

    Answer: Bluetooth 4.0

    Bluetooth 4.0 introduced Bluetooth Low Energy (BLE), enabling long battery life for IoT and fitness devices.

  7. A phone fails to maintain a Bluetooth connection beyond 3 feet despite the paired device being within 30 feet. After ruling out software issues, what should the technician inspect?

    Answer: Bluetooth antenna and its coaxial connector

    Severely limited Bluetooth range is a classic symptom of a disconnected or damaged Bluetooth antenna or its coaxial snap connector inside the device.