SY0-701 Question 264
Single answerConnection methods: Cellular , Wi-Fi , BluetoothA security administrator is deploying tablets for field technicians who work in customer buildings and remote outdoor sites. The tablets must support internet access when no corporate Wi-Fi is available, connect to small diagnostic sensors at short range, and minimize the risk of unauthorized network access when technicians are near public hotspots. Which of the following connection methods BEST meets these requirements?
- A
Use Wi-Fi for internet connectivity everywhere and Bluetooth for connecting to the diagnostic sensors
- B
Use cellular for internet connectivity outside trusted locations and Bluetooth for connecting to the diagnostic sensors
- C
Use Bluetooth tethering for internet connectivity and Wi-Fi Direct for connecting to the diagnostic sensors
- D
Use open public Wi-Fi for internet connectivity and NFC for connecting to the diagnostic sensors
Show answer and explanation
Correct answer: B
Explanation
The best answer is to use cellular for internet access outside trusted locations and Bluetooth for short-range sensor connectivity. In real-world enterprise deployments, cellular is often preferred for field users who need connectivity without depending on unknown Wi-Fi infrastructure. This reduces the risk of connecting to rogue access points or evil twin networks, which are common wireless threats covered in Security+ objectives. Bluetooth is the appropriate short-range wireless technology for connecting to nearby peripherals and low-power diagnostic devices. Wi-Fi remains useful on trusted internal networks, but in this scenario the requirement specifically emphasizes reducing risk near public hotspots, making cellular the stronger choice. This aligns with common security best practices from enterprise mobile deployment guidance and wireless security recommendations, including using trusted networks, avoiding untrusted open wireless access, and selecting connection methods based on range, purpose, and attack surface.
- A. Incorrect.
This is incorrect because relying on Wi-Fi everywhere does not best minimize the risk of unauthorized network access near public hotspots. Wi-Fi is appropriate on trusted corporate networks, but field technicians in untrusted environments could be exposed to rogue access points, evil twin hotspots, or insecure public wireless networks. Bluetooth is appropriate for short-range sensor connections, but the internet connectivity choice is not the best fit for the stated security requirement.
- B. Correct.
This is correct because cellular provides wide-area network connectivity without requiring the technician to join nearby Wi-Fi networks, which reduces exposure to malicious or spoofed hotspots in public locations. Bluetooth is designed for short-range peripheral and device-to-device communication, making it a practical choice for pairing with nearby diagnostic sensors. This combination best aligns with the business need for secure remote connectivity plus short-range device communication.
- C. Incorrect.
This is incorrect because Bluetooth tethering is generally not the best primary method for internet connectivity in this scenario. It is shorter range, typically used to share an existing connection from another device, and is less practical than native cellular for deployed field tablets. Wi-Fi Direct can connect devices peer-to-peer, but small diagnostic sensors commonly use Bluetooth for low-power, short-range communication rather than Wi-Fi Direct.
- D. Incorrect.
This is incorrect because open public Wi-Fi increases risk significantly and conflicts with the requirement to minimize unauthorized network access near public hotspots. NFC is also not the best answer for connecting to ongoing diagnostic sensors because NFC is extremely short range and is commonly used for tap-to-pair, payments, or small data exchanges rather than sustained sensor communication.