1.2 Compare and contrast accessories and connectivity options for mobile devices.
Objective 1.2 sits in Mobile Devices, which carries 13% of the A+ Core 1 exam. The questions below are original, written from the official objective title above, and each explanation cites the CompTIA page it rests on.
Objective title verbatim from the official objectives. CompTIA exam page ↗
A worked example
Shown solved, with the whole explanation open: this is what every question here carries.
A customer holds their smartphone near a point of sale terminal, and a payment completes without any card swipe or button press. Which short range wireless technology enables this transaction?
The concept
A tap payment works because two antennas couple only when they are a few centimetres apart. The proximity itself stands in for the pairing step, which is why nothing has to be selected or confirmed on the phone first.
Why this answer
The transaction completes just by holding the phone near the terminal with no manual pairing step, which is the defining behavior of NFC.
- Correct: coupling at this distance is what the terminal is built to detect.
- BBluetooth requires an explicit pairing process and works over a longer range than what is described.
- CUSB requires a physical cable connection, which is not present in this scenario.
- DWi-Fi connects devices to a network and does not describe a tap based exchange between two devices.
Now you: objective 1.2 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
A laptop has two USB ports and no built-in Ethernet port. The employee needs one connection that adds video output, an Ethernet port, and extra USB ports beyond what the laptop already has. Which accessory meets this need?
Sample question 2 of 3
A user wants to connect a wireless keyboard to a tablet for the first time. Before the devices can exchange data, both devices must be set to which mode so they can find each other?
Sample question 3 of 3
A laptop user often rests their palm on the trackpad while typing, causing the cursor to jump and text to be entered in the wrong place. Which setting should the technician adjust to resolve this?
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Continue practicingRead the sources
These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.