CompTIA A+ | Accessories, Connections, Bluetooth & MDM

USB-C

Reversible connector that handles data, charging, and video.

Lightning

Apple’s proprietary connector on older iPhones (newer iPhones use USB-C).

Micro-USB

Older connector common on older Android phones and accessories.

Docking station

Connects a laptop to monitors, peripherals, network, and power through one connection. Adds extra ports.

Port replicator

A simpler dock that copies the laptop’s existing ports for easy connection.

Stylus/touch pen

Pen used for precise input on touchscreens.D

Drawing pad

Touch-sensitive pad used with a stylus for drawing and design.

Hotspot

Shares a phone’s cellular data with other devices over Wi-Fi.

Tethering

Sharing a phone’s internet connection with another device over USB or Bluetooth.

NFC (Near Field Communication)

Very short-range wireless (a few centimeters). Used for tap-to-pay and quick pairing.

Bluetooth

Short-range wireless (about 10 meters) for connecting devices like headphones, keyboards, and speakers.

Bluetooth pairing steps

Turn on Bluetooth, put the device in discoverable mode, select it, enter or confirm the PIN, then test.

A Bluetooth device won’t connect. What should you check?

That Bluetooth is on, the device is in discoverable mode and in range, its battery is charged, and try re-pairing.

MDM (Mobile Device Management)

Software that lets a company centrally manage and secure mobile devices: push apps, enforce policies, configure email, and remotely wipe.

BYOD (Bring Your Own Device)

Employees use personal devices for work. MDM can keep work data separate from personal data.

Remote wipe

Erases a lost or stolen device’s data remotely. Done through MDM.

An employee loses a company phone with sensitive data on it. What should IT do?

Remotely wipe it using MDM.

A user wants to connect their laptop to two monitors, a keyboard, and the network with one cable at their desk. What do they need?

A docking station.

A user needs internet on their laptop while traveling with no Wi-Fi available. What can they use?

Their phone’s hotspot (or tethering).

Mini-USB

Older, slightly larger predecessor to Micro-USB. Found on older cameras and devices.

Track point

Small pointing stick in the middle of some laptop keyboards (between G, H, and B) used to move the cursor.

Headset

Headphones with a built-in microphone. Connects by USB, Bluetooth, or audio jack.

MDM corporate device configuration

Company-owned devices that IT fully controls and configures.

MDM BYOD configuration

Personal devices enrolled in MDM, where IT manages only work apps and data, not the whole device.

MDM policy enforcement

Using MDM to require security rules like passcodes, encryption, and app restrictions.

MDM corporate applications

Work apps that IT pushes to devices remotely through MDM.

A company wants to require a passcode and encryption on all employee phones. What tool enforces this?

MDM (policy enforcement)