1.3 Given a scenario, set up & configure accessories & ports of mobile devices

Question 1

What connectors do headsets use?

Answer 1

3.5mm audio jack or USB/lightning

Question 2

What connector do modern Android phones use?

Answer 2

USB-C

Question 3

What connetor do older Android phones use?

Answer 3

Micro- or Mini-B USB

Question 4

What connector do most iPhones & iPads use?

Answer 4

Lightning

The latest iPads & iPhones use USB-C

Question 5

What is one of the oldest & simplest computer interfaces?

Answer 5

Serial interfaces

Question 6

What are serial interfaces often used for?

Answer 6

Programming & connectivity with some types of peripheral device

Question 7

What is the serial software interface called?

Answer 7

UART port

UART = Universal Asynchronous Receiver Transmitter

You do not need to know the acronym

Question 8

How can UART interface data be transferred on android?

Answer 8

Over a USB port or via bluetooth

For bluetooth, SPP or BLE is used, which enables serial communication over Bluetooth

Question 9

How can UART interface data be transferred on Apple devices?

Answer 9

Via Lightning port only if the device is enrolled in the developer program

Question 10

What is a common use case for serial interfaces?

Answer 10

To connect a laptop to serial port of a managed switch/router

Since most laptops no longer have 9-pin RS-232 ports, these connections use special adapter cables that connect to a laptop’s USB or RJ45 port

Question 11

Meaning of NFC?

Answer 11

Near-Field Communication

Question 12

What does NFC allow?

Answer 12

Short range data transmissions

The achievable data rates are low, but the transactions involve small data exchanges.

Question 13

Max range of NFC data transmissions?

Answer 13

20cm/8in

Question 14

What enables mobile payments at contactless PoS machines?

Answer 14

NFC

Question 15

How can mobile devices be configured for NFC mobile payments?

Answer 15

Entering credit card info into the device’s wallet app

Question 16

What happens when a wallet app is used for NFC payments?

Answer 16

one-time token is sent to the merchant linked to the customer’s account for processing

Wallet apps use tokens. They dont tranmist the original credit card info

Question 17

3 major wallet apps?

Answer 17

• Apple Pay
• Google Pay (formerly Android Pay)
• Samsung Pay

Some PoS readers may only support a particular type of wallet app(s)

Question 18

What else can NFC be used for besides NFC payments?

Answer 18

Configuring other types of connections

i.e. Pairing Bluetooth devices (i.e. if a phones & headset support NFC, tapping the headset will automatically negotiate a Bluetooth connection)

Question 19

Purpose of port replicators?

Answer 19

To provide a variety of ports

For devices like keyboards, monitors, network connections, mice, etc.

Question 20

Do port replicators add functionality to laptops?

Answer 20

No

Question 21

What is a docking station?

Answer 21

Sophisticated port replicator with media bay for add-in cards/drives

When docked, a laptop functions like a desktop and gains additional features, such as expansion card support.

Question 22

What do docking stations now usually refer to?

Answer 22

Port replicators

Docking stations with media bays & adapter card support are no longer common