WorksheetsCHAPTER 21 COMPTIA 21 A+
Total questions: 20
Worksheet time: 40mins
Which of the following is not a difference between iOS and Android?
Android is not a proprietary operating system.
You can download iOS apps from only one place.
You can make a cellular phone call from all Android devices.
It costs more to be a developer of iOS apps.
You want to create an Android application. Which of the following do you need to download and use?
APK
IPA
SDK
SPK
Bob’s iPhone 4S cannot detect when he turns his device to the left and right like it’s a steering wheel. Games and other apps that require this motion will not work correctly as a result. Which component has failed in Bob’s phone?
Gyroscope
Accelerometer
Magnetometer
GPS
Which of the following is more likely to be associated with a resistive touchscreen versus a capacitive one?
You won’t have to apply as much pressure.
You will need to recalibrate it.
You will have to clean it more often for optimal functionality.
You can use the pad of your finger instead of your fingernail.
Which of the following are text-messaging services used with mobile devices? (Choose two.)
SMS
SIP
Androtext
iOS Messaging
MMS
Which of the following is not a valid reason to disable cellular data networking?
You have a limited amount of data in your monthly plan.
You have access to a reliable Wi-Fi signal.
You are about to download an update to your phone.
Your phone calls are going out over your carrier’s cellular network.
Which of the following is a characteristic of Bluetooth?
Bluetooth connections support wireless device control but not file transfers.
Bluetooth is not yet a fully standardized protocol.
Bluetooth connections do not reach as far as Wi-Fi connections.
You must reboot paired devices to complete connection establishment
What is the default TCP port number for SMTP?
25
110
143
995
Which mail protocol commonly uses TCP port 587?
SMTP with SSL
SMTP with TLS
IMAP4 with SSL/TLS
POP3 with SSL/TLS
You have enabled Wi-Fi calling on your new mobile device. You are on a cellular call within your Wi-Fi network’s range and you lose the cellular signal. What happens to your call?
It gets dropped.
It will seamlessly switch over to Wi-Fi.
The phone will beep at you and then switch to Wi-Fi.
The phone will beep at you, and you need to tap Confirm to switch to Wi-Fi.
Which technology built into some mobile phones allows for the user to pass the phone close to a receiver to make an electronic payment, without the phone touching the receiver?
Bluetooth
APC
RPS
NFC
Which two communications technologies can you use to create a VPN connection?
Bluetooth
Wi-Fi
Cellular
NFC
Which software component of a mobile phone is responsible for managing all wireless communications?
Either iOS or Android OS
SIM OS
Baseband OS
Wireless OS
Which two of the following are examples of RTOSs?
SIM OS
Baseband OS
iOS
Android
Which standard is used to encrypt and decrypt email messages on mobile devices?
SSL
TLS
MMS
S/MIME
Which of the following are universally common items that are synced between a mobile device and a larger computer? (Choose three.)
Office documents
Contacts
Operating system files
APPS
Which of the following is not a requirement for installing iTunes on a Windows machine?
A 1GHz processor or better
1GB of RAM or higher
400MB of available disk space
Broadband Internet connection
Which of the following statements about configuring email access on a mobile device is true?
Most Internet mail services offer an Exchange option.
The TCP ports used for configuring access are usually standard port numbers.
Most ports used for access are UDP ports.
You must download third-party apps for connecting to email services.
Which of the following are disabled when airplane mode is switched on? (Choose all that apply.)
Cellular
Wi-Fi
Bluetooth
NFC
Settings app
You have a Verizon 4G mobile phone that you want to use as a mobile hotspot. How many connections are you allowed to support simultaneously on that device?
3
5
10
20
