Understanding Mobile Devices

Question 1

Traditional practice of making and selling a product without telling anyone how you made it

Answer 1

Closed Source

Question 2

Closed-source product or technology that has something that doesn’t use common, open standards

Answer 2

Proprietary/Vendor-Specific

Question 3

The maker releases the instructions for making it

Answer 3

Open Source

Question 4

Apple’s closed-source mobile OS that runs on iPhone and iPad

Answer 4

iOS

Question 5

Apple’s closed-source watch OS

Answer 5

WatchOS

Question 6

Google’s open-source platform, based on Linux

Answer 6

Android

Question 7

All mobile OSes have one. Means you interact with them by accessing icons on the screen

Answer 7

Graphical User Interface (GUI)

Question 8

Measures movement in slace

Answer 8

Accelerometer

Question 9

Maintain proper orientation of up and down

Answer 9

Gyrometer

Question 10

The ability to make phone calls over Wi-Fi

Answer 10

Wi-Fi Calling

Question 11

Use these to create custom apps or add features to existing apps on the device. Used to write apps.

Answer 11

Software Development Kit (SDK)

Question 12

A package file containing the assets compiled from an Android app’s code, then used to install the app on an Android device

Answer 12

Android Application Package (APK)

Question 13

Feature that enables smartphones to receive broadcasts from national broadcast systems, such as the Emergency Alert System (AES) in the US

Answer 13

Emergency Notification

Question 14

Feature in which the app connects to your bank information and automatically transfers the funds from your bank to the merchant

Answer 14

Mobile Payment Service

Question 15

A switch (either an actual hardware switch located on the mobile device or a software switch that can be located in the device’s configuration settings) that turns off all cellular and wireless services, including BlueTooth

Answer 15

Airplane Mode

Question 16

Feature in which the app connects to your bank information and automatically transfers the funds from your bank to the merchant

Answer 16

Mobile Payment Service

Question 17

A switch (either an actual hardware switch located on the mobile device or a software switch that can be located in the device’s configuration settings) that turns off all cellular and wireless services, including Bluetooth

Answer 17

Airplane Mode

Question 18

A priority-ordered list of the other carrier networks and frequencies it should search for when it can’t locate its home carrier’s network. Only for CDMA networks

Answer 18

Preferred Roaming List (PRL)

Question 19

Updates to the PRL that are sent via the phone’s cellular connection

Answer 19

Baseband/Over-the-Air Updates

Question 20

Updates on CDMA devices which modify a host of complex device settings. Carriers use these to ready the device for deployment on their networks, enable the network to route calls or messages to the device, and more

Answer 20

Product Release Instruction (PRI)

Question 21

A 15-digit number used to uniquely identify a mobile device. Unique to devices using the Global System for Mobile Communication (GSM) family of technologies, including its present-day descendants: 4G LTE and LTE-Advanced

Answer 21

International Mobile Equipment Identity (IMEI)

Question 22

Number that uniquely identifies a SIM

Answer 22

Integrated Circuit Card Identifier (ICCID) number

Question 23

Contains information unique to the subscriber (the owner of the phone), and is used to authenticate the subscriber to the network. Can be moved from phone to phone, usually with no problems

Answer 23

Subscriber Identity Module (SIM)

Question 24

Number that is also included on the SIM, but represents the actual user associated with the SIM. Not normally accessible from the phone, but is usually available from the carrier to ensure that stolen phones are not misused. Can be used to unlock a phone

Answer 24

International Mobile Subscriber Identity (IMSI)

Question 25

Uses VPN devices on both ends of the connection, configured to communicate only with each other, while the hosts on both ends use their respective. VPN concentrators as a gateway. This arrangement is usually transparent to the users at both sites; hosts at the other site appear as if they are directly connected to the user’s network

Answer 25

Site-to-Site VON

Question 26

One of the most popular ways to create a VPN; uses UDP port 1701 and must be opened on packet-filtering devices. In this form of VPN, users connect to the corporate network and can use all of their typical applications, such as their email client, and can map shares and drives as they would if they were actually connected onsite to the corporate infrastructure

Answer 26

Layer 2 Tunneling Protocol (L2TP) and Ipsec

Question 27

Uses TCP port 443 and is typically used through a client’s Web browser, they don’t normally require any special software or configuration on the client itself, but they don’t give the client the same direct access to resources on the corporate network. Users may have to access these network resources through the client browser via an access portal

Answer 27

Secure Sockets Layer (SSL)/Transport Layer Security (TLS)

Question 28

A wonder of miniaturization combining a CPU, GPU, and sundry other support logic onto a single silicon die, saving a lot of space and power in the process. Rarely Intel x86 based, most likely to run on ARM architecture chip

Answer 28

System on a Chip (SoC)

Question 29

Uses TCP port 110

Answer 29

POP3

Question 30

Uses TCP port 143

Answer 30

IMAP4

Question 31

Uses TCP port 25

Answer 31

SMTP

Question 32

Standard used to configure digital signature settings for email

Answer 32

Secure/Multipurpose Internet Mail Extensions (S/MIME)

Question 33

Enables mobile devices to keep up to date with a lot of essential information. Types of data typically included: contacts, programs/apps, email, pictures, music, videos, calendar info, bookmarks, documents, location data, social media data, e-books, and passwords

Answer 33

Synchronization

Question 34

A Microsoft protocol used to synchronize Microsoft Exchange email, contacts, and calendars that has become widely used across a range of mobile OS platforms and hardware vendors, including Apple and Android devices

Answer 34

Exchange ActiveSync (EAS)

Question 35

Apple’s proprietary 8-pin connector that replaced the 30-pin connector. Can be inserted without regard to proper orientation. Licensed to other manufacturers through the Made for iPhone (MFi) program

Answer 35

Lightning Connector

Question 36

Uses chips embedded in mobile devices that create electromagnetic fields when these devices are close to each other. Typical range is anywhere from a very few centimeters to only a few inches

Answer 36

Near Field Communication (NFC)

Question 37

Largely replaced by other, faster tech (BlueTooth, 802.11 wireless). Was previously used to transfer data between mobile devices. Used to create the first real personal area networks (PANs)

Answer 37

Infrared (Ir)

Question 38

Standard that requires line of sight, meaning that devices have to be directly facing each other, requires very short distances between devices, and has very slow data rates

Answer 38

Infrared Data Association (IrDA)

Question 39

A small device that shares access to cellular technologies such as 3G, 4G, and 4G LTE via Wi-Fi. Basically a wireless router that routes traffic between Wi-Fi devices and broadband technologies, providing wireless access for up to five to ten devices at a time

Answer 39

Mobile Hotspot