WGU C844 EXAM TEST PAPER 2026
UPDATED TEST BANK SOLVED QUESTIONS.
⫸ What is the Subscriber Identity Module (SIM) card? Answer: It is
a small, detachable smart card that fits into a standardized card slot on
the phone. It contains all the subscriber's information, as well as their
contacts list. Not only did SIM cards help to address the 1G system's
cloning vulnerability, they also allowed users to switch phones
without carrier involvement. This led to the emergence of third-party
phone retailers who could (and did) sell phones directly to consumers.
⫸ What is the General Packet Radio Service (GPRS)? Answer: It
was the first packet-switching technology method that allowed data
sharing over mobile networks. Still considered a 2G technology but
often called 2G+ or 2.5G, GPRS allowed access to some websites—
although data rates proved to be too slow for what was becoming a
growing need and expectation.
⫸ What is EDGE? Answer: It was an AT&T rolled out service in
2003, and which other carriers quickly offered, represented an
enhancement over GPRS. It offered high data rates through better data
encoding and (at that time) viable data access to many websites.
⫸ What about 3G? Answer: The most noticeable improvement in 3G
was its high-speed data rates. One enhancement to 3G was a mobile
protocol called High Speed Downlink Packet Access (HSDPA) which
improved data rate to an impressive 14 Mbps.
,⫸ What is 4G? Answer: 4G is an all-IP network, allowing the use of
ultra-broadband and the promise of 1 Gbps data rates. At that
throughput level, voice communications can be converted to Voice
over IP (VoIP) with high quality, high-definition TV can be streamed
to mobile devices, and a host of live interactive gaming applications
can be enjoyed.
⫸ What are the two systems currently deployed for 4G? Answer:
The two systems currently deployed for 4G are Mobile Worldwide
Interoperability for Microwave Access (WiMAX) and Long-Term
Evolution (LTE)
⫸ What was the initial system to set up calls and mobile data
sessions? Answer: Previous systems used a signaling system called
Signaling System 7 (SS7) to set up calls and mobile data sessions.
⫸ What was the replacement for SS7 in 4G? Answer: 4G uses a
signaling protocol called Diameter . Some critics say Diameter
sessions are potentially open to hijacking or having users' personal
information exposed, making it a less-than-ideal replacement for SS7.
⫸ What about 5G capabilities? Answer: 5G promises higher data
rates, lower latency, greater connection density, and improved
reliability. Two of the highly anticipated applications of 5G are
AR/VR mobile gaming and driverless vehicles.
,⫸ What was the Blackberry Enterprise Server (BES)? Answer: The
BES enabled Blackberry device to receive "push" emails from
Microsoft Exchange Server, which meant that users could send and
receive emails no matter where they were (assuming they had cell
coverage, which by then was nearly everywhere).
⫸ What is the CIA Triad? Answer: It is where the C-I-A refers to
confidentiality, integrity, and availability. That is, the information in
these setting must be private (confidentiality), accurate (integrity),
and reliable (availability).
⫸ Which technology makes it possible for several users to share
multiple frequency bands at the same time by spreading the signal out
over the frequencies? Answer: Code Division Multiple Access
(CDMA).
CDMA spreads the signal out over frequencies so several users can
share multiple frequency bands at the same time.
⫸ What is a sandbox? Answer: Android OS was designed to be
highly secure and isolated application runtimes in their own virtual
sandbox . What this means is that even if the user downloaded
malware, the application would run in complete isolation from other
apps or system resources.
⫸ What are Potentially Unwanted Applications (PUAs)? Answer:
Potentially Unwanted Applications (PUAs) , was also thriving.
Developers create PUAs in an attempt to monetize their applications
through connections to aggressive third-party advertising networks.
, ⫸ What are PUAs also called sometimes? Answer: Referred to as
mobile adware, or madware . On behalf of these third-party
advertisers, the madware collects location information and tracks the
device, perhaps even harvesting browser histories and contacts.
⫸ What is a heartbleed? Answer: Heartbleed vulnerability, which
was a huge hole in the security code in very popular open source
applications. This vulnerability existed for more than a decade and
was not widely known until it was publicly disclosed in 2014.
⫸ What are the different tools used to evaluate and exploit security
issues with Android.? Answer: AndroRAT —This tool, which can be
bound to other applications, can read messages and contacts, steal
data, view video, record calls, and more. This full framework of open
source tools is freely available and is constantly updated.
Android SDK —The Android software development kit (SDK) is the
official Android development tool. It enables developers to compile
and decompile applications for Android. This is an essential
development or research toolkit.
DroidBox —Another application for analyzing Android applications,
DroidBox can check for password hashes, check files for read/write
data, and record incoming and outgoing communications (SMS
messages and phone calls), among other things.
UPDATED TEST BANK SOLVED QUESTIONS.
⫸ What is the Subscriber Identity Module (SIM) card? Answer: It is
a small, detachable smart card that fits into a standardized card slot on
the phone. It contains all the subscriber's information, as well as their
contacts list. Not only did SIM cards help to address the 1G system's
cloning vulnerability, they also allowed users to switch phones
without carrier involvement. This led to the emergence of third-party
phone retailers who could (and did) sell phones directly to consumers.
⫸ What is the General Packet Radio Service (GPRS)? Answer: It
was the first packet-switching technology method that allowed data
sharing over mobile networks. Still considered a 2G technology but
often called 2G+ or 2.5G, GPRS allowed access to some websites—
although data rates proved to be too slow for what was becoming a
growing need and expectation.
⫸ What is EDGE? Answer: It was an AT&T rolled out service in
2003, and which other carriers quickly offered, represented an
enhancement over GPRS. It offered high data rates through better data
encoding and (at that time) viable data access to many websites.
⫸ What about 3G? Answer: The most noticeable improvement in 3G
was its high-speed data rates. One enhancement to 3G was a mobile
protocol called High Speed Downlink Packet Access (HSDPA) which
improved data rate to an impressive 14 Mbps.
,⫸ What is 4G? Answer: 4G is an all-IP network, allowing the use of
ultra-broadband and the promise of 1 Gbps data rates. At that
throughput level, voice communications can be converted to Voice
over IP (VoIP) with high quality, high-definition TV can be streamed
to mobile devices, and a host of live interactive gaming applications
can be enjoyed.
⫸ What are the two systems currently deployed for 4G? Answer:
The two systems currently deployed for 4G are Mobile Worldwide
Interoperability for Microwave Access (WiMAX) and Long-Term
Evolution (LTE)
⫸ What was the initial system to set up calls and mobile data
sessions? Answer: Previous systems used a signaling system called
Signaling System 7 (SS7) to set up calls and mobile data sessions.
⫸ What was the replacement for SS7 in 4G? Answer: 4G uses a
signaling protocol called Diameter . Some critics say Diameter
sessions are potentially open to hijacking or having users' personal
information exposed, making it a less-than-ideal replacement for SS7.
⫸ What about 5G capabilities? Answer: 5G promises higher data
rates, lower latency, greater connection density, and improved
reliability. Two of the highly anticipated applications of 5G are
AR/VR mobile gaming and driverless vehicles.
,⫸ What was the Blackberry Enterprise Server (BES)? Answer: The
BES enabled Blackberry device to receive "push" emails from
Microsoft Exchange Server, which meant that users could send and
receive emails no matter where they were (assuming they had cell
coverage, which by then was nearly everywhere).
⫸ What is the CIA Triad? Answer: It is where the C-I-A refers to
confidentiality, integrity, and availability. That is, the information in
these setting must be private (confidentiality), accurate (integrity),
and reliable (availability).
⫸ Which technology makes it possible for several users to share
multiple frequency bands at the same time by spreading the signal out
over the frequencies? Answer: Code Division Multiple Access
(CDMA).
CDMA spreads the signal out over frequencies so several users can
share multiple frequency bands at the same time.
⫸ What is a sandbox? Answer: Android OS was designed to be
highly secure and isolated application runtimes in their own virtual
sandbox . What this means is that even if the user downloaded
malware, the application would run in complete isolation from other
apps or system resources.
⫸ What are Potentially Unwanted Applications (PUAs)? Answer:
Potentially Unwanted Applications (PUAs) , was also thriving.
Developers create PUAs in an attempt to monetize their applications
through connections to aggressive third-party advertising networks.
, ⫸ What are PUAs also called sometimes? Answer: Referred to as
mobile adware, or madware . On behalf of these third-party
advertisers, the madware collects location information and tracks the
device, perhaps even harvesting browser histories and contacts.
⫸ What is a heartbleed? Answer: Heartbleed vulnerability, which
was a huge hole in the security code in very popular open source
applications. This vulnerability existed for more than a decade and
was not widely known until it was publicly disclosed in 2014.
⫸ What are the different tools used to evaluate and exploit security
issues with Android.? Answer: AndroRAT —This tool, which can be
bound to other applications, can read messages and contacts, steal
data, view video, record calls, and more. This full framework of open
source tools is freely available and is constantly updated.
Android SDK —The Android software development kit (SDK) is the
official Android development tool. It enables developers to compile
and decompile applications for Android. This is an essential
development or research toolkit.
DroidBox —Another application for analyzing Android applications,
DroidBox can check for password hashes, check files for read/write
data, and record incoming and outgoing communications (SMS
messages and phone calls), among other things.
