5G Wireless – 10 Questions to Test Your 5G Knowledge

Question 1:

What does 5G stand for?

A. Five gigabitB. Five group fiber
C. Fifth-generation wirelessD. Fifth group wireless

The answer is “C”: Fifth-generation wireless is an improvement over 4G LTE (Long Term Evolution) wireless services. Developed off the 4G service 5G can carry much more data at much greater speeds. 5G offers connections with much lower latency. That means that applications like medical equipment and autonomous vehicles that require split-second communication and acknowledgment will have it.


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Question 2:

5G has a latency of one millisecond or less. In this case, what does latency refer to?

A. The effectiveness of detecting a network disruptionB. The delay between an input and a desired effect or outcome
C. Length of time for devices to connect to each otherD. The time it takes to reset and restart a connection

The answer is “B”: Latency, or network latency is a measurement of the time it takes for a signal to cause an apparent action. Gamers are familiar with latency, experiencing delays in actions due to excessive latency. The delays in satellite communications is also an example of excessive latency.


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Question 3:

Massive MIMO uses dozens of antennas on a single array and can send and receive signals from more than 22 times more users than older technology. What does MIMO stand for?

A. Many in many outB. Message inside message outside
C. message input message outputD. Multiple input multiple output

The answer is “D”: MIMO stands for multiple-input-multiple-output. It provides the ability to use multiple transmitters and receivers to send and receive more data at one time. 5G base stations can have about 100 ports compared to the 12 that 4G stations offer.


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Question 4:

5G broke records during testing, including the level of spectral efficiency. What does spectral efficiency measure?

A. How many secure connections can be made at one timeB. How many devices can share a single spectrum
C. The quantity of data (bits) that can be transmitted to (n)users per secondD. Amount of interference between devices on the network

The answer is “C”: Spectral Efficiency – Sometimes just referred to as spectrum efficiency is a measure of how many bits of data can be moved to a certain amount of users each second.


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Question 5:

5G has greater bandwidth allowing for faster transmission of data. Which of the following terms has the same meaning?

A. StrenghtB. Speed
C. CapacityD. Connectivity

The answer is “C”: Bandwidth is equal to the network capacity to move data. High capacity (bandwidth) is just one advantage of 5G technology. Other Benefits are high speeds, low latency, high reliability, high availability, and an overall better experience for users.


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Question 6:

5G generates high speeds while using the band spectrum between 30 GHz and 300 GHz. What is this band called?

A. lower-frequency spectrumB. Ku-Band
C. Ultra-high frequency bandD. Millimeter-wave

The answer is “D”: The millimeter-wave spectrum covers frequencies between 30 GHz and 300 GHz and is known as the millimeter-wave since wavelengths range from 1-10 mm.


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Question 7:

5G network administrators can use network slicing as a network management feature. What does network slicing allow users to have?

A. The ability to utilize connections from other nearby networksB. The ability to utilize connections from other nearby networks
C. The designation of multiple passwords within a single 5G networkD. The capability to create multiple virtual networks within a single 5G network

The answer is “D”: Network slicing is a form of virtualization. It allows one shared physical network to have multiple logical networks running on top of it. These logical networks can be used for different devices and applications and provide different levels of services.


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Question 8:

As opposed to 4G towers, 5G towers are more compact and can be portable. They can be deployed in massive numbers to accommodate the specific needs of various locations. What are these compact base stations called?

A. Small cellsB. low-capacity cells
C. Short-range cellsD. Portable cells

The answer is “A”: Small cell base stations can be placed every 250 meters or so, creating a network of relayed signals. Basically, wireless network operators can improve network capacity by either adding more spectrum to their network or by increasing the number of cell sites they operate — small cells fall into that latter category.


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Question 9:

Spectrum efficiency and MIMO rely on a system called beamforming. What does this term refer to?

A. A traffic-signaling system that breaks down data into smaller packets for transportB. connectivity system that identifies the closest base station for each user
C. connectivity system that caps the number of users utilizing the network at onceD. A traffic-signaling system that identifies the route of least interference to deliver data to a user

The answer is “D”: Beamforming is a traffic-signaling system for cellular base stations that identifies the most efficient data-delivery route to a particular user, and it reduces interference for nearby users in the process.


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Question 10:

5G transceivers will incorporate full-duplex technology for data transmission to double the capacity of wireless networks. What does full-duplex mean?

A. The ability to utilize the full capacity of transmission at all timesB. The ability to become compatible with all types of IoT devices
C. The ability to transmit and receive data at the same time and frequencyD. The ability to incorporate twice the number of transceivers into one base station

The answer is “C”: Full-duplex is the ability to transmit and receive data at the same time and frequency. 4G does not use an efficient full-duplex technology as 5G does. Full duplex is better than frequency division duplexing (FDD) and time division duplex (TDD).

More resources:

5G and Full-duplexing technology by LightReading

5G is changing the world by CyberTakes

Updated 02/15/2021 by Kirby Allen