IEEE Alexsb || Vodafone Training Technical Test
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How can we increase any system Data Rate?
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Use high order modulation technique
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Use larger BW
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Both are correct
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Quiz Preview
- 2.
The Packet switching is simply ______ Path (Fill the blank)
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Dedicated
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Shared
Correct Answer
A. SharedExplanation
Packet switching is simply a shared path. In packet switching, data is divided into small packets and sent over a network. These packets can take different routes to reach their destination, and they may even arrive out of order. This shared path allows for more efficient use of network resources as multiple packets can be transmitted simultaneously. Additionally, packet switching allows for better fault tolerance as packets can be rerouted if there is a network failure or congestion.Rate this question:
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- 3.
Wireless speed usually is slower than wired
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True
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False
Correct Answer
A. TrueExplanation
Wireless speed is typically slower than wired connections due to various factors. Wireless signals are susceptible to interference from obstacles, distance, and other electronic devices, which can degrade the signal strength and result in slower speeds. Additionally, wireless networks are shared among multiple devices, leading to potential congestion and reduced speed. In contrast, wired connections provide a direct and dedicated connection, allowing for faster and more reliable data transfer. Therefore, it is generally true that wireless speed is slower than wired.Rate this question:
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- 4.
The circuit switching is simply _____ Path (Fill the blank)
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Dedicated
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Shared
Correct Answer
A. DedicatedExplanation
Circuit switching is a communication method where a dedicated communication path is established between two devices for the duration of the communication session. This means that the entire capacity of the communication path is reserved and dedicated to the two devices involved in the communication. Unlike shared communication methods, where multiple devices share the same communication path, circuit switching ensures a dedicated and exclusive connection between the devices.Rate this question:
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- 5.
The mobile frequency bands is in the range of ___, to decrease the length of the antenna (Fill the blank)
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Hz
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MHz
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GHz
Correct Answer
A. MHzExplanation
Mobile frequency bands are usually measured in megahertz (MHz). This is because higher frequency bands, such as gigahertz (GHz), would require shorter antennas due to their shorter wavelengths. By using lower frequency bands in the MHz range, the length of the antenna can be decreased, making it more practical for mobile devices. Using frequency bands in the Hz range would result in very long antennas, which would be impractical for mobile use.Rate this question:
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- 6.
2G system differs between Europe and USA
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True
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False
Correct Answer
A. TrueExplanation
The statement is true because the 2G system used in Europe differs from the one used in the USA. In Europe, the 2G system is based on the Global System for Mobile Communications (GSM) technology, while in the USA, it is based on the Code Division Multiple Access (CDMA) technology. These two technologies have different protocols and standards, which means that a phone designed for one system may not work on the other. Therefore, the 2G system does differ between Europe and the USA.Rate this question:
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- 7.
The first cellular systems were _____ . (Fill the blank)
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Analogue
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Digital
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Carrier Waves
Correct Answer
A. AnalogueExplanation
The first cellular systems were analogue. This means that they used analogue signals to transmit and receive information. Analogue signals are continuous and can have an infinite number of values, allowing for a wider range of frequencies and greater flexibility in signal transmission. However, analogue systems are more susceptible to interference and have limitations in terms of capacity and quality compared to digital systems.Rate this question:
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- 8.
' 3G is better than 2G in voice quality '
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True
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False
Correct Answer
A. TrueExplanation
The statement is true because 3G technology provides a higher bandwidth and faster data transfer speeds compared to 2G. This allows for better voice quality during phone calls as there is less distortion and clearer audio transmission. 3G networks also have better coverage and capacity, reducing the chances of dropped calls or poor reception. Overall, 3G technology offers improved voice quality and a better user experience compared to 2G.Rate this question:
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- 9.
SIM stands for ____ . (Fill the blank)
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Serial Identity Master
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Subscriber Interface Marker
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Subscriber Identity Module
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System Interface Module
Correct Answer
A. Subscriber Identity ModuleExplanation
SIM stands for Subscriber Identity Module. This is a small chip that is inserted into mobile devices to store information such as the user's phone number, contacts, and other data. The SIM card also authenticates the user's identity with the mobile network, allowing them to make calls, send messages, and access data services.Rate this question:
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- 10.
' The 2G is "Voice only" '
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True
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False
Correct Answer
A. FalseExplanation
The statement "The 2G is 'Voice only'" is false. 2G, or second generation, refers to the second generation of mobile network technology, which introduced digital voice communication along with basic data services such as SMS. While 2G primarily focused on voice calls, it also supported limited data services like text messaging and basic internet access. Therefore, it is not accurate to say that 2G is "voice only."Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Apr 18, 2018Quiz Created by
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