Computer Knowledge

Mobile Telecommunications Networks

2,143 Questions

Mobile telecommunications networks focus on cellular technologies including 5G architecture and GSM components. Key areas of study include network function virtualization, software defined networking, and beamforming. This topic is crucial for technical exams testing computer and networking awareness.

5G architecture componentsNetwork function virtualizationMassive MIMO technologyGSM network registersBeamforming and CSI

Mobile Telecommunications Networks Questions

Multiple choice

Which of the following statement is incorrect about an IEEE standard 802.11n?

  1. An IEEE standard 802.11n was standardized in 2009.

  2. An IEEE standard 802.11n extends 802.11b and .11g standard.

  3. An IEEE standard 802.11n uses 5.725 GHz frequency bands.

  4. An IEEE standard 802.11n uses MIMO (Multiple Input Multiple Output) by having multiple antennae at both sender and receiver.

  5. Expected total multi-station throughput of an IEEE standard 802.11n is 600 Mbps.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

It is incorrect statement about an IEEE standard 802.11n since it uses the 2.4 GHz and 5 GHz frequency bands.

Multiple choice

Which of the following statements is incorrect about the Wi-Fi IEEE standard 802.11a?

  1. The Wi-Fi standard IEEE 802.11a is introduced in 1999.

  2. The Wi-Fi standard IEEE 802.11a operates at 5GHz.

  3. The theoretical speed and actual speed of Wi-Fi standard IEEE 802.11a are 54 Mbps and 15-20 Mbps.

  4. The Wi-Fi standard IEEE 802.11a is least expensive than IEEE 802.11b.

  5. 50-75 is the feet range of the Wi-Fi standard IEEE 802.11a.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is incorrect statement. The Wi-Fi IEEE standard 802.11a is more expensive than all other standards.

Multiple choice

Read the passage given below carefully and answer the following questions.Where are the radio transmitters located? We are living in the age of technology. The whole world is taking a new shape with every fraction of time. It has resulted to globalization. There are a lot of new means of communication which have made our life so simple and easy going. Mobile phone is a revolutionary step in the field of tele-communication. Mobile phone has completely changed the concept of the telephoning. Now a phone is not only a mere phone but it is also a lot in itself. A mobile phone works on a unique networked system which needs no wiring, no fixation and no botheration. Originally it was used in cars, airlines, and passenger trains but now it is becoming ubiquitous. It is basically low- power radio telephone. In this magical system calls go through radio transmitters that are located within small geographical unit which are known as cells.

  1. antena

  2. towers

  3. cells

  4. roofs

  5. dummy
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Concept based

Multiple choice wireless connections parts of computer physics

Which technique is designed to provide communication between two moving units called mobile station. 

  1. Cellular technology

  2. Mobile switching

  3. Paging

  4. Advanced mobile phone system
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cellular technology is designed to provide communication between two moving units called mobile station.

Cellular communication is designed to provide communications between two moving units, or between one mobile unit and one stationary phone or land unit (PSTN). ... Each base station is controlled by a switching office, called a mobile switching center (MSC).

Cellular technology is what mobile phone networks are based on, and it's the technology that gave mobile phones the name “cell phones”. Cellular technology basically refers to having many small interconnected transmitters as opposed to one big one.

A cellular network or mobile network is a communication network where the last link is wireless. The network is distributed over land areas called cells, each served by at least one fixed-location transceiver, but more normally three cell sites or base transceiver stations.

Cellular (cell) phones operate with radio frequencies, a form of electromagnetic energy located on the electromagnetic spectrum between FM radio waves and the waves used in microwave ovens, radar, and satellite stations. Cell phones do not emit ionizing radiation, the type that damages DNA.

Multiple choice

Which frequency band is commonly used for 5G NR?

  1. Sub-6 GHz

  2. mmWave

  3. Both Sub-6 GHz and mmWave
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

5G NR (New Radio) utilizes both Sub-6 GHz and mmWave frequency bands to provide enhanced network performance and capacity.

Multiple choice

What is the approximate range of Sub-6 GHz frequencies used for 5G?

  1. 1 GHz to 6 GHz

  2. 24 GHz to 100 GHz

  3. 30 GHz to 300 GHz
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sub-6 GHz frequencies for 5G typically range from 1 GHz to 6 GHz, offering wider coverage and better signal penetration.

Multiple choice

Which frequency range is referred to as the 'mmWave' spectrum for 5G?

  1. 1 GHz to 6 GHz

  2. 24 GHz to 100 GHz

  3. 30 GHz to 300 GHz
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The mmWave spectrum for 5G encompasses frequencies ranging from 24 GHz to 100 GHz, enabling ultra-high bandwidth and low latency.

Multiple choice

What is the primary advantage of using mmWave frequencies in 5G?

  1. Wider coverage

  2. Improved signal penetration

  3. Higher bandwidth and lower latency
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

mmWave frequencies in 5G offer significantly higher bandwidth and lower latency compared to Sub-6 GHz, enabling faster data transfer rates and near-real-time applications.

Multiple choice

Which frequency band is commonly used for 5G Fixed Wireless Access (FWA)?

  1. Sub-6 GHz

  2. mmWave

  3. Both Sub-6 GHz and mmWave
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Both Sub-6 GHz and mmWave frequencies are utilized for 5G FWA, with Sub-6 GHz providing wider coverage and mmWave offering higher capacity and lower latency.

Multiple choice

What is the main challenge associated with mmWave frequencies in 5G?

  1. Limited coverage

  2. High latency

  3. Low bandwidth
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The primary challenge with mmWave frequencies in 5G is their limited coverage range due to higher signal attenuation and susceptibility to obstructions.

Multiple choice

Which frequency band is primarily used for 5G Standalone (SA) networks?

  1. Sub-6 GHz

  2. mmWave

  3. Both Sub-6 GHz and mmWave
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

5G SA networks can utilize both Sub-6 GHz and mmWave frequencies, depending on the specific deployment and service requirements.

Multiple choice

What is the primary benefit of using Sub-6 GHz frequencies in 5G?

  1. Wider coverage

  2. Higher bandwidth

  3. Lower latency
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sub-6 GHz frequencies provide wider coverage compared to mmWave, making them suitable for large-scale 5G deployments and ensuring better signal penetration in various environments.