Quality of Service (QoS) in Telecommunications
Science & Technology
- PYQs8
- Articles1
Background
Understanding QoS is vital for assessing the effectiveness of digital infrastructure, addressing consumer grievances, and evaluating the success of government initiatives aimed at digital inclusion and connectivity, especially in remote regions.
Quality of Service (QoS) in telecommunications refers to the overall performance of a network as experienced by its users, encompassing parameters like coverage, call reliability, and data speeds. Regulatory bodies like TRAI define and monitor these standards to ensure consumer satisfaction and service reliability.
Facts & tables
- Definition
- Overall performance of a network from user perspective
- Key Parameters
- Coverage, Call Drop Rate, Call Setup Success Rate, Data Download/Upload Throughput
- Regulatory Body
- TRAI in India
- Objective
- Consumer protection and ensuring minimum service standards
| Type | Reference |
|---|---|
| Conceptual area | Digital Infrastructure |
| Conceptual area | Consumer Protection |
| Body | Role |
|---|---|
| Telecom Regulatory Authority of India (TRAI) | Monitors |
Prelims angle
Prelims angle: Multi-statement analysis
Prelims angle: Conceptual understanding
- Measures user experience of network performance.
- Key parameters: Coverage, Call Drop Rate, Data Throughput.
- TRAI sets and monitors QoS standards.
- Crucial for consumer protection and digital access.
- Ensures reliability of telecom services.
| Year | Framing tags |
|---|---|
| 2025 | Factual recall, Multi-statement analysis |
| 2022 | Multi-statement analysis, Conceptual understanding |
| 2022 | Multi-statement analysis, Conceptual understanding |
| 2022 | Factual recall, Conceptual understanding |
| 2019 | Conceptual understanding, Multi-statement analysis |
| 2018 | Multi-statement analysis, Factual recall |
| 2018 | Multi-statement analysis, Policy measures |
| 2017 | Factual recall, Multi-statement analysis |
Timeline
-
Digital Infrastructure
Conceptual area
-
Consumer Protection
Conceptual area
-
Prelims 2017
Factual recall, Multi-statement analysis
-
Prelims 2018
Multi-statement analysis, Factual recall
-
Prelims 2018
Multi-statement analysis, Policy measures
-
Prelims 2019
Conceptual understanding, Multi-statement analysis
-
Prelims 2022
Multi-statement analysis, Conceptual understanding
-
Prelims 2022
Multi-statement analysis, Conceptual understanding
-
Prelims 2022
Factual recall, Conceptual understanding
-
Prelims 2025
Factual recall, Multi-statement analysis
-
TRAI Assesses Mobile Network Quality Across Lunglei, Lawngtlai and Siaha Districts and adjoining areas in the State of Mizoram under North East LSA
QoS in telecom measures network performance (coverage, call drops, data speeds) from a user's perspective, with TRAI setting and monitoring standards to ensure reliable and accessible services.
See also
Past papers
2017–2025 · 8 questions
In the news
TRAI Assesses Mobile Network Quality Across Lunglei, Lawngtlai and Siaha Districts and adjoining areas in the State of Mizoram under North East LSA
QoS in telecom measures network performance (coverage, call drops, data speeds) from a user's perspective, with TRAI setting and monitoring standards to ensure reliable and accessible services.
Try these PYQs
With reference to “Software as a Service (SaaS)”, consider the following statements:
1. SaaS buyers can customize the user interface and can change data fields.
2. SaaS users can access their data through their mobile devices.
3. Outlook, Hotmail and Yahoo! Mail are forms of SaaS.
Which of the statements given above are correct?
Statement 1 is correct. In many cases, Software as a Service (SaaS) providers allow some degree of customization of the user interface and data fields to meet the specific needs of their customers. Statement 2 is correct. One of the key benefits of SaaS is its accessibility from anywhere with an internet connection, including mobile devices such as smartphones and tablets. SaaS applications are often designed to be mobile-friendly, allowing users to access their data and perform tasks on the go. Statement 3 is correct. Outlook, Hotmail, and Yahoo! Mail are examples of web-based email services that operate on the SaaS model. Users access these email services through web browsers without needing to install or maintain any software locally on their devices. The email data is stored and managed remotely on servers operated by the service providers. Therefore, all statements are correct.
In India, it is legally mandatory for which of the following to report on cybersecurity incidents?
1. Service providers
2. Data centres
3. Body corporate
Select the correct answer using the code given below:
In India, section 70-B of the Information Technology Act, 2000 (the IT Act) gives the Central Government the power to appoint an agency of the government to be called the Indian Computer Emergency Response Team. Further, it is legally mandatory for service providers, data centres and body corporates to report on cybersecurity incidents as outlined in the Information Technology (The Indian Computer Emergency Response Team and Manner of Performing Functions and Duties) Rules, 2013, which were notified under the Information Technology Act, 2000.
With reference to Web 3-0, consider the following statements :
1. Web 3-0 technology enables people to control their own data.
2. In Web 3-0 world, there can be blockchain based social networks.
3. Web 3-0 is operated by users collectively rather than a corporation.
Which of the statements given above are correct?
Statement 1 is correct. A key aspect of Web 3.0 is the concept of decentralization, where users have more control and ownership over their personal data, rather than having it stored and controlled by centralized platforms. Statement 2 is correct. Blockchain technology is a core component of Web 3.0, and it can enable the creation of decentralized, user-owned social networks and platforms. Statement 3 is correct. The decentralized nature of Web 3.0 means that it is not controlled by a single corporation or entity, but rather operated and maintained collectively by the users and participants in the network. Therefore, all three statements regarding Web 3.0 are correct.
Which of the following is/are the aim/aims of "Digital India" Plan of the Government of India?
1. Formation of India's own Internet companies like China did.
2. Establish a policy framework to encourage overseas multinational corporations that collect Big Data to build their large data centres within our national geographical boundaries.
3. Connect many of our villages to the Internet and bring Wi-Fi to many of our school, public places and major tourist centres
Select the correct answer using the code given below
* Statement 1 is not correct: The formation of India’s own internet companies, similar to China’s approach, is not an aim of the Digital India programme. The initiative focuses on creating digital infrastructure, providing digital services, and promoting digital literacy — not establishing government-backed internet firms. * Statement 2 is not correct: The Digital India plan does not include any policy framework to attract foreign multinational corporations to build data centres in India. While data localisation and data centre policies have emerged later under different frameworks, they are not part of the original Digital India objectives. * Statement 3 is correct: One of the key aims of Digital India is to connect villages through broadband and to provide Wi-Fi access in schools, public places, and tourist centres. This is part of its core pillars like Broadband Highways, Public Internet Access Programme, and Early Harvest Programmes.
With reference to communication technologies, what is/are the difference/differences between LTE (Long-Term Evolution) and VoLTE (Voice over Long-Term Evolution)?
1. LTE is commonly marketed as 3G and VoLTE is commonly marketed as advanced 3G.
2. LTE is data-only technology and VoLTE is voice-only technology.
Select the correct answer using the code given below.
Statement 1 is incorrect: LTE is actually marketed as 4G, not 3G. VoLTE is not marketed as advanced 3G, but rather as an advancement over 4G LTE, allowing for voice calls over the 4G network. Statement 2 is incorrect: LTE does primarily focus on providing high-speed data services, but it's not a data-only technology. VoLTE, on the other hand, is not a voice-only technology. It allows for voice calls to be made over the 4G LTE network, but it doesn't exclude data services. Therefore, both statements are incorrect.
Show 3 more PYQs
In which of the following areas can GPS technology be used?
1. Mobile phone operations
2. Banking operations
3. Controlling the power grids
Select the correct answer using the code given below:
GPS, or Global Positioning System, is a satellite-based navigation system that provides geolocation and time information to a GPS receiver anywhere on or near the Earth. It has a wide range of applications. Statement 1 is correct. GPS is used in mobile phones for various purposes such as location tracking, navigation, and location-based services. Statement 2 is correct. GPS is used in banking operations for ATM location services and for time-stamping transactions, which is crucial for maintaining accurate records. Statement 3 is correct. GPS is used for time-stamping power system measurements, which is vital for grid stability and synchronization. Therefore, GPS technology can be used in all the three areas mentioned.
Consider the following statements:
I. Indian Railways have prepared a National Rail Plan (NRP) to create a future ready railway system by 2028.
II. 'Kavach' is an Automatic Train Protection system developed in collaboration with Germany.
III. 'Kavach' system consists of RFID tags fitted on track in station section.
Which of the statements given above are **not** correct?
❌ Statement I: Incorrect
The National Rail Plan targets 2030 for a future-ready railway, not 2028. ❌ Statement II: Incorrect
Kavach is an indigenous Automatic Train Protection system developed under 'Make in India', not with Germany. ✅ Statement III: Correct
Kavach uses RFID tags on tracks in station sections to track train location and speed continuously. Therefore, Statements I and II are incorrect, and Statement III is correct.
Consider the following communication technologies:
1. Closed-circuit Television
2. Radio Frequency Identification
3. Wireless Local Area Network
Which of the above are considered Short-Range devices/technologies?
Out of the listed communication technologies, all three can be considered short-range devices/technologies. Closed-Circuit Television (CCTV): CCTV systems primarily use cables or wireless connections with a limited range, typically within a building or a designated area. Radio Frequency Identification (RFID): RFID uses radio waves to identify objects. The reading range of RFID tags depends on the specific technology but generally falls within the short-range category, from a few centimetres to a few meters. Wireless Local Area Network (WLAN): WLANs, commonly known as Wi-Fi networks, typically operate within a range of tens of meters indoors and up to hundreds of meters outdoors depending on factors like signal strength and frequency band. While the range might be slightly larger than the others on this list, WLANs still fall under the short-range classification compared to technologies like cellular networks or satellite communication.