Umts Services And Applications

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Quizzes Created: 3 | Total Attempts: 484
| Attempts: 146
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  • 1/40 Questions

    GSM Phase 2+ GPRS provides on one side a circuit switched interface between the BSC and the MSC that corresponds to the normal GSM Phase 2 circuit switched interface and on the other side a packet switched interface between the BSC and the SGSN.

    • True
    • False
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About This Quiz

This quiz assesses knowledge on UMTS Services and Applications, focusing on GSM, GPRS, and EDGE technologies. It evaluates understanding of data transmission rates, coding schemes, and modulation techniques in wireless networks, crucial for professionals in telecommunications.

Umts Services And Applications - Quiz

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  • 2. 

    GPRS uses 4 coding schemes, which are different from the normal GSM Phase 2+.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    GPRS (General Packet Radio Service) indeed uses 4 coding schemes that are distinct from the regular GSM Phase 2+. These coding schemes are specifically designed to optimize data transmission over the GPRS network. By utilizing these coding schemes, GPRS is able to provide efficient packet-switched data services, enabling faster and more reliable data transmission for mobile devices.

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  • 3. 

    In GPRS, up to 8 channels can be combined at the air interface to increase the data rate.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In GPRS (General Packet Radio Service), it is possible to combine up to 8 channels at the air interface to enhance the data rate. This allows for a higher transmission speed and improved efficiency in transmitting data packets. By utilizing multiple channels simultaneously, GPRS can provide faster and more reliable data communication, making it a suitable technology for mobile internet access and other data-intensive applications.

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  • 4. 

    GSM Phase + EDGE uses the GPRS for CS traffic and/or the HSCSD technology for PS data transfer.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    It's the reverse.

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  • 5. 

    Compared to other GSM technologies, EDGE uses the same modulation on the air interface.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    EDGE uses a different modulation.

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  • 6. 

    I. In standard UMTS version, data will be sent to the UE at a rate of up to 2Mbps. II. In HSDPA, rates of 14.4 Mbps may be reached depending on the modulation and coding scheme used,

    • Both statements are true

    • Both statements are false

    • Only the first statement is true

    • Only the second statement is true

    Correct Answer
    A. Both statements are true
    Explanation
    The given answer is correct because both statements are true. The first statement states that in the standard UMTS version, data can be sent to the UE at a rate of up to 2Mbps. This is true as UMTS supports data rates of up to 2Mbps. The second statement states that in HSDPA, rates of 14.4 Mbps may be reached depending on the modulation and coding scheme used. This is also true as HSDPA is an enhancement to UMTS that allows for higher data rates, and 14.4 Mbps is one of the possible rates that can be achieved with HSDPA.

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  • 7. 

    When defining the 3rd Generation (3G) specifications, the emphasis is on the unlimited prospect of seamless services and applications that can be provided.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because when defining the specifications for the 3rd Generation (3G) technology, the focus is on enabling seamless services and applications. 3G technology aims to provide unlimited possibilities and capabilities for users, allowing them to access various services and applications without any interruptions or limitations. This emphasis on seamless services and applications is one of the key objectives of 3G technology.

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  • 8. 

    Mobile applications started in the introduction of UMTS.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Mobile applications already existed in GSM.

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  • 9. 

    In UMTS, this refers to services provided to the subscriber.

    • Mobile Applications

    • Subscription Services

    • Subscription Line

    • Intelligent Services

    Correct Answer
    A. Mobile Applications
    Explanation
    The correct answer is Mobile Applications. In UMTS (Universal Mobile Telecommunications System), mobile applications refer to the services provided to the subscriber. These applications can include various functionalities such as messaging, internet browsing, multimedia services, and other value-added services that are accessible through mobile devices. These applications enhance the user experience and provide additional features and services beyond basic voice communication.

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  • 10. 

    In the same way as 3G was specified, mobile applications are also standardized in UMTS.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Mobile applications are not yet standardized in UMTS.

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  • 11. 

    In the set of services provided by UMTS, Message Services is composed of teleservices, such as speech call, facsimile call and CS data.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    This is for Circuit Switched (CS) Services and not for Message Services.

    Message Services include SMS and MMS.

    Another set of service is Packet Switched Services that are based on the PS connectivity provided by the Packet Data Protocol (PDP) contexts.

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  • 12. 

    All UMTS services are also mobile applications.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Some services such as PS and CS data are not considered applications.

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  • 13. 

    A service platform is a logical entity often containing several pieces of equipment.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    A service platform refers to a logical entity that typically consists of multiple pieces of equipment. This means that it is a virtual or conceptual construct that brings together various components or devices necessary for providing a service. Therefore, the statement "A service platform is a logical entity often containing several pieces of equipment" is accurate and true.

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  • 14. 

    Which of the following service platforms are the majority of existing applications adopted from GSM?

    • Voice Mail System

    • Service delivery platform (e.g. SMSC)

    • Service creation and execution platform

    • IP Multimedia Subsystem platform

    Correct Answer(s)
    A. Voice Mail System
    A. Service delivery platform (e.g. SMSC)
    A. Service creation and execution platform
    Explanation
    The majority of existing applications adopted from GSM are Voice Mail System, Service delivery platform (e.g. SMSC), and Service creation and execution platform. These platforms are commonly used in GSM networks to provide services such as voice mail, messaging, and service creation and execution. The IP Multimedia Subsystem platform, on the other hand, is a newer technology that enables the delivery of multimedia services over IP networks and is not as commonly adopted from GSM.

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  • 15. 

    In IP world, applications are termed as real-time and non-real-time.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    In the IP world, applications are categorized as either real-time or non-real-time. Real-time applications require immediate and continuous data transmission, such as video conferencing or online gaming, where any delay can significantly impact the user experience. On the other hand, non-real-time applications, like email or web browsing, do not require immediate data transmission and can tolerate some delay. Therefore, the statement is true, as applications in the IP world are indeed classified as real-time and non-real-time based on their data transmission requirements.

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  • 16. 

    I. Applications including time-insensitive information are non-real-time. II. In these applications, the data blocks must be displayed consecutively at predetermined time intervals, thus require specific delay, jitter and error parameters.

    • Both statements are true

    • Both statements are false

    • Only the first statement is true

    • Only the second statement is true

    Correct Answer
    A. Only the first statement is true
    Explanation
    The second statement is a description of REAL TIME applications.

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  • 17. 

    Non-real-time applications, though time-insensitive, are more sensitive to error parameters.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Non-real-time applications refer to applications that do not require immediate or real-time processing. These applications are not time-sensitive, meaning they do not have strict timing requirements. However, even though they are not time-sensitive, they are still sensitive to error parameters. This means that non-real-time applications may be more affected by errors or inaccuracies in the system, as they do not have the real-time constraints that would allow for immediate correction or adjustment. Therefore, the given statement is true.

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  • 18. 

    In UMTS network, applications are classified into four types based on the gnerated traffic: Conventional, Streaming, Interactive, and Background.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    It's Conversational, not Conventional. (gotcha! >:) )

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  • 19. 

    It is the elapsed time for a packet to traverse the network from the source to the destination.

    • Delay

    • Delay Variation (Jitter)

    • Loss Rate

    • Throughput

    Correct Answer
    A. Delay
    Explanation
    Delay refers to the time it takes for a packet to travel from its source to its destination in a network. It is the elapsed time that includes various factors such as processing time, queuing time, transmission time, and propagation time. A higher delay can result in slower network performance and increased latency. Therefore, delay is the most appropriate option among the given choices as it accurately describes the elapsed time for packet traversal in a network.

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  • 20. 

    It is defined as the variation in delay encountered by similar packets following the same route through the network.

    • Delay

    • Jitter

    • Loss Rate

    • Throughput

    Correct Answer
    A. Jitter
    Explanation
    Jitter refers to the variation in delay that similar packets experience while following the same route through a network. It is a measure of the inconsistency in packet arrival times. Higher jitter can result in packet loss or delays in data transmission, leading to degraded network performance. Therefore, jitter is the correct answer as it accurately describes the given definition.

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  • 21. 

    Refers to the percentage of data loss among all the delivered data in a given transmission time interval, which can be evaluated in frame level or packet level

    • Lossless Compression

    • Jitter

    • Loss Rate

    • Throughput

    Correct Answer
    A. Loss Rate
    Explanation
    Loss rate refers to the percentage of data loss among all the delivered data in a given transmission time interval. It can be evaluated in frame level or packet level. Loss rate is a measure of the reliability of a transmission system, indicating the amount of data that is lost during transmission. A high loss rate indicates a higher probability of data loss, while a low loss rate indicates a more reliable transmission.

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  • 22. 

    It is defined as the rate at which packets are transmitted in a network. It is expressed as a maximum rate or an average rate.

    • Bandwidth

    • Jitter

    • Loss Rate

    • Throughput

    Correct Answer
    A. Throughput
    Explanation
    Throughput refers to the rate at which packets are transmitted in a network. It can be expressed as a maximum rate or an average rate. This term is often used to measure the actual data transfer rate achieved in a network, taking into account factors such as latency, packet loss, and network congestion. Essentially, throughput indicates the amount of data that can be successfully transmitted within a given time frame.

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  • 23. 

    Jitter requirement only affects real-time streaming applications because this QoS requirement arises from the continuous traffic characteristics of this class of applications.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because jitter refers to the variation in the delay of packet arrival in a network. Real-time streaming applications, such as video conferencing or online gaming, require a continuous and smooth flow of data packets to maintain a seamless user experience. Any significant variation in packet arrival times can lead to disruptions or lag in the streaming. Therefore, the jitter requirement is specific to real-time streaming applications to ensure consistent and uninterrupted data transmission.

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  • 24. 

    All QoS classes have Loss Rate requirements.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because all Quality of Service (QoS) classes have Loss Rate requirements. QoS classes are used to prioritize and manage network traffic, and one of the key factors in determining the priority of a particular class is its loss rate. Loss rate refers to the percentage of packets or data that are lost or discarded during transmission. Therefore, in order to ensure a certain level of quality and reliability for different types of traffic, all QoS classes have loss rate requirements.

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  • 25. 

    Real-time applications have a stricter requirement on Loss Rate than non-real-time applications.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The reverse is true.

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  • 26. 

    Delay is also called latency.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Delay and latency are often used interchangeably to refer to the amount of time it takes for data to travel from one point to another in a network. Both terms essentially describe the same concept of a time delay in data transmission. Therefore, it is correct to say that delay is also called latency.

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  • 27. 

    QoS definition steps: 1. Service Classes divide connections into "main" classes. 2. Traffic parameters define mainly the bandwidth requirements. 3. QoS parameters finally defines the QoS of the connection: delay, jitter, buffer etc.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The explanation for the given correct answer is that the statement accurately describes the steps involved in defining Quality of Service (QoS). The first step involves dividing connections into "main" classes based on their service requirements. The second step focuses on defining the traffic parameters, particularly the bandwidth requirements for each connection. Finally, the QoS parameters are defined, which include factors such as delay, jitter, and buffer size, ultimately determining the quality of the connection. Therefore, the answer "True" is correct as it aligns with the provided steps for defining QoS.

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  • 28. 

    Speech coding algorithms used in GSM and UMTS are the same.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    They are different.

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  • 29. 

    Which of the following is used to maintain the quality of the call when the speech coding changes especially when there is an inter-system handover?

    • Adaptive Multi-Rate

    • Enhanced Full Rate

    • Full Rate

    • Half Rate

    Correct Answer
    A. Adaptive Multi-Rate
    Explanation
    Adaptive Multi-Rate (AMR) is used to maintain the quality of the call when the speech coding changes, especially during an inter-system handover. AMR is a speech coding standard that adjusts the bit rate dynamically based on the network conditions and available bandwidth. It allows for efficient utilization of network resources and ensures that the call quality remains consistent even when transitioning between different systems.

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  • 30. 

    For streaming QoS, the data is buffered in UTRAN in order to control the radio interface access and its load.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because buffering the data in UTRAN allows for better control over the radio interface access and its load. By buffering the data, the UTRAN can manage the flow of data and ensure that it is transmitted efficiently over the radio interface. This helps to optimize the quality of service (QoS) for streaming, as it allows for smoother and more consistent delivery of the data to the user.

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  • 31. 

    Determine the QoS class of the following: File Download

    • Conversational

    • Interactive

    • Background

    • Streaming

    Correct Answer
    A. Background
    Explanation
    The QoS class of "Background" is the correct answer because it refers to activities that require minimal network resources and can tolerate delays or interruptions. Background tasks are typically non-interactive and can be processed in the background while other activities take priority. This QoS class is suitable for activities such as file downloads, where the user does not require immediate feedback or real-time interaction.

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  • 32. 

    Determine the QoS class of the following: E-mail

    • Conversational

    • Interactive

    • Background

    • Streaming

    Correct Answer
    A. Background
    Explanation
    The QoS class of "Background" is the correct answer because background activities like downloading or uploading files, software updates, or non-interactive tasks require lower priority compared to other activities. These activities can run in the background without affecting the performance of more time-sensitive tasks like conversational or interactive activities.

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  • 33. 

    Determine the QoS class of the following: Location-based Services

    • Conversational

    • Interactive

    • Background

    • Streaming

    Correct Answer
    A. Interactive
    Explanation
    The QoS class of "Interactive" is determined based on the nature of the service. Interactive services require real-time or near-real-time communication between the user and the system, with minimal delay or latency. These services typically involve two-way communication, such as video conferencing, online gaming, or interactive web applications. The QoS class ensures that the service is prioritized to provide a seamless and responsive user experience.

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  • 34. 

    Applications are the end subscriber services and are no longer standardized.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    This statement is true because applications, which refer to software programs or services that perform specific tasks for users, are no longer standardized. In the past, there were standardized applications that were commonly used by everyone. However, with advancements in technology and the increasing variety of user needs, applications have become more diverse and tailored to specific purposes. This means that there is now a wide range of applications available to end subscribers, each serving different functions and catering to different user preferences.

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  • 35. 

    A PS service that is a direct, real-time voice communications service. The calls can be started to both individuals and groups with just a push of a key because of a direct connection. The one way at a time, call connection is almost instant.

    • VoIP

    • PoC

    • Videophone

    • IPTV

    Correct Answer
    A. PoC
    Explanation
    PoC stands for Push-to-Talk over Cellular. It is a service that allows users to have direct, real-time voice communications. With just a push of a key, calls can be started to individuals or groups. The direct connection enables instant call connections, allowing communication one way at a time. This service is commonly used in industries such as transportation, logistics, and public safety, where instant communication is crucial.

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  • 36. 

    A PS service that implies a full-duplex system, carrying both video and audio, and is intended for use in conversational environment. The same delay requirement as for conversational voice will apply.

    • VoIP

    • PoC

    • Videophone

    • IPTV

    Correct Answer
    A. Videophone
    Explanation
    A videophone is a PS (Packet Switched) service that supports full-duplex communication, allowing both video and audio to be transmitted simultaneously. It is specifically designed for use in conversational environments, where real-time communication is essential. The same delay requirements as those for conversational voice apply, ensuring that the video and audio are synchronized and delivered with minimal delay. Therefore, a videophone is the correct answer in this context.

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  • 37. 

    A PS service that provides full VCR-like controls with capability to play, pause, fast-forward (multiple scan rates), fast-rewind and direct jump to a particular part of a movie.

    • VoIP

    • PoC

    • Video on Demand

    • IPTV

    Correct Answer
    A. Video on Demand
    Explanation
    Video on Demand (VOD) is the correct answer because it is a service that allows users to access and watch video content whenever they want, giving them full control over playback. The description of the PS service aligns with the features of VOD, such as the ability to play, pause, fast-forward, fast-rewind, and jump to specific parts of a movie. VoIP, PoC, and IPTV are not relevant to the given description and do not provide the same VCR-like controls for video playback.

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  • 38. 

    QoS is a set of requirement to be met so that a service or application can be delivered to the end-user in a quantitative and qualitative service level.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement accurately describes the concept of Quality of Service (QoS). QoS refers to a set of requirements that must be fulfilled in order to deliver a service or application to the end-user at a satisfactory quantitative and qualitative level. This means that the service or application should meet certain performance metrics, such as bandwidth, latency, reliability, and prioritization of network traffic, to ensure a high-quality user experience. Therefore, the answer is true.

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  • 39. 

    It is a contract to specify the transit of services through network domains.

    • Service Level Agreement

    • Handshake

    • Inter-network agreement

    • Service Policy

    Correct Answer
    A. Service Level Agreement
    Explanation
    A Service Level Agreement (SLA) is a contract that defines the level of service expected between a service provider and a customer. It outlines the specific services to be provided, performance metrics, responsibilities of both parties, and remedies in case of non-compliance. In this context, the SLA is used to specify the transit of services through network domains, ensuring that the agreed-upon level of service is maintained throughout the network.

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  • 40. 

    I. QoS provision mechanisms include parameters mapping, admission and resource reservations schemes. II. QoS control mechanisms consist of traffic shaping, scheduling, policing and control mechanisms.

    • Both statements are true

    • Both statements are false

    • Only the first statement is true

    • Only the second statement is true

    Correct Answer
    A. Both statements are true
    Explanation
    The explanation for the given correct answer is that both statements are true. The first statement states that QoS provision mechanisms include parameters mapping, admission, and resource reservations schemes, which is true as these mechanisms are essential for ensuring quality of service. The second statement states that QoS control mechanisms consist of traffic shaping, scheduling, policing, and control mechanisms, which is also true as these mechanisms are used to control and manage the flow of traffic to ensure quality of service. Therefore, both statements accurately describe different aspects of QoS mechanisms.

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  • Current Version
  • Apr 29, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 19, 2011
    Quiz Created by
    Fgpgonzales

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