Ran Volte Assessment - Restored

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Ran Volte Assessment - Restored - Quiz
About This Quiz

RAN VoLTE ASSESSMENT
Please read all instructions carefully before starting the quiz:
QUIZ comprises of 40 QUESTIONS
Total time to complete is 60 MINUTES
Passing Score is 75%
Questions are primarily MULTIPLE CHOICE
Make sure you are in a secure and noise free environment for the entire duration of the quiz.
While taking the quiz, you will be allowed to only move to the next QUESTION. However you can mark the question that you want to review again and you can view/edit all your selections before final submission. The Quiz doesn't let you submit without answering all the questions.
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  • 2. 

    Which of the following can impact peformance of a VoLTE call

    • Jitter

    • Packet Loss

    • Latency

    • All of the above

    Correct Answer
    A. All of the above
    Explanation
    Jitter, packet loss, and latency can all impact the performance of a VoLTE call. Jitter refers to the variation in the delay of packets, which can cause disruptions in the call quality. Packet loss occurs when packets of data are not successfully transmitted, resulting in missing or distorted audio during the call. Latency refers to the delay in the transmission of data, which can cause delays in the conversation and affect the real-time nature of the call. All of these factors can contribute to a degraded VoLTE call experience.

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  • 3. 

    RTP stands for

    • Run+time protocol

    • Real-Time transport protocol

    • Real Transport Protocol

    • Round-Time Transport Protocol

    Correct Answer
    A. Real-Time transport protocol
    Explanation
    RTP stands for Real-Time Transport Protocol. This protocol is used for delivering audio and video over IP networks. It provides mechanisms for the timely and synchronized delivery of data packets, ensuring that real-time applications such as video conferencing and streaming media can be transmitted in a smooth and efficient manner. RTP works in conjunction with other protocols such as UDP (User Datagram Protocol) for transport and RTCP (Real-Time Control Protocol) for monitoring and control.

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  • 4. 

    The subscribers profiles stored in which node?

    • MRFP

    • HSS

    • MTAS

    • I-CSCF

    Correct Answer
    A. HSS
    Explanation
    The Home Subscriber Server (HSS) is responsible for storing the subscriber profiles in a telecommunications network. It contains information about the subscribers' identities, authentication credentials, service profiles, and other relevant data. Therefore, the correct answer is HSS.

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  • 5. 

    What message could be used to terminate a session?

    • INVITE

    • 180 RINGING

    • 200OK

    • BYE

    Correct Answer
    A. BYE
    Explanation
    The message that could be used to terminate a session is "BYE". This message is commonly used in Session Initiation Protocol (SIP) to indicate the end of a session. It is sent by one party to indicate their desire to end the call or session, and the other party responds with a "200 OK" message to acknowledge the termination. The "BYE" message helps in gracefully ending the session and freeing up any resources that were being used.

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  • 6. 

    There is one APN per Default Bearer and each Default Bearer have their own IP addresses and QoS parameters

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Each Default Bearer in a network has its own Access Point Name (APN), which represents a specific network service or function. Each APN is associated with its own IP addresses and Quality of Service (QoS) parameters. This allows for different levels of priority and performance for each Default Bearer. Therefore, the statement that there is one APN per Default Bearer and each Default Bearer has its own IP addresses and QoS parameters is true.

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  • 7. 

    GBR stands for...

    • Gurrantee bit rate

    • Gurrantee byte rate

    • Gauge bar rate

    • Giga Bit packet rate

    Correct Answer
    A. Gurrantee bit rate
    Explanation
    GBR stands for "Guarantee Bit Rate". This term is commonly used in telecommunications to refer to a guaranteed minimum rate of data transfer or transmission. It ensures that a certain amount of bandwidth is allocated or reserved for a specific service or application, guaranteeing a minimum level of performance.

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  • 8. 

    SIP stands for

    • Session initiation protocol

    • Silent insertion protocol

    • Session insertion portion

    • Season initiation protocol

    Correct Answer
    A. Session initiation protocol
    Explanation
    SIP stands for Session Initiation Protocol. It is a communication protocol used for initiating, modifying, and terminating sessions between participants over an IP network. It is commonly used for voice and video calls, instant messaging, and other multimedia communications. The other options, silent insertion protocol, session insertion portion, and season initiation protocol, are not valid definitions for SIP.

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  • 9. 

    SRVCC

    • Single radio volume call continiuty

    • Single radio voice call continuity

    • Single ramdom voice call continuity

    • Simple radio voice call continuity

    Correct Answer
    A. Single radio voice call continuity
    Explanation
    SRVCC stands for Single Radio Voice Call Continuity. This term refers to a feature in telecommunications that allows for seamless handover of a voice call from an LTE (Long-Term Evolution) network to a 2G or 3G network. This ensures that the call remains uninterrupted as the user moves between different network technologies. Therefore, the correct answer is "single radio voice call continuity".

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  • 10. 

    What messages could be used to change an established session?

    • REGISTER

    • NOTIFY

    • UPDATE

    • 100 Trying

    Correct Answer
    A. UPDATE
    Explanation
    The UPDATE message can be used to change an established session. This message is typically used in the Session Initiation Protocol (SIP) to modify the parameters of an existing session, such as changing the media characteristics or updating the session description. By sending an UPDATE message, the sender can request changes to be made to the session, allowing for updates and modifications during an ongoing session.

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  • 11. 

    One of the tasks performed by I-CSCF is

    • Enforce Network level policies

    • Forking of multimedia functions

    • Routes SIP request received from another network towards S-CSCF

    • Selection of routing destination based on no. analysis

    Correct Answer
    A. Routes SIP request received from another network towards S-CSCF
    Explanation
    The I-CSCF is responsible for routing SIP (Session Initiation Protocol) requests received from another network towards the S-CSCF (Serving-CSCF). This means that when a SIP request is received by the I-CSCF, it determines the appropriate destination within the network and forwards the request to the S-CSCF for further processing. This task helps in ensuring that the SIP requests are efficiently routed within the network, allowing for seamless communication between different networks.

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  • 12. 

    What message is returned when the server received a request that contains a Max-Forwards header field with the value zero, too many hops?

    • SIP 483

    • SIP 480

    • SIP 500

    • SIP 408

    Correct Answer
    A. SIP 483
    Explanation
    When the server receives a request that contains a Max-Forwards header field with the value zero, it means that the request has reached the maximum number of allowed hops or forwarding. In this case, the server returns a SIP 483 message, indicating that the request has been stopped due to too many hops.

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  • 13. 

    MME sends out Authentication Request with the following authentication vectors/parameters

    • KASME

    • RAND

    • XRES

    • AUTN

    • Options 2 & 4

    Correct Answer
    A. Options 2 & 4
    Explanation
    The MME sends out an Authentication Request with the authentication vectors/parameters KASME, RAND, XRES, and AUTN. The correct answer is options 2 and 4, which means that both RAND and AUTN are included in the Authentication Request.

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  • 14. 

    What protocol stack is used over the S1-U interface?

    • GTP/UDP/IP/L1,L2

    • SCTP/UDP/IP/L1,L2

    • UDP/IP/L1,L2

    • SCTP/IP/L1,L2

    Correct Answer
    A. GTP/UDP/IP/L1,L2
    Explanation
    The S1-U interface uses the GTP/UDP/IP/L1,L2 protocol stack. This stack includes the GTP (GPRS Tunneling Protocol) for tunneling user data, UDP (User Datagram Protocol) for transport, IP (Internet Protocol) for addressing and routing, and L1,L2 (Layer 1, Layer 2) for the physical and data link layers of the network.

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  • 15. 

    ARP

    • Allocation retention priority

    • Allocation retention policy

    • Allocation restart priority

    • All referense points

    Correct Answer
    A. Allocation retention priority
  • 16. 

    IMS has a layered architecture.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    IMS (IP Multimedia Subsystem) is a telecommunications framework that enables the delivery of IP-based multimedia services. It follows a layered architecture, which means that it is structured into different layers, each responsible for specific functionalities. This layered architecture allows for modular design, easier maintenance, and scalability. Therefore, the statement that IMS has a layered architecture is true.

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  • 17. 

    DRX stands for...

    • Discontinious VOLTE quality

    • Discontinous reception

    • Discontinous RLF

    • Discontinous radio cascading

    Correct Answer
    A. Discontinous reception
    Explanation
    DRX stands for Discontinuous Reception. It is a power-saving feature in mobile networks where the device periodically switches off its receiver to conserve battery life. This allows the device to conserve power when there is no data to receive, and it periodically wakes up to check for any incoming data. Discontinuous reception helps to optimize battery usage in mobile devices while still maintaining connectivity to the network.

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  • 18. 

    Which node provides multimedia telephony service and supplementary services? 

    • MTAS

    • HSS

    • SBC

    • MRF

    Correct Answer
    A. MTAS
    Explanation
    MTAS stands for Multimedia Telephony Application Server, which is a node that provides multimedia telephony service and supplementary services. It is responsible for handling multimedia calls, such as voice and video calls, and also offers additional services like call forwarding, call waiting, and call transfer. MTAS plays a crucial role in enabling multimedia communication and enhancing the overall user experience in telephony services.

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  • 19. 

    The interface between S and P Gateway is

    • S11

    • S5

    • S8

    • Options B & C

    Correct Answer
    A. Options B & C
    Explanation
    The correct answer is Options B & C because the interface between the S and P Gateway can be either S5 or S8.

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  • 20. 

    Which of the following messages are Sip Responses

    • 100 Trying

    • PRACK

    • 408 Request Time out

    • Option A & C

    Correct Answer
    A. Option A & C
    Explanation
    The correct answer is "Option A & C" because both "100 Trying" and "408 Request Time out" are SIP responses. "100 Trying" is a provisional response indicating that the server has received the initial request and is processing it. "408 Request Time out" is a final response indicating that the server did not receive a timely response from the client and the request has timed out. "PRACK" is not a SIP response but a method used for provisional acknowledgment of a provisional response.

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  • 21. 

    UE sends out a Attach Request to the MME and identifies itself with

    • IMEA

    • PLMN ID

    • GUMMEI

    • GUTI

    Correct Answer
    A. GUTI
    Explanation
    The correct answer is GUTI. When a UE sends an Attach Request to the MME, it identifies itself using the GUTI (Globally Unique Temporary Identifier). The GUTI is a temporary identifier assigned to the UE by the MME and is used for identification and authentication purposes in the LTE network. It helps the MME to track and manage the UE's mobility and session information. The IMEA, PLMN ID, and GUMMEI are not used for identifying the UE during the Attach procedure.

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  • 22. 

    The protocol stack in the following figure is for __________________ interface

    • S1-C

    • S11

    • S1-U

    • X2

    Correct Answer
    A. S1-C
    Explanation
    The protocol stack in the figure is for the S1-C interface.

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  • 23. 

    TTI bundling is only benefitial for UE in ____

    • Good radio condition

    • Bad radio condition

    • Perfect radio condition

    • Indoor wifi

    Correct Answer
    A. Bad radio condition
    Explanation
    TTI bundling, or Transmission Time Interval bundling, is a technique used in wireless communication systems to improve the reliability and efficiency of data transmission. It involves combining multiple TTI intervals into a single transmission, which can be beneficial in bad radio conditions. In bad radio conditions, the signal quality may be poor, leading to a higher chance of errors and packet loss. By bundling multiple TTIs together, the chances of successfully receiving the data increase, as it allows for retransmissions and error correction mechanisms to be applied more effectively. Therefore, TTI bundling is particularly beneficial in bad radio conditions to improve the overall performance and reliability of the user equipment (UE).

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  • 24. 

    IMS stands for

    • IP Multimedia System

    • Internet protocol multimedia server

    • IP multimedia subsystem

    • IP Management subsystem

    Correct Answer
    A. IP multimedia subsystem
    Explanation
    IMS stands for IP multimedia subsystem. This is a framework that enables the delivery of multimedia services over IP networks. It provides a standardized architecture for integrating various communication services such as voice, video, messaging, and data. The IP multimedia subsystem allows for the seamless integration of different networks, devices, and applications, providing users with a consistent and unified experience across multiple platforms.

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  • 25. 

    One of the tasks performed by I-CSCF is

    • Perform user agent restriction

    • Assign S-CSCF during initial registration, in cooperation with HSS

    • Forking of multimedia functions

    • None of the above

    Correct Answer
    A. Assign S-CSCF during initial registration, in cooperation with HSS
    Explanation
    The I-CSCF (Interrogating-Call Session Control Function) is responsible for assigning the S-CSCF (Serving-Call Session Control Function) during the initial registration process, in cooperation with the HSS (Home Subscriber Server). The S-CSCF is the entity that handles call session control for a specific user, so it is important for the I-CSCF to assign the appropriate S-CSCF based on the user's registration information. This ensures that the user's call sessions are properly managed and routed within the IMS (IP Multimedia Subsystem) network.

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  • 26. 

    IMSI =

    • MCC+MNC+TAC

    • MCC+MNC+MMEI

    • MCC+MNC+MSIN

    • MCC+MNC+GUTI

    Correct Answer
    A. MCC+MNC+MSIN
    Explanation
    The correct answer is MCC+MNC+MSIN. IMSI stands for International Mobile Subscriber Identity and is a unique identifier for a mobile subscriber. It consists of three parts: MCC (Mobile Country Code), MNC (Mobile Network Code), and MSIN (Mobile Subscriber Identification Number). The MCC identifies the country, the MNC identifies the mobile network within the country, and the MSIN identifies the individual subscriber within the network. Therefore, the correct format for IMSI is MCC+MNC+MSIN.

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  • 27. 

    GUTI=

    • MCC+MNC+TAC

    • PLMN ID+S-TMSI

    • IMSI+TAI

    • GUMMEI+M-TMSI

    Correct Answer
    A. GUMMEI+M-TMSI
    Explanation
    The correct answer is GUMMEI+M-TMSI. GUTI stands for Globally Unique Temporary Identifier and it is composed of GUMMEI (Globally Unique MME Identifier) and M-TMSI (Mapped Temporary Mobile Subscriber Identity). GUMMEI is used to uniquely identify the Mobility Management Entity (MME) in a mobile network, while M-TMSI is a temporary identifier assigned to a mobile subscriber. Therefore, GUMMEI+M-TMSI is the correct combination to form the GUTI.

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  • 28. 

    Which nodes execute access transfer for SRVCC in IMS?

    • ATCF & SCC-AS

    • MTAS & S-CSCF

    • I-CSCF & P-CSCF

    • HSS & MTAS

    Correct Answer
    A. ATCF & SCC-AS
    Explanation
    ATCF (Access Transfer Control Function) and SCC-AS (Service Centralization and Continuity Application Server) nodes are responsible for executing access transfer for SRVCC (Single Radio Voice Call Continuity) in IMS (IP Multimedia Subsystem). These nodes facilitate the seamless handover of voice calls from LTE to 3G networks, ensuring uninterrupted service for the user.

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  • 29. 

    Initial Context Setup Request sent to eNB contains

    • RAND

    • IMEI

    • TEID

    • IP of SGW

    • Option C & D

    Correct Answer
    A. Option C & D
    Explanation
    The Initial Context Setup Request sent to eNB contains the IP of SGW and TEID. These two options are necessary for establishing the initial context between the eNB and the SGW. The IP of SGW is needed to establish the connection with the SGW, while the TEID (Tunnel Endpoint Identifier) is used to identify the specific tunnel between the eNB and the SGW. Therefore, both options C and D are correct.

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  • 30. 

    GUTI = GUMMEI + IMSI

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The equation GUTI = GUMMEI + IMSI is not true. The GUTI (Globally Unique Temporary Identifier) is not equal to the sum of the GUMMEI (Globally Unique MME Identifier) and IMSI (International Mobile Subscriber Identity). Therefore, the correct answer is false.

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  • 31. 

    Which interface connects the PGW and P-CSCF?

    • Sv

    • Sgi

    • Mw

    • Isc

    Correct Answer
    A. Sgi
    Explanation
    The interface that connects the PGW and P-CSCF is Sgi.

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  • 32. 

    What is the correct explanation of the error message – “408 Request Time out”? (Hint: Refer to RFC3261)

    • The request is retried by creating a new request with the appropriate modifications.

    • The server could not produce a response within a suitable amount of time

    • The callee's end system was contacted successfully, but the callee is currently not willing or able to take additional calls at this end system.

    • The response has the same meaning as 606 (Not Acceptable)

    Correct Answer
    A. The server could not produce a response within a suitable amount of time
    Explanation
    The error message "408 Request Time out" indicates that the server was unable to generate a response within a reasonable timeframe. This could be due to various reasons such as network congestion, server overload, or issues with the server's processing capabilities. The server may retry the request by creating a new request with appropriate modifications, but in this specific case, the error message simply signifies a timeout in receiving a response from the server.

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  • 33. 

    What message is generated by the system on a request timeout?

    • SIP 480

    • SIP 503

    • SIP 408

    • SIP 403

    Correct Answer
    A. SIP 408
    Explanation
    When a request timeout occurs, the system generates the message "SIP 408". This message indicates that the server was unable to respond to the request within the allocated time.

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  • 34. 

    PCRF and SBG talk to each other using

    • GTP - C protocol

    • GTP - U Protocol

    • Diameter Protocol

    • SIP protocol

    Correct Answer
    A. Diameter Protocol
    Explanation
    PCRF (Policy and Charging Rules Function) and SBG (Serving and Border Gateway) communicate with each other using the Diameter Protocol. Diameter is an authentication, authorization, and accounting (AAA) protocol used in telecommunications networks. It provides a secure and reliable way for PCRF and SBG to exchange information and perform functions such as policy control and charging. GTP-C (GPRS Tunneling Protocol - Control Plane), GTP-U (GPRS Tunneling Protocol - User Plane), and SIP (Session Initiation Protocol) are also used in telecommunications networks, but they are not specifically mentioned in the question as the protocol used for communication between PCRF and SBG.

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  • 35. 

    A dialogue contains the following

    • Multiple Transactions with same call id

    • Multiple Charging Vectors

    • Call id and Tags

    • Options A & C

    Correct Answer
    A. Options A & C
    Explanation
    The correct answer is Options A & C because a dialogue that contains multiple transactions with the same call id and multiple charging vectors, as well as call id and tags, would include both options A and C. Multiple transactions with the same call id indicate that there are multiple interactions or exchanges happening within the dialogue. Multiple charging vectors suggest that different charging methods or rates are being applied. And the presence of call id and tags indicates that there is a way to identify and categorize different parts of the dialogue.

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  • 36. 

    ___ QCI is associated to __ DRX profile 

    • Each , 2

    • Each, 1

    • Each, 0

    • Each 19

    Correct Answer
    A. Each, 1
    Explanation
    QCI stands for Quality of Service Class Identifier and is used in LTE networks to prioritize different types of data traffic. DRX stands for Discontinuous Reception and is a power-saving feature in LTE networks. The QCI is associated with the DRX profile to determine the level of power saving and resource allocation for a specific type of data traffic. In this case, the correct answer is "Each, 1" which means that each QCI is associated with a DRX profile of 1, indicating a moderate level of power saving and resource allocation.

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  • 37. 

    VOLTE signaling goes via

    • QCI1

    • QCI5

    • QCI8

    • Indoor

    Correct Answer
    A. QCI5
    Explanation
    The correct answer is QCI5 because QCI stands for Quality of Service Class Identifier, which is used in LTE networks to prioritize different types of traffic. QCI5 is specifically used for VoLTE (Voice over LTE) signaling, which means that the signaling for voice calls over LTE networks is sent using QCI5. This ensures that the signaling for VoLTE is given the appropriate priority and quality of service to ensure a reliable and high-quality voice call experience.

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  • 38. 

    The interface between PCRF and IMS is __________. Refer to Figure below.

    • Gx

    • Rx

    • Sgi

    • S8

    Correct Answer
    A. Rx
    Explanation
    The interface between PCRF and IMS is Rx. Rx is a reference point defined by the 3GPP (Third Generation Partnership Project) for the control plane interaction between the PCRF (Policy and Charging Rules Function) and the IMS (IP Multimedia Subsystem). It is responsible for the exchange of policy and charging related information between these two network elements.

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  • 39. 

    Which node provides the possibility to offer IMS centralized services (ICS) and single radio voice call continuity (SR-VCC)?

    • HSS

    • S-CSCF

    • MTAS

    • SCC-AS

    Correct Answer
    A. SCC-AS
    Explanation
    The SCC-AS (Service Centralization and Continuity Application Server) node provides the possibility to offer IMS centralized services (ICS) and single radio voice call continuity (SR-VCC). The SCC-AS is responsible for managing and coordinating the centralized services in the IMS network, allowing for seamless handover of voice calls between different access networks. It ensures that the user experience remains uninterrupted and consistent, regardless of the network technology being used.

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  • 40. 

    What message indicates that the system is unable to process the request because the message length exceeded its capabilities?

    • SIP 403

    • SIP 500

    • SIP 408

    • SIP 513

    Correct Answer
    A. SIP 513
    Explanation
    SIP 513 indicates that the system is unable to process the request because the message length exceeded its capabilities.

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  • 41. 

    The Dedicated Bearers “belongs/linked” to a default bearer and will use the same user plane IP address as the default bearer to which it belong. 

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because the Dedicated Bearers are connected to a default bearer and they will utilize the same user plane IP address as the default bearer they are associated with. This means that the Dedicated Bearers will share the same IP address as the default bearer, ensuring seamless communication and connectivity between them.

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  • 42. 

    Which of the following codecs can be used for HD voice?

    • 12.2 AMR

    • 12. 65 AMR - WB

    • 4.75 AMR

    • All of the above

    Correct Answer
    A. 12. 65 AMR - WB
    Explanation
    The codec 12.65 AMR-WB can be used for HD voice.

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  • 43. 

    If the UE sends out an Attach Request with an unknown GUTI then...

    • MME rejects ATTACH request

    • MME sends out Identity Request to UE

    • MME accepts ATTACH request

    • None of the above

    Correct Answer
    A. MME sends out Identity Request to UE
    Explanation
    When the UE sends out an Attach Request with an unknown GUTI (Globally Unique Temporary Identifier), it means that the MME (Mobility Management Entity) does not recognize the GUTI provided by the UE. In this case, the MME will send out an Identity Request to the UE. This request is sent to obtain the UE's identity information, such as the IMSI (International Mobile Subscriber Identity) or the IMEI (International Mobile Equipment Identity), in order to validate and authenticate the UE before proceeding with the Attach procedure.

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  • 44. 

    If the UE has set the EPS Session Management (ESM) Information Transfer flag in the PDN Connectivity Request message, the MME

    • Sends Identity Request

    • Sends out ESM reject message

    • Deletes UE's existing context

    • Send ESM Information Request

    Correct Answer
    A. Send ESM Information Request
    Explanation
    If the UE has set the EPS Session Management (ESM) Information Transfer flag in the PDN Connectivity Request message, it indicates that the UE wants to transfer ESM information to the network. In this case, the MME will send an ESM Information Request to the UE, requesting the necessary information. This allows the network to gather the required ESM information from the UE for further processing and establishment of the session.

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  • 45. 

    The protocol stack found below is for __________________ interface 

    • S11

    • S5

    • S8

    • All the above

    Correct Answer
    A. All the above
    Explanation
    The given protocol stack includes S11, S5, and S8 interfaces. Therefore, the correct answer is "All the above" as it encompasses all the mentioned interfaces.

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  • 46. 

    Standards for VoLTE are defined in

    • RFC3261

    • 3GPP - Release 8

    • GSMA IR.92

    • None of the above

    Correct Answer
    A. GSMA IR.92
    Explanation
    GSMA IR.92 is the correct answer because it is a technical specification developed by the GSM Association (GSMA) that specifically defines the standards for Voice over LTE (VoLTE). RFC3261 is a standard for the Session Initiation Protocol (SIP) used in VoIP, but it does not specifically define VoLTE standards. 3GPP - Release 8 is a set of standards for mobile communications, but it does not specifically focus on VoLTE. Therefore, the correct answer is GSMA IR.92.

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  • 47. 

    RRC Re-establishement benefit are 

    • VOLTE call can survive a RLC

    • VOLTE call can survive TTI bundling

    • VOLTE call can perform SRVCC

    • VOLTE call can survive a RLF

    Correct Answer
    A. VOLTE call can survive a RLF
    Explanation
    RRC re-establishment is a procedure in LTE where the connection between the UE (User Equipment) and the network is re-established after a temporary interruption. RLF (Radio Link Failure) refers to the loss of communication between the UE and the eNodeB (base station). The given answer suggests that a VOLTE (Voice over LTE) call can survive a RLF, meaning that even if there is a failure in the radio link, the VOLTE call will not be interrupted and will continue to function.

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  • 48. 

    ________  interface enables the PCRF to provision PCC Rules.

    • Gx

    • Rx

    • Sgi

    • None of the above

    Correct Answer
    A. Gx
    Explanation
    The Gx interface enables the PCRF (Policy and Charging Rules Function) to provision PCC (Policy and Charging Control) rules. This interface allows the PCRF to communicate with other network elements such as the Policy and Charging Enforcement Function (PCEF) to control and enforce policies related to charging and quality of service (QoS) for subscribers. Through the Gx interface, the PCRF can send PCC rules to the PCEF for implementation, ensuring that the appropriate policies are applied to the subscriber's data sessions.

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  • 49. 

    Which node has the function to provide the encryption and authentication keys of the user?

    • HSS

    • S-CSCF

    • MTAS

    • I-CSCF

    Correct Answer
    A. HSS
    Explanation
    The Home Subscriber Server (HSS) is the node that provides the encryption and authentication keys of the user. It stores the subscriber's information, including the keys used for encryption and authentication, and is responsible for authenticating and authorizing the user's access to the network. The HSS plays a crucial role in ensuring the security and privacy of the user's communications.

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Quiz Review Timeline (Updated): Nov 13, 2024 +

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  • Current Version
  • Nov 13, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Nov 25, 2013
    Quiz Created by
    SANDHYA RUDRARAJU
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