- 1 - 18/9/2013 Khan, Yasser Your Score: 87/100 Your results: This report presents your overall score of the assessment as a percentage of maximum score. You also find your score per area. If you need to improve your knowledge in any area you will find related training at the LTE/EPC Competence Space. You can also choose to restart the test or review your answers per question. You also have the possibility to print all questions and your answers. LTE L10A RAN/eNodeB Mobility Troubleshooting Techniques How can we obtain internal and external cell level events in an RBS? CELL Trace • UE Trace • UETR • GPEH • Your answers: 1 LTE L10A RAN/eNodeB Mobility Troubleshooting Techniques During S1 handover, which message contains the optional Trace Reference information? S1AP Handover Request Acknowledge. • S1AP Handover Required. • S1AP Handover Notify. • S1AP Handover Request. •
Transcript
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18/9/2013
Khan, Yasser
Your Score: 87/100
Your results: This report presents your overall score of the assessment as a percentage of maximum score. You also find your score per area.
If you need to improve your knowledge in any area you will find related training at the LTE/EPC Competence Space.
You can also choose to restart the test or review your answers per question. You also have the
possibility to print all questions and your answers.
LTE L10A RAN/eNodeB Fundamental Troubleshooting Techniques
From which network elements can the UE Trace Reference be set from?
OSS-RC and RBS•OSS-RC and MME•OSS-RC only•MME and RBS•
Your answers: 2
LTE L10A RAN/eNodeB Fundamental Troubleshooting Techniques
Which tool provides command line decoding of ASN.1 encoded messages?
terouter•teviewer•decode•ltedecoder•
Your answers: 4
LTE L10A Throughput Troubleshooting Techniques
Tracing on the RBS shows that a UE is experiencing excessive RLC retransmissions.
This implies transport issues.•This implies RRC signaling issues.•This implies radio issues.•This implies baseband processing issues.•
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Your answers: 3
LTE L10A Throughput Troubleshooting Techniques
In a 3 x 1 site using 20 MHz channel bandwidth and configured with 2x2 MIMO, the DUL-20 has established a 1 GB Ethernet mode of operation towards the site router. If 3 individual UEs are connected to each of the cells in excellent radio conditions, where will the throughput
bottleneck likely occur?
On the air interface due to interference.•On the DUL due to baseband capacity.•On the S1-U interface due to 3 user payload•On the S1-MME due to signaling load.•
Your answers: 2
IP Troubleshooting Techniques
Why use the MME in pool?
MME in pool is not recommended.•MME in pool provides load sharing.•MME in pool can not be configured.•MME needs to be configured in pool whenever they are sharing the same MPG/CPG.•
Your answers: 2
IP Troubleshooting Techniques
Which QoS parameters are transmitted in the E-RAB Setup Request?
Provides Acknowledged and Unacknowledged Data transfer from data coming from Upper •Layers.Provides notification of HARQ delivery failure.•Provides notification of a transmission opportunity.•Expects notification of HARQ delivery failures from PDCP.•
Your answers: 1
IP Troubleshooting Techniques
The S1-AP (S1 Application Protocol) is responsible for:
The user plane between eNodeB and the S-GW over the S1 interface.•The control signaling between eNodeB and MME over the S1 interface.•The control signaling between eNodeB and HSS.•The user plane between eNodeB and the P-GW over the S1 interface.•
Your answers: 2
IP Troubleshooting Techniques
Which is the correct order to follow in the QoS process?
What does the On-site integrator do while performing Autointegration?
He/she initiates the AutoIntegration procedure by specifying where/how to get the configuration •files/parameters, rest is auto.By providing the SiteBasic file, he/she makes the O&M configuration in the RBS; the rest will be •downloaded from the servers.He/she provides the SMRS IP address. Everything that is required is in the SMRS server.•He/she gives the IP address of the OSS-RC. Everything that is required is in the OSS-RC.•
Your answers: 1
L10A eNodeB Configuration / Integration
Which command in the MO-shell is used to work with (most of the) logs?
al•logs•lg•llog•
Your answers: 3
L10A eNodeB Configuration / Integration
Which one of the following is true about integration procedure?
Autointegration means the RBS automatically integrates once it is powered on.•
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SMRS is always required for manual integration.•A DHCP server is required to provide the IP address to the eNodeB in all integration procedures.•If performing Autointegration, in the BSIM user interface, one must check the Auto Integration •option.
Your answers: 4
L10A eNodeB Configuration / Integration
In which two applications (user interfaces) does the operator fill in required information during
RBS Autointegration?
OSS Network Explorer (ONE) and Base Station Integration Manager (BSIM).•BSIM and Bulk Configuration Manager (BCM).•Common Explorer (CEX) and BSIM.•BSIM and Element Manager (EM).•
Your answers: 4
CPP
The Alarm Log and the Event Log is stored on which volume in the File System?
The ANR feature only updates the neighbor list in the RBS.
True•False•
Your answers: 2
SON Overview
SON will require additional operations personal to manage.
True•False•
Your answers: 2
SON Overview
When the ANR feature is activated, only neighbor cell relationships identified by the RBS can be
added to the neighbor cell list.
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True•False•
Your answers: 2
SON Overview
Operator want to implement SON functions which allow automation in order to...
Lower network Opex.•Speed up network rollouts.•Increase automation in the network to reduce manual work.•Increase the number of optimization staff required to manage the network.•
Your answers: 1 2 3
LTE Configuration and Integration Tools
What are the LTE L10 specific applications in the CCR?
LTE Autointegration, LTE Manual integration and LTE On-site.•LTE Autointegration, LTE Manual integration, LTE ARNE and LTE cell.•LTE BSIM, LTE ARNE, LTE BCM, LTE On-site and LTE Neighbor relations.•LTE Integration, LTE ARNE and LTE Cell.•
Your answers: 3
LTE Initial Tuning / Optimization
Determine the message which will increment the “pmErabSuccAdded” counter.
What is the interface between an eNodeB and an MME called?
S1-UP•
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S1-CP•X2-CP•X2-UP•
Your answers: 1
LTE/EPC Overview
Which of the following nodes can you find in E-UTRAN (LTE)?
eNodeB•MME•S-GW•P-GW•
Your answers: 1
LTE/EPC Overview
Which of the following statements are true?
LTE is a 3GPP work item and not the actual network.•EPC is a 3GPP work item and not the actual network.•SAE is a 3GPP work item and not the actual network.•E-UTRAN is a 3GPP work item and not the actual network.•
Your answers: 2 4
OSS-RC functionality for LTE
With respect to Performance Measurement, OSS-RC provides the following:
Performance Mediation - administering which performance information is collected.•Performance Formulation - managing KPI's based on formulation of performance counters.•
Your answers: 2
OSS-RC functionality for LTE
AMOS does NOT provide which function:
Read NE Trace and Error Logs.•MO Configuration Service.•Batch Scripting.•Graphical representation of MOs.•
Your answers: 4
OSS-RC functionality for LTE
BSIM stands for:
Base Station Instant Messenger•Base Station Integration Manager•Baseband Server Information Model•Basic Service Iteration Milestone•
Your answers: 2
OSS-RC functionality for LTE
Which of these is NOT an OSS-RC Application?
SMO - Software Management Organizer.•Alarm List Viewer.•
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EM - Element Manager.•CEX - Common Explorer.•
Your answers: 3
Ericsson Offering
IPRAN and MPBN are...
...features in MME and eNB to support transport network.•
... services for transport network.•
...solutions for transport network.•
... a set of transport network products.•
Your answers: 3
RBS6000 Overview
Which unit is responsible for LTE traffic?
RUL•RUW•RUG•DUL•
Your answers: 1
RBS6000 Overview
What is the interface between e-NodeB and EPC nodes?
X2 Interface.•Abis Interface.•
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A-ter Interface.•S1 Interface.•
Your answers: 4
L10A Functionality and Features
Which event triggers IRAT Session Continuity?
A2•A3•A5•A1•
Your answers: 1
L10A Functionality and Features
Which of the following is included in the Optional Package:
MIMO•Synchronization using GPS•Traffic Security •Multiple Radio Bearers•
Your answers: 1 4
L10A Functionality and Features
Identify scenario/s when an NTP solution is desirable, compared to using GPS as a clock
source for TN Synchronization:
The provision of an external clock source at the eNodeB site is not•
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preferred due to different site restrictions or because the there is no easy way to obtain an •unrestricted view of the sky for a GPS unit.The time accuracy of the NTP solution is good enough.•The time accuracy of the GPS solution is not good enough.•
Your answers: 1 2
L10A Functionality and Features
Which of the following is included in the Basic Package?
Idle Mode Support•Paging•X2 Handover•Multiple Radio Bearers•
Your answers: 1 2
Licensing in LTE
Which of the following four statements is correct:
Licenses ARE ordered TOGETHER with LTE RBS hardware, licenses ARE NOT installed in •LTE RBS at factory prior to delivery, licenses ARE matched to the Unique Logical Name (ULN) of LTE RBS.Licenses ARE ordered SEPARATELY from ordering LTE RBS hardware, licenses ARE NOT •installed in LTE RBS at factory prior to delivery, licenses ARE matched to the Unique Logical Name (ULN) of LTE RBS.Licenses ARE ordered TOGETHER with LTE RBS hardware, licenses ARE installed in LTE •RBS at factory prior to delivery, licenses ARE matched to the Unique Logical Name (ULN) of LTE RBS.Licenses ARE ordered TOGETHER with LTE RBS hardware, licenses ARE NOT installed in •LTE RBS at factory prior to delivery, licenses ARE NOT matched to the Unique Logical Name (ULN) of LTE RBS.
Your answers: 2
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Licensing in LTE
To configure a radio unit with 60 Watts (W), which license/s need to be installed?
Only a 60 W license.•One 20 W and one 40 W license.•One 40 W and one 60 W license.•One 20 W, one 40 W and one 60 W license.•
Your answers: 3
Performance Management for LTE
Which KPI area is this formula taken from? N X M X 900 – (pmCellDowntimeAuto-
LTE feature licenses and the respective software keys, are generated by which important
application/tool in the license ordering process?
Operation and Support System Radio and Core (OSS-RC).•Software Gateway (SW GW).•Electronic Licensing Solution (ELIS).•Mobility Management Entity (MME).•
Your answers: 3
RBS6000 Installation
What is the operating voltage of the hardware units in the RBS?
At handover to a new cell.•Once every radio frame.•At Initial access.•At scheduling assignments.•
Your answers: 3
LTE Air Interface
The cell search procedure uses:
PDCCH•The primary and secondary sync signals.•PDSCH•PUCCH•
Your answers: 1
LTE Air Interface
What is the difference between HARQ and RLC ARQ?
HARQ is located in MAC and is quicker and uses soft combining.•HARQ is more robust and accurate.•HARQ is located in the physical layer.•HARQ is slower due to the soft combining.•
