4A0-M02 : Alcatel-Lucent Mobile Gateways for the LTE Evolved Packet Core Exam

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Alcatel-Lucent
4A0-M02
Alcatel-Lucent Mobile Gateways for the LTE Evolved
Packet Core
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Which of the following interfaces is not using the GTP-U protocol?
A. The X2 interface
B. The S1-U interface
C. The S4 interface
D. The S5 interface
E. The SGi interface
Answer: E
QUESTION: 126
When a UE is roaming, which of the following interfaces is used when the visiting SGW
needs to communicate with the UE's home PGW?
A. TheS1 interface.
B. The S5 interface.
C. The S8 interface.
D. The S10 interface.
E. The SGi interface.
Answer: C
QUESTION: 127
Which of the following statements is FALSE regarding the EPS bearers?
A. An EPS bearer is either a GBR bearer or a Non-GBR bearer.
B. An EPS bearer is either a default bearer or a dedicated bearer.
C. A dedicated bearer can be a GBR or a Non-GBR bearer.
D. A default bearer can be a GBR or a Non-GBR bearer.
E. A UE can have multiple GBR or Non-GBR bearers.
Answer: D
QUESTION: 128
On Alcatel-Lucent 7750 SGW, which of the following CLI commands is used to obtain
the output displayed in the exhibit?
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A. Show mobile-gateway serving ref-point-stats s11
B. Show mobile-gateway serving ref-point-stats s5
C. Show mobile-gateway serving ref-point-stats s11 instance
D. Show mobile-gateway serving ref-point-stats s5 instance
Answer: D
QUESTION: 129
In an LTE network, which of the following is used to carry the GTP message "Create
Session Request"?
A. The GTPv1 protocol.
B. The GTPv2 protocol.
C. Both the GTPv1 and the GTPv2 protocols.
D. Either the GTFV1 protocol or the GTPv2 protocol.
E. None of the above answers are correct.
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Answer: B
QUESTION: 130
Based on the information shown in the exhibit, when the SGW sends a "Create Session
Request" message to the PGW, which of the following is the source IP address expected
in the IP packet?




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A. 10.10.2.1
B. 10.10.7.1
C. 20.20.0.1
D. 72.22.24.163
E. None of the above answers are correct
Answer: B
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QUESTION: 131
On the Alcatel-Lucent 7750 MG, which of the following is the CLI command to check
the active / standby state of the MG-ISM cards?
A. Show card detail
B. Show mda detail
C. Show card state
D. Show system information
E. Show mobile-gateway system
Answer: E
QUESTION: 132
Which of the following statements is FALSE regarding the UE attachment procedure?
A. As a result of this procedure, a default bearer must be established
B. As a result of this procedure, a dedicated bearer must be established
C. As a result of this procedure, the UE is registered with the network
D. As a result of this procedure, the UE is authenticated by the network
E. As a result of this procedure, the UE has an IP connectivity to an APN
Answer: B
QUESTION: 133
Which of the following statements is FALSE regarding the UE mobility?
A. While in idle state, the UE mobility can trigger a handover.
B. While in idle state, the UE mobility can trigger a tracking area update.
C. While in connected state, the UE mobility can trigger a handover.
D. While in connected state, the UE mobility can trigger a tracking area update.
E. None of the above statements are false.
Answer: A
QUESTION: 134
A UE is exchanging best-effort (BE) IP traffic with a PDN server over an EPS bearer
with a QCI/ARP value of 9/12. Based on the information shown in the exhibit, what is
the DSCP value of traffic egressing the S5 interface of the PGW to the SGW?
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A. BE
B. EF
C. AF21
D. NC
E. None of the above answers are correct
Answer: B
QUESTION: 135
Which of the following statements is FALSE regarding the PGW?
A. The PGW terminates the IP sessions from a UE.
B. The PGW enforces PCC rules and QoS policies.
C. The PGW may provide gating control for user traffic.
D. A UE may be served by only one PGW.
E. A UE may receive more than one IP address from the PGW.
Answer: D
QUESTION: 136
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A UE needs to get an IP address before it can communicate to any PDN over the LTE
network. Which of the following statements most accurately describes the process of the
IP address allocation?
A. A UE may obtain an IP address during the PDN connection setup.
B. A PGW may assign the IP address from its local address pools.
C. A PGW may obtain an IP address from a RADIUS server and assign it to the UE.
D. A PGW may obtain an IP address from a DHCP server and assign it to the UE.
E. All of the above answers are correct.
Answer: E
QUESTION: 137
Based on the information shown in the exhibit, how many EPS bearers has the PGW
created in total for all UEs?

A. 6
B. 5
C. 4
D. 3
E. 2
F. 1
Answer: A
QUESTION: 138
Based on the information shown in the exhibit, which of the following is the time interval
used by the SGW to send out an "Echo Request" message over the S11 interface?
A. 130 seconds
B. 90 seconds
C. 60 seconds
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D. 8 seconds
E. 4 seconds
Answer: C
QUESTION: 139
On the Alcatel-Lucent 7750 PGW, which of the following is the CLI command to check
the statistics of the "Create Session Request" / "Create Session Response" messages?
A. Show mobile-gateway pdn ref-point-peers gx
B. Show mobile-gateway pdn ref-point-peers s5
C. Show mobile-gateway pdn ref-point-stats ga
D. Show mobile-gateway pdn ref-point-stats s5
E. None of the above answers are correct.
Answer: D
QUESTION: 140
On Alcatel-Lucent 7750 PGW, which of the following statements is FALSE regarding
the debugging of a given IMSI?
A. The output may be filtered per bearer.
B. The APN value must be specified in the debug command.
C. A log must be created to view the debug output.
D. The output may be filtered per APN and per reference point.
E. None of the above statements are false.
Answer: D

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