Alcatel-Lucent 4A0-M02 問題集

質問 1：
Which of the following statements is FALSE regarding the keep alive messages exchanged between the CPM card and an MG-ISM card?
A. The keep alive messages are exchanged between the CPM card and the standby MG-ISM card
B. The CPM card considers the MG-ISM card down if it misses 3 keep alive messages.
C. The keep alive messages are exchanged between the CPM card and the active MG-ISM card.
D. The keep alive messages are exchanged between the active and standby MG-ISM cards.
正解：D

質問 2：
Which network entities assign TEIDs to the indirect data tunnel used during an S1-based handover with no SGW relocation?
A. The source eNodeB and the SGW.
B. The source eNodeB, the SGW, and the target eNode
C. The SGW and the target eNodeB.
D. The source eNodeB and the target eNodeB.
正解：C

質問 3：
Which of the following interfaces is not using the GTP-U protocol?
A. The S4 interface
B. The S1-U interface
C. The SGi interface
D. The S5 interface
E. The X2 interface
正解：C

質問 4：
Which of the following statements is FALSE regarding the communication between a UE and an eNodeB?
A. During an IMSI attach, the UE informs the eNodeB which MME should be used to service it.
B. The eNodeB performs the compression and encryption of the user data stream.
C. The eNodeB transmits the paging messages to an idle UE when the paging is required.
D. A UE must go through an eNodeB to access the EPC core.
E. The eNodeB terminates the air interface of the UE and manages the radio connection between the UE and the eNodeB.
正解：A

質問 5：
Based on the information shown in the exhibit, how many EPS bearers has the PGW created in total for all UEs?

A. 2
B. 3
C. 4
D. 6
E. 1
F. 5
正解：D

質問 6：
Which of the following statements is TRUE regarding the IP connectivity between a UE and a PDN?
A. A PGW forwards the UE's IP packets to the PDN based on the address of the PDN server.
B. When a UE sends an IP packet to a PDN over the EPC core, the eNodeB forwards theencapsulatedpacket to the SGW by looking into its IP routing table to determine how to reach the PDN server.
C. The SGW forwards the UE's IP packets to the PGW based on the address of the PDN server.
D. Only answers C and D are correct.
E. Only answers A and B are correct.
F. A UE gets an IPv4 address and/or an IPv6 prefix per APN.
正解：E

質問 7：
Based on the information shown in the exhibit, what is the TEID value 0x37 used for?

A. This TEID value is used by the source eNodeB when sending downlink data traffic to the SGW.
B. This TEID value is used by the SGW when sending downlink data traffic to the source eNodeB.
C. This TEID value is used by the source eNodeB when sending downlink data traffic to the target eNodeB.
D. This TEID value is used by the SGW when sending downlink data traffic to the target eNodeB.
E. This TEID value is used by the target eNodeB when sending uplink data traffic to the SGW.
正解：D