Alcatel-Lucent 4A0-105시험은 국제적으로 승인해주는 IT인증시험의 한과목입니다. 근 몇년간 IT인사들에게 최고의 인기를 누리고 있는 과목으로서 그 난이도 또한 높습니다. 자격증을 취득하여 직장에서 혹은 IT업계에서 자시만의 위치를 찾으련다면 자격증 취득이 필수입니다.Alcatel-Lucent 4A0-105시험을 패스하고 싶은 분들은 Pass4Test제품으로 가보세요.

NO.1 What is the default fdb size for a VPLS service?
A. 100
B. 1
C. 25
D. 250
Answer: D

NO.2 When spanning tree is enabled within a VPLS service and the STP mode is 802.1 D 2004 what
happens if a PVST BPDU is received on a SAP?
A. Spanning tree will be disabled on the SAP that the PVST BPDU was received on.
B. The SAP that the PVST BPDU was received on will be disabled to prevent loops.
C. The spanning tree encapsulation will be dynamically changed to PVST on the SAP the PVST BPDU
was received on.
D. The PVST BPDU will be ignored and 802.1D 2004 BPDUs will continue to be transmitted on the
SAP .
Answer: C

NO.3 How does the IEEE 802.1ag loopback function differently from the loopback feature in 802.3ah?
(Choose 2)
A. Theloopbackfuntionin802.1ag is an intrusive test that will stop customer data.
B. The loopback function of 802.lag is a non-intrusive "ping" sent from a MEPto a remote MEP or
MIP .
C. The loopback function in 802.3ah is an intrusive test that will loop customer data.
D. The loopback function of 802.lag is an intrusive test that will "loop" all customer data back to the
original sender.
Answer: B,C

NO.4 To reduce the amount of flooding between PE devices which of the following steps
shouldbetaken?
A. Configure the local age timer to be larger.
B. Configure the local age timer to be lower.
C. Configure the remote age timer to be larger.
D. Configure the remote age to be lower.
Answer: C

NO.5 Which of the following is a function of the data plane that must be considered when
provisioning a VPLS service?
A. Number of LSPs.
B. Number of TLDP sessions.
C. Number of SDPs.
D. MAC address consumption in the FDB.
E. Bandwidth and replication requirements.
Answer: E

NO.6 Why should you configure send-flush-on failure on your PE routers when using
active/standby pseudowires?
A. It flushes the local FDB speeding recovery
B. It discards all packets in the queue and sends icmp-discad messages to the sender. The packets
are re-transmitted resulting in no loss of data.
C. On failure, the PE sends an LDP flush-all-from-me message to all PE devices in the VPLS. This
speeds convergence to the new topology.
D. It is not important to use send-flush-on-failure as Active/Standby signalling automatically
converges the FDB in all VPLS instances
Answer: C

NO.7 Why is MAC explosion a factor to be considered when designing a large VPLS network?
(Choose 2)
A. The time to relearn thousands of MAC addresses may result in excessive flooding or loss of
packets.
B. If the FDB reaches the limit, the router will discard frames.
C. Discarding frames when the FDB limit is reached could deny SLA guarantees.
D. It could take several seconds to relearn thousands of MAC addresses denying QoS/SLA
guarantees.
Answer: A,D

NO.8 What is the default remote-age timer of a B-VPLS?
A. The same timer is used in all VPLS types.
B. Higher than the default timer of an I-VPLS.
C. Lower than the default timer of an l-VPLS.
D. The same timer as an l-VPLS.
Answer: C