單項選擇題To which of these does IP multicast send packets?()

A. a single host
B. a subset of hosts
C. all hosts sequentially
D. all hosts simultaneously


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1.單項選擇題Which of these ports does syslog use to send messages to a syslog server?()

A.TCP502
B.TCP514
C.TCP520
D.UDP502
E.UDP514
F.UDP520

2.單項選擇題Which of these is a benefit of ESM?()

A. supports multiple MIBs
B. includesNetFlow, NBAR, and IP SLA software subsystems
C. includesNetFlow, syslog, and IP SLA software subsystems
D. includes a predefined framework for filtering and correlating messages
E. supports two logging processes so output can be sent in standard and ESM format

3.單項選擇題How does ERS use the VLAN tag?()

A. to provide service internetworking
B. to support transparency for Layer 2 frames
C. as a connection identifier to indicate destination
D. as a mapping to the DLCI in service internetworking
E. to provide a trunk by which all VLANs can navigate from one site to one or multiple sites

4.單項選擇題Your MPLS implementation is currently using internal backdoor links. What can you do to minimize the impact of having these links?()

A. use BGP as the CE-PE routing protocol
B. use OSPF as the CE-PE routing protocol
C. use EIGRP as the CE-PE routing protocol
D. use the SP to redistribute routes as external routes for OSPF and EIGRP
E. use route redistribution at each location to ensure external routes are imported into the IGP

5.多項選擇題Which two of these are characteristics of MPLS VPNs?()

A. Layer 3 MPLS VPNs can forward only IP packets
B. Layer 2 MPLS VPNs can forward any network protocol
C. MPLS label paths are automatically formed based on Layer 2 frames
D. Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 frames
E. In Layer 2 MPLS VPNS, the service provider controls the customer Layer 3 policies

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