多項(xiàng)選擇題Which two design recommendations are most appropriate when OSPF is the data center core routing protocol? ()

A. Never use passive interfaces.
B. Use NSSA areas from the core down.
C. Use totally stub areas to stop type 3 LSAs.
D. Use the lowest Ethernet interface IP address as the router ID.
E. Tune OSPF timers to enable OSPF to achieve quicker convergence.


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1.單項(xiàng)選擇題Which of the following is a characteristic of a data center core?()

A. Server-to-server traffic always remains in the core layer.
B. The recommended practice is for the core infrastructure to be in Layer 3.
C. The boundary between Layer 2 and Layer 3 should be implemented in the aggregation layer.
D. The Cisco Express Forwarding hashing algorithm is the default, based on the IP address and Layer 4 port.
E. Core layer should run BGP along with an IGP becauseiBGP has a lower administrative distance than any IGP.

2.多項(xiàng)選擇題Which two of these multicast deployments are most susceptible to attacks from unknown sources?()

A.ASM
B.BiDirPIM
C.PIM-SMRP
D.RP-Switchover
E.SourceSpecificMulticast

3.單項(xiàng)選擇題What is the default value of the SPT threshold in Cisco routers?()

A. 0
B. 1
C. 2
D. 4
E. 16
F. infinity

4.單項(xiàng)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

5.單項(xiàng)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

6.單項(xiàng)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

7.單項(xiàng)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

8.單項(xiàng)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

9.多項(xiàng)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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During consultation, you find that a customer has multiple asset closets and will be adding more in the future. Which NAS physical deployment model would you suggest to this customer?()

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