Which two statements correctly describe a situation in which an Active/Standby Service Module design is being used？ （）

多项选择题WhichtwodesignrecommendationsaremostappropriatewhenEIGRPisthedatacentercoreroutingprotocol？（）

A. Summarize data center subnets.
B. Use passive interfaces to ensure appropriate adjacencies.
C. Tune the EIGRP timers to enable EIGRP to achieve quicker convergence.
D. Adjust the default bandwidth value to ensure proper bandwidth on all links.
E. Advertise a default summary route into the data center core from the aggregation layer.

多项选择题WhichtwodesignrecommendationsaremostappropriatewhenOSPFisthedatacentercore routingprotocol？（）

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

单项选择题Whichofthefollowingisacharacteristicofadatacentercore？（）

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 andLayer 4 port.
E. Core layer should run BGP along with an IGP because iBGP has a lower administrativedistance than any IGP.

多项选择题Whichtwoofthesemulticastdeploymentsaremostsusceptibletoattacksfromunknownsources？（）

A. ASM
B. BiDir PIM
C. PIM-SM RP
D. RP-Switchover
E. Source Specific Multicast

单项选择题WhatisthedefaultvalueoftheSPTthresholdinCiscorouters？（）

A. 0
B. 1
C. 2
D. 4
E. 16
F. infinity