642-885 무료 덤프문제 온라인 액세스

Which IPv6 mechanism occurs between a provider edge router and the customer premises equipment router to allow an ISP to automate the process of assigning a block of IPv6 addresses to a customer for use within the customer network?

• A.DHCPv6 Prefix Delegation
• B.Router Advertisement
• C.DHCPv6 Lite
• D.Stateful DHCPv6

Which multicast implementation is preferred for traffic that is required by a small number of receivers across a large distributed network?

• A.PIM-SM
• B.PIM-DM
• C.DVMRP
• D.IGMP

Refer to the exhibit.

Based on the output of two eBGP adjacent neighbors, which command can be used to set up the default BGP timers?

• A.RP/0/0/CPU0:R1(config-bgp)#timers bgp 60 30
• B.RP/0/0/CPU0:R2(config-bgp)#timers bgp 30 60
• C.RP/0/0/CPU0:R2(config-bgp-nbr)#timers bgp 180 60
• D.RP/0/0/CPU0:R1(config-bgp)#timers bgp 60 180
• E.RP/0/0/CPU0:R2(config-bgp)#timers bgp 60 180

Which protocol can be used to secure multicast in a group multicast solution where group key management is needed for secure key exchange?

• A.ISAKMP
• B.IPsec
• C.DOI
• D.GDOI

What is one of the configuration errors within an AS that can stop a Cisco IOS-XR router from announcing certain prefixes to its EBGP peers?

• A.The inbound BGP route policy only has set actions defined without any pass actions defined
• B.Some prefixes were mistagged with the no-export BGP community
• C.Some prefixes were set with an MED of 0
• D.The outbound BGP route policy only has set actions defined without any pass actions defined