400-201 무료 덤프문제 온라인 액세스

In a Service provider network , a NOC engineer identifies and interface that flaps continuously. This interface connects to an EBGP peer. Which feature can reduce this instability on the service provider network?

• A.BGP PIC
• B.IGP Prefix Prioritization
• C.IP event Dampening
• D.Non-stop Forwarding

Refer to the exhibit the 2.6.6.6/32 prefix is flapping when PE1 is flapping. Which action can fox this issue?

• A.configure a sham link between PE2 and PE3
• B.On PE2 and PE3 reconfigure redistribute BGP into IS-IS using the metric-type external parameter
• C.On PE2, allow only redistribution from BGP into IS-IS on PE3, allow only redistribution from IS-IS into BGP
• D.configure all IS-IS instances as level-1-only

DRAG DROP
Drag and drop the Timing Protocol characteristics on the left onto the correct Timing over Packet Solution on the right

정답:

Explanation: Network Time Protocol : The most recent version introduced accuracy to the terms of microseconds and includes an extensibility mechanism Precision Time Protocol : It defined a protocol for precise, real-time, network-wide synchronizaton accuracy in the sub millisecond range Synchronous Ethernet : It provides accurate frequency synchronization, but does not provide time/phase synchronization Time over IP connection and transfer of clock BOF: It was written to provide a roubust IP/MPLS-based time and frequency distribution architecture

Which statement about IPv6 security is true?

• A.Reconnaissance attacks are easier to do in IPv6 compared to IPv4.
• B.IPv6 amplification attacks can happen using IPv6 broadcast address.
• C.ICMP policies on firewalls do not need to be changed for IPv6 because ICMP is Layer 3 agnostic.
• D.RA-guard feature is used to block rogue RAs.

A VPLS network consists of provider edge routers that have fully meshed pseudowires, the network runs unicast and multicast traffic, the network recently experienced bandwidth and CPU-related performance issue While monitoring the VPLS and interface statistics an operations engineer notice that the network is experiencing an unusual amount of broadcast and undesired multicast traffic. Which two technique can address these issue?(choose two)

• A.Implement IGMP snooping in the VPLS network
• B.Implement MAC withdrawal on each EFP in the VPLS bridge domain
• C.Change the network to run VPWS to mange the broadcast traffic efficiently
• D.Set a limit on MAC learning in the pseudowire in the VPLS network
• E.Implement Storm Control in the VPLS bridge domain