An enterprise network has two core routers that connect to 200 distribution routers and uses full-mesh iBGP peering between these routers as its routing method. The distribution routers are experiencing high CPU utilization due to the BGP process. Which design solution is the most cost effective?
Answer(s): E
Route reflectors are a way to reduce the number of BGP sessions that need to be established between routers. This can help to reduce the CPU utilization on the distribution routers.The other options are not as cost-effective. Option A, increasing the memory on the core routers, is not a cost-effective solution because it would require the purchase of new memory modules. Option B, increasing bandwidth between the core routers, is not a cost-effective solution because it would require the purchase of new routers or switches. Option C, implementing eBGP between the core and distribution routers, is not a cost-effective solution because it would require the configuration of all of the routers in the network. Option D, increasing the memory on the distribution routers, is not a cost-effective solution because it would require the purchase of new memory modules for all of the distribution routers.Therefore, the most cost-effective design solution is to implement route reflectors on the two core routers.Here are some additional reasons why the other options are not as cost-effective:-Increasing the memory on the core routers would require the purchase of new memory modules.-Increasing bandwidth between the core routers would require the purchase of new routers or switches.-Implementing eBGP between the core and distribution routers would require the configuration of all of the routers in the network.-Increasing the memory on the distribution routers would require the purchase of new memory modules for all of the distribution routers.-
Which purpose of a dynamically created tunnel interface on the design of IPv6 multicast services is true?
Answer(s): D
A dynamically created tunnel interface is a virtual interface that is created on a router when it needs to forward multicast traffic to a remote network. The tunnel interface is created dynamically because the router does not know the destination of the multicast traffic until it receives it.The other options are not true. Option A, first-hop router registration to the RP, is not the purpose of a dynamically created tunnel interface. The first-hop router registers with the RP using unicast traffic. Option B, multicast source registration to the RP, is not the purpose of a dynamically created tunnel interface. The multicast source registers with the RP using unicast traffic. Option C, multicast client registration to the RP, is not the purpose of a dynamically created tunnel interface. The multicast client registers with the RP using unicast traffic.
Company XYZ network runs IPv4 and IPv6 and they want to introduce a multidomain, multicast-based network. The new design should use a flavor of PIM that forwards traffic using SPT. Which technology meets this requirement?
Answer(s): A
PIM source-specific multicast (SSM) uses a subset of PIM sparse mode and IGMP version 3 (IGMPv3) to allow a client to receive multicast traffic directly from the source. PIM SSM uses the PIM sparse-mode functionality to create an SPT between the receiver and the source, but builds the SPT without the help of an RP.IPv6 multicast provides support for intradomain (not interdomain) multicast routing using PIM sparse mode (PIM-SM). PIM-SM uses unicast routing to provide reverse-path information for multicast tree building, but it is not dependent on any particular unicast routing protocol.
Company XYZ has 30 sites running a legacy private WAN architecture that connects to the Internet via multiple high-speed connections. The company is now redesigning their network and must comply with these design requirements: •Use a private WAN strategy that allows the sites to connect to each other directly and caters for future expansion •Use the Internet as the underlay for the private WAN•Securely transfer the corporate data over the private WAN Which two technologies should be incorporated into the design of this network? (Choose two.)
Answer(s): B,C
Internet as underlay, GETVPN is not an option due to IP header preservation.
GETVPN does not support internet overlay due to IP header preservationhttps://ipwithease.com/getvpn-vs-dmvpn/
Refer to the exhibit. An engineer is designing the traffic flow for AS 111. Traffic from AS 111 should be preferred via AS 100 for all external routes. A method must be used that only affects AS 111. Which BGP attributes are best suited to control outbound traffic?
Answer(s): C
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