The boss of the P4S company plans to dual-home two service providers for Internet connectivity. The full Internet routing table will be accepted from each provider to provide optimal outbound routing. P4S has obtained address space and an AS to use in connecting
to the Internet.
Which mechanism is the simplest one that P4S can use to prevent it from becoming a transit between the two service providers?
A. Build a route filter that only allows networks which are tagged with the LOCAL community to be advertised to each of the
B. Build a route filter that only allows the specific networks the enterprise owns to be advertised to each of the service
C. Build a route filter that only allows networks with an empty AS path to be advertised to each of the service providers.
D. Build a traffic filter that only allows traffic originating from the specific networks the enterprise owns to be forwarded
towards the service providers.
Correct Answer: C
Which description is correct about how MTU mismatches are addressed in the IS-IS neighbor-formation process?
A. IS-IS does not check for MTU mismatches when forming a neighbor relationship.
B. IS-IS checks the locally configured MTU against the MTU advertised in neighbor hello packets. C. IS-IS checks the locally configured MTU against the MTU advertised in neighbor LSPs.
D. IS-IS pads hellos, so neighbor relationships will not be formed on links with mismatched MTUs.
Correct Answer: D
Which three reasons are to summarize link state topology information? (Choose three.)
A. to create boundaries for containing potential network changes and instabilities
B. to permit traffic engineering between areas
C. to reduce the amount of routing information being advertised
D. to hide detailed topology information
Correct Answer: ACD
With a multicast design, applications can send one copy of each packet and address it to the group of computers that want to receive it. This technique addresses packets to a group of receivers rather than to a single receiver, and it depends on the network to
forward the packets to only the networks that need to receive them. Which two of these are characteristics of multicast routing?
A. multicast routing uses OSPF. B. multicast routing uses RPF.
C. In multicast routing, the source of a packet is known.
D. When network topologies change, multicast distribution trees are not rebuilt, but use the original path
Correct Answer: BC
Observe the network presented in the following exhibit. Which routes will be installed in the routing table at router P4S-RE?
A. neither the OSPF nor the EIGRP route
B. the OSPF route
C. the OSPF and EIGRP routes
D. the EIGRP route
Correct Answer: C
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