400-007 Free Practice Test

Company XYZ has implemented policy-based routing in their network. Which potential problem must be kept in mind about network reconvergence and PBR?

1. A. It can limit network scalability
2. B. It can create microloops during reconvergence
3. C. It increases convergence time.
4. D. It reduces convergence time.

Correct Answer: B

Refer to the exhibit.

Which impact of using three or more ABRs between the backbone area and area 1 is true?

1. A. In a large-scale network LSA replication by all ABRs can cause serious scalability issues
2. B. Multiple ABRs reduce the CPU processing on each A6R due to splitting prefix advertisement
3. C. In a large-scale network multiple ABRs can create microloops.
4. D. Prefixes from the non-backbone area are advertised by one ABR to the backbone

Correct Answer: A

Refer to the exhibit.

An engineer is designing the network for a multihomed customer running in AS 111 does not have any other Ass connected to it. Which technology is more comprehensive to use in the design to make sure that the AS is not being used as a transit AS?

1. A. Configure the AS-set attribute to allow only routes from AS 111 to be propagated to the neighbor ASs.
2. B. Use the local preference attribute to configure your AS as a non-transit'' AS.
3. C. include an AS path access list to send routes to the neighboring ASs that only have AS 111 in the AS path field.
4. D. Include a prefix list to only receive routes from neighboring ASs.

Correct Answer: C

A green data center is being deployed and a design requirement is to be able to readily scale server virtualization Which IETF standard technology can provide this requirement?

1. A. data center bridging
2. B. unified fabric
3. C. Transparent Interconnection of Lots of Links
4. D. fabric path

Correct Answer: C

Two routers R1 and R2 are directly connected through an Ethernet link. Both routers are running OSPF over the Ethernet link and OSPF has been registered with BFD. R1 has been set up to transmit BFD at a 50 ms interval, but R2 can receive only at a 100 ms rate due to platform limitations. What does this mean?

1. A. After the initial timer exchang
2. B. R2 sets its transmission rate to the R1 Desired Min TX interval
3. C. After the initial timer exchang
4. D. R1 sets its transmission rate to the R2 Required Min RX interval
5. E. Timers renegotiate indefinitely, so the timer exchange phase never converges
6. F. R2 sets the P-bit on all BFD control packets until R2 sends a packet with the F-bit set

Correct Answer: B