400-007 Free Practice Test

An external edge router provides connectivity from a service provider to an enterprise Which two Internet edge best practices meet compliance regulations'? (Choose two )

1. A. Implement filtenng to control traffic that is sourced from the infrastructure IP space.
2. B. Enable and use only secure protocols.
3. C. Send logs to a centralized logging collection server.
4. D. Implement EBGP to advertise all owned IP blocks.
5. E. Use login banners and interface access lists to restrict administrative access to the system

Correct Answer: BE

Which design benefit of bridge assurance is true?

1. A. It supposes a spanning-tee topology change upon connecting and disconnecting a station on a port
2. B. It prevents switched traffic from traversing suboptimal paths on the network.
3. C. It allows small, unmanaged switches to be plugged into ports of access switches without the risk of switch loops.
4. D. It prevents switch loops caused by unidirectional point-to-point link condition on Rapid PVST + and MST

Correct Answer: D

A BGP route reflector in the network is taking longer than expected to coverage during large network changes. Troubleshooting shows that the router cannot handle all the TCP acknowledgements during route updates. Which action can be performed to tune the device performance?

1. A. Increase the size of the hold queue.
2. B. Increase the size of the large buffers.
3. C. Decrease the size of the small buffers.
4. D. Increase the keepalive timers for each BGP neighbor.

Correct Answer: A

SDN is still maturing Throughout the evolution of SDN which two things will play a key role in enabling a successful deployment and avoiding performance visibility gaps in the infrastructure? (Choose two.)

1. A. rapid on-demand growth
2. B. dynamic real-time change
3. C. falling back to old behaviors
4. D. peer-to-peer controller infrastructure
5. E. integration of device context

Correct Answer: BE

Company XYZ branch offices connect to the headquarter sites using two links, MPLS and Internet. The company wants to design the traffic flow so that voice traffic goes through the MPLS link and all other traffic uses either the MPLS link or the Internet link. Which technique can the company use in their design to ensure that the traffic is not process switched?

1. A. policy-based routing
2. B. virtual links
3. C. visualization
4. D. floating static route

Correct Answer: A