Free 400-007 Exam Braindumps

Which undesired effect of increasing the jitter compensation buffer is true?

1. A. The overall transport jitter decreases and quality improves.
2. B. The overall transport jitter increases and quality issues can occur.
3. C. The overall transport delay increases and quality issues can occur.
4. D. The overall transport delay decreases and quality improves.

Correct Answer: C

You want to mitigate failures that are caused by STP loops that occur before UDLD detects the failure or that are caused by a device that is no longer sending BPDUs. Which mechanism do you use along with UDLD?

1. A. Root guard
2. B. BPDU guard
3. C. Loop guard
4. D. BPDU filtering

Correct Answer: C

SD-WAN can be used to provide secure connectivity to remote offices, branch offices, campus networks, data centers, and the cloud over any type of IP-based underlay transport network. Which two statements describe SD WAN solutions? (Choose two.)

1. A. SD-WAN networks are inherently protected against slow performance.
2. B. Control and data forwarding planes are kept separate.
3. C. Improved operational efficiencies result In cost savings.
4. D. Solutions include centralized orchestration, control, and zero-touch provisioning.
5. E. Solutions allow for variations of commodity and specialized switching hardware.

Correct Answer: BD

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

A business invests in SDN and develops its own SDN controller that, due to budget constraints, runs on a single controller. The controller actively places an exclusive lock on the configuration of the devices to ensure it is the only source of changes to the environment. What is the result if the controller fails?

1. A. All device configurations are in read-only mode until the controller is restored.
2. B. The control plane is unavailable until the controller is restored.
3. C. If a device fails, the configuration backup is unavailable
4. D. Manual changes are only possible until the controller is restored

Correct Answer: B