- (Topic 1)
Refer to the exhibit.

R5 is the current DR on the network, and R4 is the BDR. Their interfaces are flapping, so a network engineer wants the OSPF network to elect a different DR and BDR. Which set of configurations must the engineer implement?
A)

B)

C)

D)

1. A. Option
2. B. Option
3. C. Option
4. D. Option

Correct Answer: D

- (Topic 4)
Refer the exhibit.

What is the cause of poor performance on router R19?

1. A. excessive collisions
2. B. speed and duplex mismatch
3. C. port oversubscription
4. D. excessive CRC errors

Correct Answer: A

- (Topic 4)
What are two functions of DHCP servers? (Choose two.)

1. A. prevent users from assigning their own IP addresses to hosts
2. B. assign dynamic IP configurations to hosts in a network
3. C. support centralized IP management
4. D. issue DHCPDISCOVER messages when added to the network
5. E. respond to client DHCPOFFER requests by issuing an IP address

Correct Answer: BC

- (Topic 1)
Which technology is appropriate for communication between an SDN controller and applications running over the network?

1. A. OpenFlow
2. B. REST API
3. C. NETCONF
4. D. Southbound API

Correct Answer: B

- (Topic 1)
What are two benefits of controller-based networking compared to traditional networking?

1. A. controller-based increases network bandwidth usage, while traditional lightens the load on the network.
2. B. controller-based inflates software costs, while traditional decreases individual licensing costs
3. C. Controller-based reduces network configuration complexity, while traditional increases the potential for errors
4. D. Controller-based provides centralization of key IT function
5. E. While traditional requires distributes management function
6. F. controller-based allows for fewer network failure, while traditional increases failure rates.

Correct Answer: CD
Cisco DNA Center Device Management
* 3. Monitor the cloud for software update
* 5. Uses CLI templates to apply a consistent configuration to multiple devices at an individual location
* 6. Uses NetFlow to analyse potential security threats throughout the network and take appropriate action on that traffic
Traditional device management
* 2. Manages device configuration on a per-device basis
* 4. Security is managed near the perimeter of the network with firewalls, VPNs, and IPS
✑ Implements changes via an SSH terminal