A data center provider has designed a network using these requirements:
* Two data center sites are connected to the public Internet.
* Both data centers are connected to different Internet providers.
* Both data centers are also directly connected with a private connection for the internal traffic, and public Internet traffic can also be routed at this direct connection.
* The data center provider has only one /19 public IP address block.
Under normal conditions, Internet traffic should be routed directly to the data center where the services are located. When one Internet connection fails, the complete traffic for both data centers should be routed by using the remaining Internet connection. In which two ways can this routing be achieved? (Choose two.)

Refer to the exhibit.

If IEEE 802.1w is in use for this network design, what are two locations where spanning-tree root can be placed to ensure the least-disruptive Layer 2 failover for clients within VLANs 3 and 4? (Choose two.)

Which two practices need to be implemented to increase SNMPv1 security? (Choose two.)

Which tunneling mechanism provides confidentiality as well as tunneling capabilities?

Which description is correct about SNMPv3?