What is a reason to implement IPv4 private addressing?

An organization secures its network with multi-factor authentication using an authenticator app on employee smartphone. How is the application secured in the case of a user's smartphone being lost or stolen?

Refer to the exhibit.

The link between PC1 and the switch is up. but it is performing poorly. Which interface condition is causing the performance problem?

Refer to the exhibit. Drag and drop the subnet masks from the left onto the corresponding subnets on the right.
Not all subnet masks used.

The clients and OHCP server reside on different subnets. Which command must be used to forward requests and replies between clients on the 10.10.0.1/24 subnet and the DHCP server at 192.168.10.1?