Which parameter or parameters are used to calculate OSPF cost in Cisco routers?

Which statement is true, as relates to classful or classless routing?

What are three characteristics of the OSPF routing protocol? (Choose three.)

Refer to Exhibit:

The internetwork infrastructure of company XYZ consists of a single OSPF area as shown in the graphic. There is concern that a lack of router resources is
impeding internetwork performance. As part of examining the router resources, the OSPF DRs need to be known. All the router OSPF priorities are at the default
and the router IDs are shown with each router. Which routers are likely to have been elected as DR? (Choose two.)

Refer to the exhibit.

Assume that all of the router interfaces are operational and configured correctly. How will router R2 be affected by the configuration of R1 that is shown in the
exhibit?

Refer to the exhibit.

Assume that all router interfaces are operational and correctly configured. In addition, assume that OSPF has been correctly configured on router R2. How will the
default route configured on R1 affect the operation of R2?

Refer to the exhibit.

C-router is to be used as a “router-on-a-stick” to route between the VLANs. All the interfaces have been properly configured and IP routing is operational. The hosts
in the VLANs have been configured with the appropriate default gateway. What is true about this configuration?

Refer to the exhibit.

What information about the interfaces on the Main_Campus router is true?

Refer to the exhibit.

Based on the exhibited routing table, how will packets from a host within the 192.168.10.192/26 LAN be forwarded to 192.168.10.1?

What can be done to secure the virtual terminal interfaces on a router? (Choose two.)