Which two LSA types will always have a network mask field of 0.0.0.0? (Choose two.)

Which OSPF LSA type is used by a DR in area 0 to distribute external routes to another area?

Which two statements are true about creating OSPF areas? (Choose two.)

You have an OSPF area with a single link to the backbone area and you do not want it to accept
routes from another autonomous system. The only route that would be advertised would be a
default gateway to area 0.
Which type of area should be configured for this?

Which router sends network LSAs?

Which LSA is generated when an area only requires a gateway to routes outside the autonomous
system?

You want to summarize the 1.4.1.0/29 routes with the command area 2 range 1.4.0.0/29.
To which router will the command be applied?

Which type of router is responsible for performing route redistribution between OSPF and a
separate system running another routing protocol?

Which type of OSPF router advertises external routes?

What is the purpose of a virtual link within OSPF?