Which statements describe OSPF? (Choose three.)

OSPF (Open Shortest Path First) is a link-state routing protocol that supports VLSM (Variable Length Subnet Masking), allowing for efficient use of IP address space. A key benefit of OSPF is its hierarchical design, which uses areas to confine network instability. If a link within an area goes down, the routing updates are primarily contained within that area, preventing a flood of updates across the entire autonomous system. OSPF also offers extensive control over routing updates through features like area types (e.g., stub, totally stubby, NSSA) and route summarization, which can reduce the size of routing tables and the frequency of updates. "It is used to route between autonomous systems" is incorrect; OSPF is an interior gateway protocol (IGP) used within an autonomous system. BGP (Border Gateway Protocol) is used between autonomous systems. "It increases routing overhead on the network" is incorrect; while link-state protocols can have higher initial overhead due to flooding LSAs, their efficient update mechanisms generally lead to less overhead than distance-vector protocols in stable networks. "It is simpler to configure than RIP v2" is incorrect; OSPF is significantly more complex to configure than RIP v2 due to its area concept and various LSA types.