In an OSPF Hello packet, which of the following fields must match for all neighbor...

Comprehensive and Detailed Explanation From Exact Extract:

From Nokia 7750 SR OS Routing Protocols Guide (OSPF Hello Protocol Rules):

“OSPF requires the following parameters to match for neighbor establishment: Area ID, Hello interval, Dead interval, and options (including Stub flag).”

A (Correct): Area ID must match.

B (Correct): Hello and Dead intervals must match.

C (Correct): Stub flag is part of the OSPF Options field and must match.

D: Checksum applies to LSA packets, not Hello packets.