OSPF routing uses the concept of areas. What are the characteristics of OSPF areas? (Choose Three.)
正解:B,C,E
Explanation/Reference: Explanation: Definition of OSPF areas: An OSPF network may be structured, or subdivided, into routing areas to simplify administration and optimize traffic and resource utilization. Areas are identified by 32- bit numbers, expressed either simply in decimal, or often in octet-based dot-decimal notation, familiar from IPv4 address notation. See discussion following Cisco Learning discussion. https://learningnetwork.cisco.com/message/90832