Refer to the exhibit.

Router 4, which is an HP Comware router, redistributes Routing Information Protocol (RIP) routes into Open Shortest Path First (OSPF) process 1. Router 4 has several dozen IP routes, and the network administrator wants to minimize the number of external routes throughout the entire OSPF AS. How can the administrator meet this requirement?
Correct Answer: D
Explanation/Reference:
Explanation:
Use the asbr-summary command to configure a summary route.
Use the undo asbr-summary command to remove a summary route.
No ASBR route summarization is configured by default.
With the asbr-summary command configured, an ASBR summarizes redistributed routes that fall into the specified address range into a single route. If the ASBR resides in an NSSA area, it advertises the summary route in a Type-7 LSA into the area.
Reference: 04-OSPF Commands
http://www.h3c.com/portal/Technical_Support___Documents/Technical_Documents/Security_Products/ H3C_SecPath_F1000-E/Command/Command/H3C_SecPath_High-End_CM(F3169_F3207)-
5PW106/04/201109/725613_1285_0.htm