单项选择题

The administrator wants to verify the current state of the OSPF database loading process. Which show command should the administrator use?（）

A. show ip ospf [process - id] interface
B. show ip ospf neighbor
C. show ip ospf [process - id]
D. show ip ospf [process - id area - id] database

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多项选择题

Refer to the exhibit. A network administrator wants to reduce the number of OSPF routes advertised from Area 1 into Area 2. As the router configuration specialist, what two things would you do to accomplish this goal?（）

A. Enter the configuration on router B1.
B. Enter the configuration on router B4.
C. On the same router, enter the Summary - address 10.10.1.0 255.255.255.128 subcommand.
D. On the same router, enter the Area 1 range 10.10.1.0 255.255.255.128 subcommand.
E. On the same ro uter, enter the Area 2 range 10.10.1.0 255.255.255.128 subcommand.

多项选择题

Refer to the exhibit. A company would prefer all Internet - bound OSPF routed traffic to use ISP ABC with ISP DEF as a backup. As the network consultant, what three configuration changes might you make?（）

A. The default -information originate command should be configured on router B1 and B4.
B. The default -information originate command should be configured on router B2 and B3.
C. If the metric value for ISP ABC is set at the default, the I SP DEF metric value should be set to 1.
D. If the metric value for ISP ABC is set at the default, the ISP DEF metric value should be set to 25.
E. The metric type value should be set to type 1.
F. The metric type value should be set to type 2.

单项选择题

Which functionality is required within an IP router that is situated at the boundary of an IPv4 network and an IPv6 network to allow communication between IPv6- only and IPv4 - only nodes?（）

A. Autoconfiguration
B. Automatic 6to4 Tunnel
C. Automatic 6to4 Relay
D. Network Address Translator - Protocol Translator (NAT - PT)
E. Intrasite Automatic T unnel Address Protocol (ISATAP)