计算机存储器中，一个字节由（)位二进制位组成。A．4 B．8 C．16 D．32

A. On the ABR router ospf 10 area 3 stub

B. On all Area 3 routers router ospf 10 area 3 stub

C. On all Area 3 routers router ospf 10 area 3 stub no - summary

D. On the ABR router ospf 10 area 3 nssa

E. On the ABR rou ter ospf 10 area 3 stub no - summary

configuration mode: area 4 stub.Which two things need to be done to finish making area 4 a totally stubby area？（）

A. Apply the area 4 stub command to all routers in the area

B. On the ABR, use the area 4 stub command with the no - summary keyword

C. On the ABR, specify a default cost for the area with the area default - cost command

D. On the ABR, use the default - information originate command to inject a default route into area 4

E. Use the auto - cost command on each router in the area to automatically determine the cost to other OSPF areas

A. area 0 stub o n routers R4 and R5

B. area 5 stub on routers R4 and R5

C. area 5 stub no - summary on routers R4 and R5

D. area 0 stub no - summary on router R4 and area 5 stub no - summary on router R5

E. area 5 stub no - summary on router R4 and area 5 stub on router R5

A. Stub

B. Totally stubby

C. NSSA

D. Totally NSSA

A．stub

B．totally stub

C．nssa

D．area

PF database. Which two options a re valid checks that should be performed first to verify proper OSPF operation？（）

A. Are the ASBRs trying to redistribute the external routes into a totally stubby area？

B. Are the ABRs configured with stubby areas？

C. Is the subnets keyword being used with the redistribution command？

D. Is backbone area (area 0) contiguous？

E. Is the CPU utilization of the routers high？

ee OSPF neighbors, one connected to each of its three physical interfaces. Which statement is correct about router C？（）

A. It is configured and functioning correctly as an OSPF internal router.

B. It is configured and functioning correc tly as an ABR attached to stub area 4.

C. It is configured and functioning correctly as an ASBR attached to external area 4.

D. It is configured and functioning correctly as an ABR attached to totally stubby area 4.

E. It is not configured correctly to function as specified.