某工商局在办理完毕某企业变更法定代表人登记1年之后，发现办理登记的工作人员由于汇作疏忽未认真

A. Each OSPF area requires a loopback interface to be configured.

B. Areas may be assigned any number from 0 to 65535.

C. Area 0 is called the backbone area.

D. Hierarchical OSPF networks do not require multiple areas.

E. Multiple OSPF areas must connect to area 0.

F. Single area OSPF networks must be configured in area 1.

A．OSPF

B．EIGRP

C．IS-IS

D．BGP

A. Hierarchical OSPF networks need to be in one area

B. Multiple OSPF areas must connect to area 0

C. Single area OSPF networks must be configured in area 1

D. Areas can be assigned any number from 0 to 63535

E. Area 0 is called the backbone area

F. Each OSPF area need to be configured with a loopback interface

A.It allows switches to read frame tags.

B.It allows ports to be assigned to VLANs automatically.

C.It maintains VLAN consistency across a switched network.

D.It allows frames from multiple VLANs to use a single interface.

E.It allows VLAN information to be automatically propagated throughout the switching environment.

A. It confines network instability to a single area of network.

B. It increases the routing overhead of the network

C. It supports VLSM

D. It routes between Autonomous Systems.

E. It allows extensive control of routing updates

A. All OSPF networks require the use of multiple areas

B. Multiple OSPF areas must connect to area 0

C. Single area OSPF networks must be configured in area 1

D. Areas can be assigned any number from 0 to 63535

E. Area 0 is called the backbone area

F. Each OSPF area need to be configured with a loopback interface

A. It is needed to identify a unique instance of an OSPF database.

B. It is an optional parameter only necessary if multiple OSPF processes are used.

C. It is locally significant.

D. It is globally insignificant

E. All routers in the same OSPF area must have the same process ID to exchange routing information.

outing domains, with two routers redistributing between the two domains.The co- worker asks your help in choosing how to prevent domain loops by setting administrative distance.Assuming all other related settings use defaults, which of the following would solve the domain loop problem？（）

A. The distance ospf intra - area 80 inter - area 80 OSPF subcommand

B. T he distance ospf external 80 OSPF subcommand

C. The distance ospf intra - area 180 inter - area 180 OSPF subcommand

D. The distance ospf external 180 OSPF subcommand

A.Each OSPF area requires a loopback interface to be configured.

B.Areas may be assigned any number from 0 to 65535.

C.Area 0 is called the backbone area.

D.Hierarchical OSPF networks do not require multiple areas.

E.Multiple OSPF areas must connect to area 0.

F.Single area OSPF networks must be configured in area 1.