Routers A and B have an OC12c and a GE link between them and are running OSPF over both of these links.Which item is correct， assuming the default JUNOS software OSPF metric calculation？（）A、There are two equal cost paths between A and BB、The GE link is th

题目

Routers A and B have an OC12c and a GE link between them and are running OSPF over both of these links.Which item is correct， assuming the default JUNOS software OSPF metric calculation？（）

A、There are two equal cost paths between A and B
B、The GE link is the preferred path between A and B
C、The OC12c link is the preferred path between A and B
D、Manual metric assignment must be configured to determine the outcome.

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第1题：

Which routers must be configured with the same authentication string when configuring OSPFauthentication?()

A. all routers on a link

B. all routers in an area

C. all external OSPF peers

D. all routers in an OSPF domain

参考答案：A

第2题：

When multiple routers are used in interconnected networks,the routers exchange information about（）using a dynamic routing protocol

A.destination addresses

B.IP addresses

C.work addresses

D.router addresses

正确答案：A
解析：当接入网络存在多个路由器时，路由器利用动态路由协议交换（）信息A、目的地址B、IP地址C、工作地址D、路由地址

第3题：

Routers A and B are connected with a point-to-point OC-3 interface. Each router‘s OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in the same area.How many IS-IS adjacencies exist between the two routers?（）

A.0

B.1

C.2

D.3

参考答案：C

第4题：

When verifying the OSPF link state database, which type of LSAs should you expect to see within the different OS PF area types?（）

A、All OSPF routers in stubby areas can have type 3 LSAs in their database.
B、All OSPF routers in stubby areas can have type 7 LSAs in their database.
C、All OSPF routers in totally stubby areas can have type 3 LSAs in their database.
D、All OSPF routers in totally stubby areas can have type 7 LSAs in their database.
E、All OSPF routers in NSSA areas can have type 3 LSAs in their database.
F、All OSPF routers in NSSA areas can have type 7 LSAs in their database.

正确答案:A,E,F

第5题：

Refer to the exhibit. In a redundant hub - and - spoke deployment using EIGRP, what feature can be used to ensure that routers C through F are not used as transit routers for data traveling from router B to network 10.1.1.0? Select the best response.（）

A. Use address summarization at routers C, D, E, and F

B. Use the EIGRP Stub featu re on routers C, D, E, and F

C. Use passive - interface on the spoke links in routers A and B

D. Change the administrative distance in routers A and B for routes learned from routers C, D, E,and F

参考答案：B

第6题：

Routers A and B are connected with a point-to-point OC-3 interface. Each routers OC-3 interface is configured for both Level 1 and Level 2. The routers are configured in different areas. How many IS-IS adjacencies exist between the two routers?（）

A.0

B.1

C.2

D.3

参考答案：B

第7题：

Which of the following is true about routers internal to a totally NSSA area?()

A. Routers cannot redistribute external routes into the area.

B. Routers should have zero Type 3 LSAs in their LSDBs.

C. Routers should have zero Type 5 LSAs in their LSDBs.

D. Routers should learn default routes from the ABRs attached to the area.

参考答案：C, D

第8题：

Which two statements are true by default of a multilevel IS－IS network?()

A. Level 1 only routers see routes contained in their area.

B. Level 1 routers route towards Level 2 routers due to the attached bit.

C. Level 2 routers route towards Level 1 routers due to the attached bit.

D. Level 2 routers can see routes in other Level 2 areas and routes originated in Level 1 areas.

参考答案：A, D

第9题：

Which statement is correct about an OSPF sham-link？（）

A、A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.
B、A sham-link is a logical link between PE routers that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
C、A sham-link is a logical link between PE routers that carries OSPF LSAs and forwards customer traffic across it.
D、A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and carries OSPF LSAs.
E、A sham-link is a point-to-multipoint link that provides an OSPF adjacency between the PE routers and forwards customer traffic across it.

正确答案:B

第10题：

Routers R1 and R2 use HSRP so that one router will back up the other should there be a failure. Which two statements are true about the Hot Standby Router Protocol （HSRP）？（）

A、 Load sharing with HSRP is achieved by creating multiple subinterfaces on the HSRP routers.
B、 Routers configured for HSRP can belong to multiple groups and multiple VLANs.
C、 Load sharing with HSRP is achieved by creating HSRP groups on the HSRP routers.
D、 All routers configured for HSRP load balancing must be configured with the same priority.
E、 Routers configured for HSRP must belong to only one group per HSRP interface.

正确答案:B,C

Routers A and

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