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单选题Routers A and B have an OC12c and a GE link between them and are running OSPF over both ofthese links. Which statement is correct, assuming the default JUNOS software OSPF metric calculation?（）A There are two equal cost paths betweena and b.B Thege lin

题目
单选题
Routers A and B have an OC12c and a GE link between them and are running OSPF over both ofthese links. Which statement 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

参考答案和解析
正确答案： B
解析： 暂无解析
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相似问题和答案

第1题：

Refer to the exhibit. Router B and router C are performing mutual redistribution between OSPF and EIGRP, and their default metrics are configured the same. Router D has equal cost paths to networks where both paths are not r eally equal cost. For example, network 172.16.54.0 shows equal cost through both router B and router C, though in reality the cost is greater using router C. Other routers, though not shown, are connected to the 172.16.54.0 and 172.16.55.0 networks, and the same issues exist to those routers and the networks connected to them. What can be done so that data will be routed along the most optimal path in the network? （）

A. Redistribute connected interfaces on router B and router C

B. Set the maximum nu mber of equal cost paths to1 in all routers

C. When redistributing EIGRP into OSPF, set the external metric type to type E1

D. Adjust the default metrics in router B and router C so that the values are different in each router

E. None of these solut ions will fix the problem. Migrate to a single dynamic routing protocol


参考答案：E

第2题：

If the OSPF protocol is used to connect customer edge （CE） routers to service provider edge（PE） routers in the VPN backbone， which two options best describe the use of SHAM links？（）

  • A、A sham-link is created between any twoo VPN sites that belong to the same OSPF area and share an OSPF backdoor link
  • B、A sham-link is seen as an intra-area link between PE routers，an OSPF adjacency is created and data base is exchanged
  • C、A SHAM link is created between two directly connected PE routers so that it is preferred over the low speed backdoor door
  • D、A SHAM link is part of OSPF network of MPLS-VPN provider

正确答案:A,B

第3题：

You are running OSPF between two ERX Edge Routers across an OC－12c link with HDLC encapsulation.How many designated routers are present for this link?()

A.0

B.1

C.2

D.3


参考答案：A

第4题：

Which two commands would change the default OSPF metric calculation for interface ge-0/3/0 in JUNOS software？（）

  • A、set interfaces ge-0/3/0 unit 0 metric 10
  • B、set protocols ospf reference-bandwidth 10g
  • C、set interfaces ge-0/3/0 unit bandwidth 10g
  • D、set protocols ospf area 0 interface ge-0/3/0 metric 10
  • E、set protocols ospf area 0 interface ge-0/3/0 bandwidth 10g

正确答案:B,D

第5题：

You have two EBGP peers connected via two parallel serial lines. What should you do to be able to load-balance between two EBGP speakers over the parallel serial lines in both directions？ （）

  • A、nothing，BGP automatically load-balances the traffic between different autonomous systems on all available links
  • B、peer between the eBGP speaker’s loopbacks， configuring eBGP multihop as required， and use an IGP to load-share between the two equal-cost paths between the loopback addresses
  • C、configure a loopback as update source for both EBGP peers and have on each AS an IGP to introduce two equal-cost paths to reach the EBGP peer loopback address；it is also necessary to use the next-hop-self command
  • D、use the ebgp-load-balance command on the neighbor statement on both sides
  • E、configure a loopback as update source for both EBGP peers and have on each AS an IGP to introduce two equal-cost paths to reach the peer loopback address；it is also necessary to use the ebgp-multihop and next-hop-self commands

正确答案:B

第6题：

How will router A choose a path to the 10.1.2.0／24 network when different routing protocols are configured (Choose three.)()。

A.If RIPv2 is the routing protocol, only the path AD will be installed in the routing table by default.

B.If RIPv2 is the routing protocol, the equal cost paths ABD and ACD will be installed in the routing table by default.

C.If EIGRP is the routing protocol, only the path AD will be installed in the routing table by default.

D.If EIGRP is the routing protocol, the equal cost paths ABD and ACD will be installed in the routing table by default.

E.If EIGRP and OSPF are both running on the network, the EIGRP paths will be installed in the routing table.

F.If EIGRP and OSPF are both running on the network, the OSPF paths will be installed in the routing table.


参考答案：A, D, E

第7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8题：

Process OSPF 1 is redistributing routes from process OSPF 2. Which of the following methods may be used to set the metrics of the redistributed routes?()

A. Let the metrics default.

B. Use each redistributed route‘s OSPF metric using the redistribute command‘s metric transparent keywords.

C. Set the metric using the default - metric router subcommand.

D. Redistribution is not allowed between two OSPF p rocesses.


参考答案：A, C

第9题：

Which two statements are correct regarding default protocol preference values?（）

  • A、RIP is preferred over OSPF external routes.
  • B、Direct, local, and static routes have the same preference value.
  • C、OSPF's preference value is lower than BGP.
  • D、OSPF has a single preference value for both internal and external routes.

正确答案:A,C

第10题：

You are running OSPF between two ERX Edge Routers across an OC-12c link with HDLC encapsulation. How many designated routers are present for this link?（）

  • A、0
  • B、1
  • C、2
  • D、3

正确答案:A

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