DR (Designated Router) is for environments where many routers on the same network such as Ethernet. In the following presented network, all routers are reloaded simultaneously, and DR is selected as expected. What is the RTC status?（）<br /> <img src="https://nimg.ppkao.com/2018-07/yiyu/2018073011380774673.jpg?sign=43b6821478420fbe6f13decd67900fde&t=62d0d787" />

A、2WAY/DR

B、FULL/DR

C、FULL/DROTHER

D、FULL/BDR

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更多“ DR (Designated Router) is for environments where many routers on the same network such as Ethernet. In the following presented network, all routers are reloaded simultaneously, and DR is selected as expected. What is the RTC status?（）<br /> <img src="https://nimg.ppkao.com/2018-07/yiyu/2018073011380774673.jpg?sign=43b6821478420fbe6f13decd67900fde&t=62d0d787" />”相关的问题

第1题

[多选题] Rout er R1 directly connects to subnet 10.1.1.0/24 with its Fa0/0 interface. R1 can ping four other working OSPF routers in that subnet. R1 is neither the designated router (DR) nor backup DR (BDR). OSPF is working correctly on all five routers. Which of the following is true on R1?（）

A、The show ip ospf neighbors command lists two neighbors off Fa0/0. B、The show ip ospf neighbors command lists four neighbors off Fa0/0. C、The show ip ospf neighbors command lists two neighbors off Fa0/0 in the FULL state. D、The show ip ospf neighbors command lists two neighbors off Fa0/0 in the DISCO state.

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第2题

[] Refer to the exhibit.Why are two OSPF designated routers designated routers identified on Core-Router？（） Refer to the exhibit.Why are two OSPF designated routers designated routers identified on Core-Router？（）

A、A.Core-Router is connected more than one multi-access network B、B.The router at 208.149.23.130 is a secondary DR in case the primary fails. C、C.Two router IDs have the same OSPF priority and are therefore tied for DR election D、D.The DR ecection is still underway and there are two contenders for the role

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第3题

[单选题] Which one of the following privileged EXEC mode IOS show commands will display the state of the OSPF DR/BDR (designated router / backup designated router) election process?（）

A、TK1# show ip ospf interface B、TK1# show ip ospf priority C、TK1# show ospf neighbor detail D、TK1# show ospf processes E、TK1# show ospf neighbor state

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第4题

[单选题] DR （Designated Router） is for environments where many routers on the same network such asEthernet. In the following presented network， all routers are reloaded simultaneously， and DR isselected as expected. What is the CK-RTC status？（）

A、2WAY/BDR B、FULL/BDR C、2WAY/DROTHER D、2WAY/DR E、FULL/DROTHER F、FULL/DR H、None of the other alternatives apply

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第5题

[多选题] 关于DR，下面描述正确的是（）

A、在网段DR选举中，DR优先级相同时，IP地址大的当选 B、源DR负责向RP用多播发送Register报文 C、接收端DR负责向组播源或RP发送join报文 D、共享网段上Assert Winner可以不是网段DR

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第6题

[单选题] 在某一网络中，DR（RouterA，其优先级为20）、BDR（RouterB，其优先级为10）已经存在。此时，再接入一台RouterC（其优先级为50），然后将DR断电，最后再将DR上电启动，下列说法正确的是（）。

A、RouterB成为DR，RouterC成为BDR B、RouterC成为DR，RouterB成为BDR C、RouterA仍然是DR，RouterB仍然是BDR D、RouterB成为DR，RouterA成为BDR

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第7题

[] 从端口上收到一个更优的配置BPDU之后，重新计算根交换机、根端口和根路径开销的过程将被启动。对此计算过程描述正确的是：（）

A、A.比较所有的端口上Designated Root，Designated Cost和端口Cost之和，Designated Bridge和Designated Port的值，从中选出最优参数的端口，并且此端口上记录的Designated Root要比交换机自身的Bridge Identifier更优先，此端口即为根端口 B、B.选择出根端口之后，更新交换机全局参数Designated Root为根端口记录的Designated Root；更新交换机全局参数Root Path Cost为根端口记录的Designated Cost与根端口的Port Cost之和 C、C.如果任何端口记录的Designated Root参数都不比交换机自身的Bridge Identifier更优先，则交换机全局参数Designated Root设置为交换机自身的Bridge Identifier；交换机全局参数Root Path Cost设置为0 D、D.根交换机，根端口，根路径开销计算完成并更新了交换机全局参数之后，开始启动指定端口选择过程 E、E.以上说法都不正确