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【多项选择题】

R1, an ABR between backbone area 0 and area 1, has intra - area routes in area 0 for 10.1.1.0/24,10.1.2.0/24, and 10.1.3.0/24. These routes have metrics of 21, 22, and 23, respectively. An engineer then adds the area 0 r ange 10.1.0.0 255.255.0.0 command under the OSPF process of R1.<br /> Which of the following is true?（）<p> R1, an ABR between backbone area 0 and area 1, has intra - area routes in area 0 for 10.1.1.0/24,10.1.2.0/24, and 10.1.3.0/24. These routes have metrics of 21, 22, and 23, respectively. An engineer then adds the area 0 r ange 10.1.0.0 255.255.0.0 command under the OSPF process of R1.<br /> Which of the following is true?（）</p>

A、A. R1 loses and then re - establishes neighborships with all neighbors.

B、B. R1 no longer advertises 10.1.1.0/24 to neighbors into area 1.

C、C. R1 advertises a 1 0.1.0.0/16 route into area 1 with a metric of 23 (largest metric).

D、D. R1 advertises a 10.1.0.0/16 route into area 1 with metric of 21 (lowest metric).

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更多“R1, an ABR between backbone area 0 and area 1, has intra - area routes in area 0 for 10.1.1.0/24,10.1.2.0/24, and 10.1.3.0/24. These routes have metrics of 21, 22, and 23, respectively. An engineer then adds the area 0 r ange 10.1.0.0 255.255.0.0 command under the OSPF process of R1.<br /> Which of the following is true?（）<p> R1, an ABR between backbone area 0 and area 1, has intra - area routes in area 0 for 10.1.1.0/24,10.1.2.0/24, and 10.1.3.0/24. These routes have metrics of 21, 22, and 23, respectively. An engineer then adds the area 0 r ange 10.1.0.0 255.255.0.0 command under the OSPF process of R1.<br /> Which of the following is true?（）</p>”相关的问题
第1题
[] The following command output was gathered from Router R1, an ABR between areas 0 (backbone) and area 1. In this internetwork, area 0 contains all the subnets of cla ss A network 10.0.0.0. R1's OSPF process has a distribute - list prefix question in command configured. Assuming the subnets listed in the answers actually exist in area 0. Which of the following occurs on router R1?（） R1#sh ip prefix - list ip prefix - list&nbsp; question: 4 entries seq 5 deny 10.1.2.0/24 ge 25 le 27 seq 15 deny 10.2.0.0/16 ge 30 le 30 seq 20 permit 0.0.0.0/0 le 32 The following command output was gathered from Router R1, an ABR between areas 0 (backbone) and area 1. In this internetwork, area 0 contains all the subnets of cla ss A network 10.0.0.0. R1's OSPF process has a distribute - list prefix question in command configured. Assuming the subnets listed in the answers actually exist in area 0. Which of the following occurs on router R1?（） R1#sh

A、A. R1 will not create/flood a type 3 LSA for subnet 10.1.2.0/26 into area 1&nbsp;&nbsp;B、B. R1 will not create/flood a Type 3 LSA for subnet 1 0.1.2.0/24 into area 1&nbsp;&nbsp;C、C. R1 will not have an OSPF route for subnet 10.1.2.0/26 in its IP routing tablE&nbsp;&nbsp;D、D. R1 will not have an OSPF route for subnet 10.1.2.0/24 in its IP routing tablE&nbsp;&nbsp;

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第2题
[] Router R1 sits at an Enterprise branch office, using the Internet for its only connectivity back to the rest of the EnterprisE. Which of the following is not a ben efit of using an IPsec tunnel for packets sent through the Internet, between R1 and the rest of the Enterprise?（） Router R1 sits at an Enterprise branch office, using the Internet for its only connectivity back to the rest of the EnterprisE. Which of the following is not a ben efit of using an IPsec tunnel for packets sent through the Internet, between R1 and the rest of the Enterprise?（）

A、A. Privacy&nbsp;&nbsp;B、B. Authentication&nbsp;&nbsp;C、C. Allows using an IGP between R1 and the Enterprise&nbsp;&nbsp;D、D. Secure communications&nbsp;&nbsp;

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第3题
[多选题] Which of the following are not true OSPF LSA rules？（）

A、OSPF LSA type 5 triggers an LSA type 7 at an ABR between an NSSA and the backbone area&nbsp;&nbsp;B、OSPF LSA type 1 triggers an LSA type 3 at an ABR.&nbsp;&nbsp;C、OSPF LSA type 7 triggers an LSA type 5 at an ABR between an NSSA and the backbone area&nbsp;&nbsp;D、OSPF LSA type 3 triggers an LSA type 4 at an ABR.&nbsp;&nbsp;E、OSPF LSA type 5 triggers an LSA type 7 at an A5BR but only in N5SAs&nbsp;&nbsp;F、OSFP LSA type 2 triggers an LSA type 3 at an ABR&nbsp;&nbsp;

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第4题
[单选题] You have just completed an OSPF implementation. While executing your verification plan, you determine that R1 is not able to establish full OSPF adjacency with R2. The show ip ospf neighbor comman d output on R1 shows that R2 is stuck in the INIT state. What could be the cause of this problem?（）

A、DR and BDR election errors between R1 and R2.&nbsp;&nbsp;B、The R2 router has not received the OSPF hello packets from the R1 router.&nbsp;&nbsp;C、Mismatched interface ma ximum transmission unit (MTU) configuration between the R1 and R2.&nbsp;&nbsp;D、Mismatched OSPF hello interval configuration between the R1 and R2&nbsp;&nbsp;E、Corrupted LSAs exchanges between the R1 and R2.&nbsp;&nbsp;

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第5题
[单选题] ABR R1 has been configured with an area 1 stub no - summary command. Which stubby area type is area 1?（）

A、Stub&nbsp;&nbsp;B、Totally stubby&nbsp;&nbsp;C、NSSA&nbsp;&nbsp;D、Totally NSSA&nbsp;&nbsp;

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第6题
[单选题] Based on the show ip route isis output on R1, which statement is true? （）

A、The i su 10.1.0.0/23 route is a suppressed route.&nbsp;&nbsp;B、The i su 10.1. 0.0/23 route is a summary route.&nbsp;&nbsp;C、The i su 10.1.0.0/23 route is an IS - IS external route.&nbsp;&nbsp;D、The R1 IS - IS router is an ASBR.&nbsp;&nbsp;E、The R1 IS - IS router is an ABR that belongs to multiple IS - IS areas.&nbsp;&nbsp;F、The R1 IS - IS router is performing route aggregation and is suppressing the more specific 10.1.0.0/23 prefix.&nbsp;&nbsp;

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第7题
[单选题] Which of the following is true about an OSPF area border router (ABR)?（）

A、The ABR must have multiple interfaces connected to the backbone areA&nbsp;&nbsp;B、An ABR is a router with two interfaces, each connected to a different nonbackbone areA&nbsp;&nbsp;C、The only requirement to be considered an ABR is at least one interface connected to the backbone areA&nbsp;&nbsp;D、An ABR must have at least one interface in the backbone area plus at least one other interface in a nonbackbone areA&nbsp;&nbsp;

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第8题
[单选题] The following output exists on Router R1, a router internal to area 1. What can you d etermine as true from the output of the show ip ospf database summary command?（）

A、The LSA was created by an ABR due to an area range command.&nbsp;&nbsp;B、The LSA was created by an ASBR due to a summary - address command.&nbsp;&nbsp;C、If cr eated by an area range command, the best metric for a subordinate subnet on that ABR must have been 11.&nbsp;&nbsp;D、None of the other answers is correct.&nbsp;&nbsp;

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第9题
[单选题] R1 is internal to area 1, and R2 is internal to area 2. Subnet 10.1.1.0/24 exists in area 2 as a connected subnet off R2. ABR ABR1 connects area 1 to backbone area 0, and ABR2 c onnects area 0 to area 2. Which of the following LSAs must R1 use when calculating R1's best route for 10.1.1.0/24?（）

A、R2's Type 1 LSA&nbsp;&nbsp;B、Subnet 10.1.1.0/24's Type 2 LSA&nbsp;&nbsp;C、ABR1's Type 1 LSA in area 0&nbsp;&nbsp;D、Subnet 10.1.1.0/24's Type 3 LSA in Area 0&nbsp;&nbsp;E、 Subnet 10.1.1.0/24's Type 3 LSA in Area 1&nbsp;&nbsp;

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