单选题There are three routers on a Gigabit Ethernet LAN: Router A, Router B, and Router C. Router A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router A's DIS priority is 64. The LAN is a Level 1-only link. Router D has just been pow
题目
Router A remains the DIS and generates a new pseudonode LSP for that LAN
Router A remains the DIS and NO new pseudonode LSP is generated for that LAN
Router D becomes the new DIS, generates a new pseudonode LSP for that LAN, and purges the old pseudonode LSP generated by Router A
Router D becomes the new DIS, does NOT generate a new pseudonode LSP for that LAN, and does NOT purge the old pseudonode LSP generated by Router A
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更多“单选题There are three routers on a Gigabit Ethernet LAN: Router A, Router B, and Router C. Router A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router A's DIS priority is 64. The LAN is a Level 1-only link. Router D has just been pow”相关问题
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第1题：
A network planning diagram shows a large internetwork with many routers. The configurations show that OSPF has been enabled on all interfaces, I P addresses correctly configured, and OSPF workinG.For which of the following cases would you expect a router to create and flood a Type 2 LSA?（）
A. When OSPF is enabled on a LAN interface, and the router is the only router connected to the subnet.
B. When OSPF is enabled on a point - to -point serial link, and that router has both the higher router ID and higher interface IP address on the link.
C. When OSPF is enabled on a Frame Relay point - to - point subinterface, has the lower RID and lower subinterfa ce IP address, and otherwise uses default OSPF configuration on the interface.
D. When OSPF is enabled on a working LAN interface on a router, and the router has been elected BDR.
E. None of the other answers is correct.
参考答案：E
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第2题：
Refer to the exhibit. What three statements are true about the IS － IS configuration?()
A.The router is in area 49.0001.0002
B.The router acts as a Level 1 - 2 router
C.CLNS routing is enable d for the router
D.The router has a system ID of 0003.0004
E.The interfaces have a functional IS - IS configuration
F.The network service access point selector (NSEL) byte has a value of 0
参考答案：B, E, F
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第3题：
The OSPF process has been started and the networks have been configured for Area 0 as shown in the diagram. The network administrator has several options for configuring RouterB to ensure that it will be preferred as the designated router (DR) for the 172.16.1.0 /24 LAN segment. What configuration tasks could be used to establish this preference (Choose three.)（）。
A.Configure the priority value of the Fa0/0 interface of RouterB to a higher value than any other interface on the Ethernet network.
B.Change the router id of Router B by assigning the IP address 172.16.1.130/24 to the Fa0/0 interface of RouterB.
C.Configure a loopback interface on RouterB with an IP address higher than any IP address on the other routers.
D.Change the priority value of the Fa0/0 interface of RouterB to zero.
E.Change the priority values of the Fa0/0 interfaces of RouterA and RouterC to zero.
F.No further configuration is necessary.
参考答案：A, C, E
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第4题：
Which three statements about the secure domain router are true？（）
- A、The logical router can span across chassis.
- B、The fabric and system controller module are shared by all logical routers.
- C、Each logical router has a distinct fabric and system controller module
- D、The logical router can share a route processor
- E、The logical router cannot share a route processor
正确答案:A,B,E -
第5题：
Router R1 and R2 are both configured for HSRP. Which two statements about the HSRP priorities of these two routers are true？（）
- A、 To assign the HSRP router priority in a standby group， the standby group-number priority priority-value global configuration command must be used.
- B、 The default priority of a router is zero （0）.
- C、 The no standby priority command assigns a priority of 100 to the router.
- D、 Assuming that preempting has also been configured， the router with the lowest priority in an HSRP group would become the active router.
- E、 When two routers in an HSRP standby group are configured with identical priorities， the router with the highest configured IP address will become the active router.
正确答案:C,E -
第6题：
You have a Level 1-only router (Router A) in IS-IS area 49.0001. How does Router A learn how to get to IP prefixes in other areas?（）
- A、Router A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001.
- B、The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 1 link-state PDU (LSP) it floods into area 49.0001.
- C、The Level 1/Level 2 router in area 49.0001 sets the "attached" bit in the Level 2 LSP it floods into area 49.0001.
- D、The Level 1/Level 2 router in area 49.0001 advertises these prefixes into area 49.0001 using a Level 2 LSP it floods into the area.
正确答案:B -
第7题：
There are three IS-IS routers on a Gigabit Ethernet segment: Router A, Router B, and Router C. Each router is configured in the same area and each routers Gigabit Ethernet interface is configured for Level 1-only. Router A is the Designated Intermediate System (DIS). Each routers IP address on that segment is: Router A: 10.1.1.1/24 Router B: 10.1.1.2/24 Router C: 10.2.2.1/26 Which statement is true about all the adjacencies that exist on that LAN?（）
- A、No routers are adjacent with each other.
- B、Only Router A and Router B are adjacent at Level 1.
- C、Only Router A and Router B are adjacent at Level 2.
- D、All three routers are adjacent with each other at Level 1.
正确答案:B -
第8题：
单选题In the IS-IS Designated Intermediate System （DIS） election process， which criteria is used for DIS selection？（）Ahighest router ID first， then highest priority
Bhighest MAC address first， then highest priority
Chighest router ID first， then highest MAC address
Dhighest priority first， then highest router ID
Ehighest priority first， then highest MAC address
正确答案： A解析： 暂无解析 -
第9题：
多选题Which two statements regarding the IS-IS DIS election process are true？ （）AA priority of 0 will prevent a router from becoming a DIS.
BIf the DIS becomes unavailable the backup DIS is promoted to DIS.
CAdding a router with a higher priority than the current DIS will result in the new router becoming DIS.
DSeparate L1 and L2 election processes are held on a brodcast network.
EL1 routers on a broadcast network only establish adjacencies with the DIS.
FIf there is a tie based on priority，the router whose attached interface has the lowest MAC address becomes the DIS.
正确答案： D,B解析： 暂无解析 -
第10题：
单选题You have a Level 1-only router (Router A) in IS-IS area 49.0001. How does Router A learn how to reach prefixes in other areas?（）ARouter A must have a Level 2 adjacency with the Level 1/Level 2 router in area 49.0001.
BThe Level 1/Level 2 router in area 49.0001 sets the attached bit in the Level 2 LSP it floods into area 49.0001.
CThe Level 1/Level 2 router in area 49.0001 sets the attached bit in the Level 1 link-state PDU (LSP) it floods into area 49.0001.
DThe Level 1/Level 2 router in area 49.0001 advertises these prefixes into area 49.0001 using a Level 2 LSP it floods into the area.
正确答案： C解析： 暂无解析 -
第11题：
单选题There are three routers on a Gigabit Ethernet LAN: Router A, Router B, and Router C. Router A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router A's DIS priority is 64. The LAN is a Level 1-only link. Router D has just been powered up on that same LAN and its DIS priority is 80. Which statement is true?（）ARouter A remains the DIS and generates a new pseudonode LSP for that LAN
BRouter A remains the DIS and NO new pseudonode LSP is generated for that LAN
CRouter D becomes the new DIS, generates a new pseudonode LSP for that LAN, and purges the old pseudonode LSP generated by Router A
DRouter D becomes the new DIS, does NOT generate a new pseudonode LSP for that LAN, and does NOT purge the old pseudonode LSP generated by Router A
正确答案： A解析： 暂无解析 -
第12题：
单选题Three IS-IS routers on a broadcast segment have different priority values configured. Which router is elected the DIS on that broadcast segment?（）Athe router with the lowest priority
Bthe router with the highest priority
Cthe router with the highest System ID
Dthe router with the highest IP address
正确答案： A解析： 暂无解析 -
第13题：
Refer to the exhibit. Two routers are connected by Frame Relay and are running OSPF bet ween them. Each router has been configured with the appropriate network statements under router ospf 1, but the routers are not forming an adjacency. Which of the following three commands could be configured on each router to correct this problem?（）
A. RouterC(config - if)#ip ospf network broadcast RouterD(config - if)#ip ospf network broadcast
B. RouterC(config - if)#ip ospf network point - to - point RouterD(config - if)#ip ospf network point - to - point
C. RouterC(config - router)#neighbor 10.100. 100.4 RouterD(config - router)#neighbor 10.100.100.3
D. RouterC(config - router)#neighbor 10.255.255.254 RouterD(config - router)#neighbor 10.255.255.253
参考答案：A, B, D
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第14题：
The Dev － 1 and Dev －3 routers are OSPF neighbors over the Ethernet 0／0 connection. Based on the show ip ospf neighbor output from the Dev － 1 and Dev － 3 routers, which statement is true?()
A. Dev - 1 is the DR because it has a lower OSPF router ID
B. Dev - 3 is the DR because it has a higher OSPF router priority
C. Both Dev - 1 and Dev - 3 are using the def ault OSPF router priority
D. Dev - 3 is the DR because it has a lower OSPF router ID
E. Dev - 1 is the DR because it has a higher OSPF router priority
参考答案：E
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第15题：
In the IS-IS Designated Intermediate System （DIS） election process， which criteria is used for DIS selection？（）
- A、highest router ID first， then highest priority
- B、highest MAC address first， then highest priority
- C、highest router ID first， then highest MAC address
- D、highest priority first， then highest router ID
- E、highest priority first， then highest MAC address
正确答案:E -
第16题：
Which two statements regarding the IS-IS DIS election process are true？ （）
- A、A priority of 0 will prevent a router from becoming a DIS.
- B、If the DIS becomes unavailable the backup DIS is promoted to DIS.
- C、Adding a router with a higher priority than the current DIS will result in the new router becoming DIS.
- D、Separate L1 and L2 election processes are held on a brodcast network.
- E、L1 routers on a broadcast network only establish adjacencies with the DIS.
- F、If there is a tie based on priority，the router whose attached interface has the lowest MAC address becomes the DIS.
正确答案:C,D -
第17题：
A new router is added to an existing HSRP standby group. One of the existing routers is in anactive state， the other is in a standby state. Under what circumstance will the new router becomethe active router？（）
- A、The new router will become active immediately because it’s the newest router introduced intothe group
- B、The new router can become active only when the existing active router and the existing standbyrouter become unavailable
- C、The new router has a lower priority value
- D、The new router will never become active unless the existing active router becomes unavailable
- E、The new router has preempt configured and a higher priority
- F、The new router has a higher priority value
正确答案:E -
第18题：
Three IS-IS routers on a broadcast segment have different priority values configured. Which router is elected the DIS on that broadcast segment?（）
- A、the router with the lowest priority
- B、the router with the highest priority
- C、the router with the highest System ID
- D、the router with the highest IP address
正确答案:B -
第19题：
There are three routers on a Gigabit Ethernet LAN: Router A, Router B, and Router C. Router A is the Designated Intermediate System (DIS) at Level 1 for that LAN. Router A's DIS priority is 64. The LAN is a Level 1-only link. Router D has just been powered up on that same LAN and its DIS priority is 80. Which statement is true?（）
- A、Router A remains the DIS and generates a new pseudonode LSP for that LAN
- B、Router A remains the DIS and NO new pseudonode LSP is generated for that LAN
- C、Router D becomes the new DIS, generates a new pseudonode LSP for that LAN, and purges the old pseudonode LSP generated by Router A
- D、Router D becomes the new DIS, does NOT generate a new pseudonode LSP for that LAN, and does NOT purge the old pseudonode LSP generated by Router A
正确答案:C -
第20题：
单选题A network planning diagram shows a large internetwork with many routers. The configurations show that OSPF has been enabled on all interfaces, I P addresses correctly configured, and OSPF workinG. For which of the following cases would you expect a router to create and flood a Type 2 LSA?（）AWhen OSPF is enabled on a LAN interface, and the router is the only router connected to the subnet.
BWhen OSPF is enabled on a point - to -point serial link, and that router has both the higher router ID and higher interface IP address on the link.
CWhen OSPF is enabled on a Frame Relay point - to - point subinterface, has the lower RID and lower subinterfa ce IP address, and otherwise uses default OSPF configuration on the interface.
DWhen OSPF is enabled on a working LAN interface on a router, and the router has been elected BDR.
ENone of the other answers is correct.
正确答案： C解析： 暂无解析 -
第21题：
单选题A new router is added to an existing HSRP standby group. One of the existing routers is in anactive state， the other is in a standby state. Under what circumstance will the new router becomethe active router？（）AThe new router will become active immediately because it’s the newest router introduced intothe group
BThe new router can become active only when the existing active router and the existing standbyrouter become unavailable
CThe new router has a lower priority value
DThe new router will never become active unless the existing active router becomes unavailable
EThe new router has preempt configured and a higher priority
FThe new router has a higher priority value
正确答案： B解析： 暂无解析 -
第22题：
单选题There are three IS-IS routers on a Gigabit Ethernet segment: Router A, Router B, and Router C. Each router is configured in the same area and each routers Gigabit Ethernet interface is configured for Level 1-only. Router A is the Designated Intermediate System (DIS). Each routers IP address on that segment is: Router A: 10.1.1.1/24 Router B: 10.1.1.2/24 Router C: 10.2.2.1/26 Which statement is true about all the adjacencies that exist on that LAN?（）ANo routers are adjacent with each other.
BOnly Router A and Router B are adjacent at Level 1.
COnly Router A and Router B are adjacent at Level 2.
DAll three routers are adjacent with each other at Level 1.
正确答案： A解析： 暂无解析 -
第23题：
多选题Which three statements about the secure domain router are true？（）AThe logical router can span across chassis.
BThe fabric and system controller module are shared by all logical routers.
CEach logical router has a distinct fabric and system controller module
DThe logical router can share a route processor
EThe logical router cannot share a route processor
正确答案： E,B解析： 暂无解析 -
第24题：
多选题Router R1 and R2 are both configured for HSRP. Which two statements about the HSRP priorities of these two routers are true？（）ATo assign the HSRP router priority in a standby group， the standby group-number priority priority-value global configuration command must be used.
BThe default priority of a router is zero （0）.
CThe no standby priority command assigns a priority of 100 to the router.
DAssuming that preempting has also been configured， the router with the lowest priority in an HSRP group would become the active router.
EWhen two routers in an HSRP standby group are configured with identical priorities， the router with the highest configured IP address will become the active router.
正确答案： D,A解析： 暂无解析