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There are three IS-IS routers on a Gigabit Ethernet segment:

题目
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?（）
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.

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相似问题和答案

第1题：

目前人们普遍采用的用Ethernet组建企业网的全面解决方案是：桌面系统采用传输速率为10Mbps的Ethernet，部门级系统采用速率为100Mbps的Fast Ethernet，企业级系统采用传输速率为( )。

A．1 00Mbps的Fast Ethernet

B．1 00Mbps的Gigabit Ethernet

C．1 000Mbps的Fast Ethernet

D．1 000Mbps的Gigabit Ethernet


正确答案：D
解析：用Ethernet组建企业网的全面解决方案是：桌面系统采用传输速率为10Mbps的Ethernet，部门级系统采用速率为100Mbps的Fast Ethernet，企业级系统采用传输速率为。1000Mbps的Gigabit Ethernet。

第2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3题：

Gigabit Ethernet的传输速率比Fast Ethernet快( )倍。

A．10

B．5

C．8

D．100


正确答案：A
解析：Gigabit Ethernet的传输速率比Fast Ethernet快10倍。Gigabit Ethernet的传输速率是1000 Mbit/s，Fast Ethernet的传输速率是100 Mbit/s。

第4题：

Which three of these Metro Ethernet services map to E－Line services that are defined by the MEF?()

A. Ethernet Private Line

B. Ethernet Wire Service

C. Ethernet Relay Service

D. Ethernet Multipoint Service

E. Ethernet Relay Multipoint Service


参考答案：A, B, C

第5题：

Gigabit Ethernet的传输速率达到了【 】Mbit/s。


正确答案：1000
1000

第6题：

Gigabit Ethernet的传输速率比Fast Ethernet快______倍。

A．10

B．5

C． 8

D．100


正确答案：A
解析：Gigabit Ethernet的传输速率比Fast Ethernet快10倍。Gigabit Ethernet的传输速率是1000Mbps，Fast Ethernet的传输速率是100Mbps。

第7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8题：

Gigabit Ethernet的传输速率达到【 】Mbps。


正确答案：1000
1000 解析：千兆以太网的传输速率比快速以太网快10倍，Fast Ethernet速率为100Mbps， Gigabit Ethernet传输速率为1Gbps。千兆以太网保留着传统10Mbps速率以太网的所有特征(相同的数据帧格式、相同的介质访问控制方法、相同的组网技术)，只是将传统以太网每个比特的发送时间由100ns降低到1ns。

第9题：

Which cisco product family is the recommended platform for 10 gigabit ethernet in the data center?()

A.Catalyst

B.ISR

C.vCenter

D.Nexus

E.ASR


参考答案：D

第10题：

A customer is considering purchasing either a Cisco Catalyst 2960 or Cisco Catalyst Express 500. Which feature can only be found on the Catalyst 2960？（）  

  • A、 48 Ethernet 10/100 ports
  • B、 Fast Ethernet and Gigabit Ethernet connectivity
  • C、 dual-purpose copper or fiber uplinks
  • D、 standalone fixed-configuration Layer 2 switching

正确答案:A

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