计算机类考试2022思科认证模拟考试题免费下载290

1. [单选题]常见的LSA有几种类型()

A. 4
B. 5
C. 6
D. 7

2. [单选题]标准访问控制列表的数字标识范围是（）。

A. 1-50
B. 1-99
C. 1-100
D. 1-199

3. [单选题]配置路由器时，封装PPP协议的命令是：()

A. encap ppp
B. ppp
C. group ppp
D. int ppp

4. [单选题]路由器上端口fa0/0,其最大传输速率是（）Mbit/s

A. 128
B. 10
C. 100
D. 1000

5. [单选题]帧中继环境中，CIR的含义是（）

A. 提高线路速率
B. 保证线路速率
C. 降低线路速率
D. 配置线路速率

6. [多选题]How could the Ezonexam corporation benefit from using VLANs on their network?(Select three answer choices.)

A. VLANs allow access to network services based on department, not physical location.
B. VLANs utilize packet filtering to enhance network security.
C. VLANs provide a low-latency, high bandwidth internetworking alternative.
D. VLANs provide a method of communication between IP addresses in large networks.
E. VLANs establish segmented broadcast domains in switched networks.
F. F. VLANs can greatly simplify adding, moving, or changing hosts on the network.

7. [多选题]As the Ezonexam network administrator, you are required to have a firm understanding of the OSI model. Why does the data communication industry use the layered OSI reference model? (Choose two)

A. It enables equipment from different vendors to use the same electronic components, thus saving research and development funds
B. It encourages industry standardization by defining what functions occur at each layer of the model
C. It divides the network communication process into smaller and simpler components; thus aiding component development, design and troubleshooting
D. It provides a means by which changes in functionality in one layer require changes in other layers
E. It supports the evolution of multiple competing standards and thus provides business opportunities for equipment manufacturers

8. [多选题]With regard to Ethernet media access methods, which of the following are true?(Choose all that apply.)

A. A device waits for an electronic signal before transmitting.
B. A device listens and waits until the media is not busy before transmitting.
C. All devices on an Ethernet segment see data that passes on the network medium.
D. Only the sender and the receiver devices see data that passes on the network medium.
E. Ethernet networks allow you to configured devises with higher transmission priority.

9. [单选题]What is the purpose of the Spanning Tree Protocol (STP)?

A. To prevent routing loops
B. To create a default route
C. To provide multiple gateways for hosts
D. To maintain a loop-free Layer 2 network topology
E. To enhance the functions of SNMP

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