CCNA Routing and Switching Complete Study Guide - Todd Lammle

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networks

      14. A_________is an example of a device that operates only at the physical layer.

      A. Hub

      B. Switch

      C. Router

      D. Bridge

      15. Which of the following is not a benefit of using a reference model?

      A. It divides the network communication process into smaller and simpler components.

      B. It encourages industry standardization.

      C. It enforces consistency across vendors.

      D. It allows various types of network hardware and software to communicate.

      16. Which of the following statements is not true with regard to routers?

      A. They forward broadcasts by default.

      B. They can filter the network based on Network layer information.

      C. They perform path selection.

      D. They perform packet switching.

      17. Switches break up_______domains, and routers break up_______domains.

      A. broadcast, broadcast

      B. collision, collision

      C. collision, broadcast

      D. broadcast, collision

      18. How many collision domains are present in the following diagram?

Diagram shows a router on center that is connected to a switch on left, a bridge on top and a hub on bottom. Hosts are connected through hubs to each of the three devices.

      A. 8

      B. 9

      C. 10

      D. 11

      19. Which of the following layers of the OSI model is not involved in defining how the applications within the end stations will communicate with each other as well as with users?

      A. Transport

      B. Application

      C. Presentation

      D. Session

      20. Which of the following is the only device that operates at all layers of the OSI model?

      A. Network host

      B. Switch

      C. Router

      D. Bridge

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