CCNA Routing and Switching Complete Study Guide. Todd LammleЧитать онлайн книгу.
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?
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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