TAILIEUCHUNG - CCNA 1 and 2 Companion Guide, Revised (Cisco Networking Academy Program) part 15

Cisco Networking Academy Program CCNA 1 and 2 Companion Guide, Revised part 15 is the Cisco approved textbook to use alongside version of the Cisco Networking Academy Program CCNA 1 and CCNA 2 web-based courses. The topics covered provide you with the necessary knowledge to begin your preparation for the CCNA certification exam (640-801, or 640-821 and 640-811) and to enter the field of network administration. | Page 109 Tuesday May 20 2003 2 53 PM Check Your Understanding 109 12. What is the name of the part of a company s LAN that is made available to select parties such as employees customers and partners A. The Internet B. The extranet C. The intranet D. The LAN 13. What is the movement of objects through layers A. Wrapping B. Flow C. Traveling D. Transmission 14. The OSI model has how many layers A. Four B. Five C. Six D. Seven 15. What is the OSI model A. A conceptual framework that specifies how information travels through networks B. A model that describes how data makes its way from one application program to another throughout a network C. A conceptual framework that specifies which network functions occur at each layer D. All of the above 16. Which of the following is the correct order of the network layers A. 1 Physical 2 Data link 3 Transport 4 Network 5 Presentation 6 Session 7 Application 4 Page 110 Tuesday May 20 2003 2 53 PM 110 Chapter 2 Networking Fundamentals B. 1 Physical 2 Data link 3 Network 4 Transport 5 Session 6 Presentation 7 Application C. 1 Physical 2 Data link 3 Network 4 Session 5 Transport 6 Application 7 Presentation D. 1 Physical 2 Network 3 Session 4 Data link 5 Transport 6 Application 7 Presentation 17. Which layer of the OSI model handles physical addressing network topology network access and flow control A. The physical layer B. The data link layer C. The transport layer D. The network layer 18. Which of the following best defines encapsulation A. Segmenting data so that it flows uninterrupted through the network B. Compressing data so that it moves faster C. Moving data in groups so that it stays together D. Wrapping data in a particular protocol header I Page 111 Tuesday May 20 2003 2 53 PM Check Your Understanding 111 19. An e-mail message is sent from Host A to Host B on a LAN. Before this message can be sent the data must be encapsulated. Which of the following best describes what happens after a .

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