1. B. The network uses standards defined in TCP/IP RFCs, plus other standards.
2. C. Ethernet
D. TCP/IP mapping
3. A. It exists as a written document.
C. It has been passed through some form of review and approval or certification process.
4. A. De facto standard documents have been reviewed more thoroughly.
C. De facto standards typically mean that the standards group has been authorized by many countries to create standards that apply to multiple countries.
5. B. The data link layer sits lower in the model than the transport layer.
C. The physical layer sits just below the data link layer.
6. B. IEEE
7. D. To keep intellectual property rights to the technology inside the company
8. B. IP is a network layer protocol.
9. B. TCP/IP
10. B. The lower four layers of TCP/IP define the same kinds of functions as the matching layer numbers from OSI.
11. C. The PCs use two wires to create a circuit to send data from PC1 to PC2.
12. B. Ethernet defines MAC addresses, but when used in a TCP/IP network, it does not use the addresses, instead relying on IP addresses.
13. D. Datagram
14. B. Can be written in DDN format
D. Used by routers to make a forwarding decision
15. A. 48 bits in length
16. A. LANs generally connect devices that are nearer to each other, compared to WANs.
D. LANs are purchased, and WANs are leased.
17. B. Two TCP/IP data-link protocols are Ethernet and PPP.
C. Data-link protocols define addresses that identify devices connected to the underlying physical link.
18. D. None of the answers is correct.
19. D. None of the answers is correct.
20. A. Data-link header
B. Network layer header
C. Transport layer header
TCP/IP network: Short for Transmission Control Protocol/Internet Protocol. A protocol for communication between computers, used as a standard for...