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Questions 1 to 20: Select the best answer to each question. Note that a question and its answers may be split across a page break, so be sure that you have seen the entire question and all the answers before choosing an answer.

 

1. MAC addresses are utilized at the _______ layer of the OSI model.A. Data-Link

B. Application

C. Presentation

D. Transport

 

2. What is the only layer of the TCP/IP model that places information used to perform a frame check sequence at the end of the frame?A. Presentation

B. Transport

C. Network Access

D. Internet

 

3. Which of the following is a Microsoft proprietary LAN protocol?A. NetBEUI

B. IPX/SPX

C. AppleTalk

D. TCP/IP

 

4. Compression occurs at the _______ layer of the OSI model.A. Transport

B. Application

C. Presentation

D. Session

 

5. Which of the following protocols operates at the Data-Link layer of the OSI model?A. DNS

B. TCP

C. Ethernet

D. UDP

 

6. Which of the following provides the communications agreement for a network?

Exam: 402579RR - NETWORKS AND PROTOCOLS

A. A service

B. A protocol

C. An addressing scheme

D. The OSI model

 

7. How does the use of networks reduce the cost of peripherals?A. Networks reduce the overall need for peripherals.

B. Peripherals last longer in a network.

C. Devices are shared, and fewer peripherals are needed.

D. Network peripherals are less expensive.

 

8. Which of the following protocols is not in the TCP/IP suite?A. TCP

B. NCP

C. ARP

D. UDP

 

9. What reference model was created by the DoD?A. TCP/IP

B. OSI

C. NetBIOS

D. CLSI

 

10. The Transport protocol used with a unicast isA. IP.

B. ARP.

C. TCP.

D. UDP.

 

11. What single layer of the TCP/IP model corresponds to three layers of the OSI model?A. Physical

B. Data-Link

C. Session

D. Application

 

12. Which of the following protocols uses both TCP and UDP?A. SNMP

B. FTP

C. DNS

D. SMTP

 

13. Which of the following was the biggest driving force in the creation of networks?

A. Reduced cost and easier installation of software

B. Resource sharing

C. Improved communications

D. Improved security

 

14. What reference model was created by the ISO in the 1970s?A. TCP/IP

B. OSI

C. CLSI

D. DoD

 

15. TCP operates at the _______ layer of the OSI model.A. Application

B. Session

C. Data-Link

D. Transport

 

16. How does the use of networks enhance worker flexibility?A. Users are no longer physically tied to the same computer.

B. Users can utilize directly attached peripherals.

C. Users can control access to their resources.

D. Users can work with tools such as e-mail.

 

17. _______ is the networking protocol used on the Internet.A. NetBIOS

B. NCP

C. TCP/IP

D. IPX/SPX

 

18. SNMP uses which two ports in its operations?A. 161 and 162

B. 159 and 160

C. 157 and 158

D. 163 and 164

 

19. What name is given to the PDU at the Network Access layer of the TCP/IP model?A. Segment

B. Packet

C. Frame

D. Data

 

20. Which of the following is used for e-mail transfer?

End of exam

A. TCP

B. FTP

C. DNS

D. SMTP