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This chapter is from the book

This chapter is from the book

Review Questions

The answers to these review questions appear in Appendix A, “Answers to Review Questions.”

  1. Which layer of the OSI reference model contains the MAC and LLC sublayers?

    1. Network layer

    2. Transport layer

    3. Physical layer

    4. Data link layer

  2. Which approach to bandwidth usage consumes all the available frequencies on a medium to transmit data?

    1. Broadband

    2. Baseband

    3. Time-division multiplexing

    4. Simplex

  3. Windowing is provided at what layer of the OSI reference model?

    1. Data link layer

    2. Network layer

    3. Transport layer

    4. Physical layer

  4. IP addresses reside at which layer of the OSI reference model?

    1. Network layer

    2. Session layer

    3. Data link layer

    4. Transport layer

  5. Which of the following is a connectionless transport layer protocol?

    1. IP

    2. TCP

    3. UDP

    4. H.323

  6. Identify the four layers of the TCP/IP stack. (Choose four.)

    1. Session layer

    2. Transport layer

    3. Internet layer

    4. Data link layer

    5. Network layer

    6. Application layer

    7. Network interface layer

  7. What is the range of well-known TCP and UDP ports?

    1. Below 2048

    2. Below 1024

    3. 16,384–32,768

    4. Above 8192

  8. Which protocol supports a secure connection to a remote host via terminal emulation software?

    1. Telnet

    2. SSH

    3. FTP

    4. SFTP

  9. Identify the well-known UDP port number for NTP.

    1. 53

    2. 69

    3. 123

    4. 143

  10. Identify three e-mail protocols. (Choose three.)

    1. SNMP

    2. SMTP

    3. POP3

    4. IMAP4

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