Review Questions

  1. Describe how the subnet mask affects the maximum number of hosts that can be put on a TCP/IP network.

  2. Name the three default address classes and the subnet masks associated with them.

  3. Identify the IPv4 private address ranges.

  4. What are some advantages IPv6 has over IPv4?

  5. The UDP protocol is said to be connectionless. Describe this concept and its consequences for applications that use UDP.

  6. What is a TCP port? Give some examples of common TCP ports and the applications and protocols that use them.

  7. What user command is frequently used to send ICMP messages to remote hosts to verify those hosts’ connectivity?

  8. Describe the contents and use of /etc/hosts.

  9. In what configuration file are DNS servers listed? What is intended if the local loopback address is included there on a workstation?

  10. Name two modes of the netstat command and the program’s output in each case.

  11. Describe why the route command is needed for a single interface on a nonrouting workstation.

  12. How does traceroute determine the identities of intermediate gateways?

  13. Describe the advantages and consequences of implementing DHCP.

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