TCP/IP Configuration and Name Service - Quiz Explanation

The correct answers are indicated below, along with text that explains the correct answers.
 
1. What feature of a TCP/IP network allows users to work with host names rather than numerical addresses?
Please select the best answer.
  A. The network interface
  B. The name service
  C. The routing information
  D. The link layer
  The correct answer is B.The name service allows users to work with host names rather than numerical addresses.
The name service allows a system to convert host names to IP addresses, and vice versa.

2. Which of the following steps pertains to routing during the process of TCP/IP configuration?
Please select the best answer.
  A. Setting a default gateway
  B. Setting up a name service
  C. Configuring the network interface
  D. Converting host names to numeric addresses
  The correct answer is A.
Setting a default gateway is a step pertaining to routing during the process of TCP/IP configuration. The system is told where to send information for machines not on the local network.

3. When a machine is put on a TCP/IP network, one step is to configure the network interface. What does this step accomplish?
Please select the best answer.
  A. It tells the system where to send information for machines not on the local network.
  B. It joins the link-layer portion of the protocol stack to the network (or IP) layer.
  C. It converts numeric addresses to human-readable names.
  D. It directs information among machines “living” on several networks.
  The correct answer is B.
Configuring the network interface joins the link-layer portion of the protocol stack to the network (or IP) layer. The important part of this configuration step is assigning IP addresses.