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Unformatted text preview: Essay 124. List three commercial Internet service providers. Answer: Three Internet service providers are national service providers (AOL), regional service providers, and wireless service providers. Difficulty level: Hard Page: 32 125. Label and define the elements of a typical e-mail message. Answer: A typical e-mail message has three basic elements: header, message, and signature. The header appears first and typically includes the address, subject and any attachments. The letter or message comes next and is typically short and to the point. The signature line provides additional information about the sender. Typically, this information includes the sender's name, address, and telephone number. Difficulty level: Medium Page: 32 126. Explain the parts of a URL. Answer: URLs are addresses of Web resources. The first part is the protocol. The protocol http:// is by far the most common. The second part presents the domain name or the name of the server where the resource is located, and the type of domain (org, net, gov, edu)....
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- Spring '09