Chapter 1, Problem 13QY

write in html and script

Define Uniform Resource Locator (URL)

Explain what a network protocol is and its role in data communication.

The transport layer of the Internet is responsible for facilitating the transfer of data across different networks. This layer is in charge of facilitating communication between networks.

Explain the purpose of DNS (Domain Name System) in translating human-readable domain names into IP addresses.

The Internet's transport layer transfers data between networks. This layer facilitates network data exchange.

Explain the role of network protocols in data communication and give examples of common network protocols.

Explain the role of DNS (Domain Name System) in web addressing and resolution.

Global-Travel, an on-line reservation system Global-Travel is an airline that sells all its tickets through an on-line system on the Internet. Prospective travellers register their details by filling in the form available on the company's web site. Once a registration has been confirmed as valid, the travellers can proceed by selecting the destination to which they wish to travel, the date of travel, and the type of ticket they wish to purchase. Only those of destinations to which Global-Travel flies appear on the list of destinations for customers to choose from. Once a destination has been selected, the date box displays only those days of the week on which Global-Travel flies to the selected destination.Once all ticket details are entered, the customer submits the details to the systems by clicking on the appropriate button. The system responds by either accepting the reservation or rejecting it. If a reservation is rejected, the system displays the reason (e.g., no available places…