Question

Let us say that the SBRU information system includes four subsystems: Resort relations, Student booking, Accounting and finance, and Social networking. The first three are purely Web applications, so access to those will be through an Internet connection to a Web server at the SBRU home office. The Social networking subsystem has built-in chat capabilities. It relies on Internet access for the students, as students compare notes before they book their travel reservations and as they chat while traveling. To function properly, the system obviously requires a wireless network at each resort during the trip. SBRU isn’t responsible for installing or maintaining the resort wireless network; they only plan to provide some design specifications and guidelines to each resort. The resort will be responsible for connecting to the Internet and for providing a secure wireless environment for the students.

1. Design the environment for the SBRU information system by drawing a network diagram. Include what might be necessary to support online chatting capabilities.

2. Considering that everything is designed to operate through the Internet with browsers or smart phones, how simple does this architecture appear to be? Can you see why Web and smart phone applications are so appealing?

3. What aspect of design becomes extremely important to protect the integrity of the system?

Answer 1

1.

Network diagram for Spring Breaks ‘R’ Us Travel Service (SBRU) information system:

• Network diagram for Spring Breaks ‘R’ Us Travel Service (SBRU) information system is as shown below

Flow of diagram:

The above diagrammatic representation represents the hotel configuration.

• In this hotel configuration, the client computers such as smart phone devices, laptops and desktop computers are connected to the application server.

• This application server is connected to the database server and chat database server through the internet connection.

o This chat database server supports the online chatting for users

Purpose of each device:

Client computers:

• The client computer completes the computational task of the users.

Internet:

• The internet is a wide range of network that connects computers throughout the world.

Application server:

• The application server gives the business logic for the application program.

Database server:

• The database server gives database services to programs or computers.

2.

Consider that everything is intended to work through the Internet by browsers or through smart phones.

Architecture of a design:

• The three-layer client/server configuration is a simple architecture used for the above design.

Reason for Smart phone applications and web are interesting:

• The reasons for Smart phone applications and web are so interesting is as follows:

o The difficulty of communication with client devices needs user interface with definition of HTML (Hyper Text Markup Language) pages.

o The same configuration fits the chat facility

3.

Aspect of design:

The important aspect of design to protect the integrity of the system is as follows:

• Integrity can refer to both the protection of the system and to the robustness.

• In various hotels and resorts possibly the weakest link will be the access points.