BUSİNESS INFORMATİON SYSTEMS

The smallest element of data is called a bit, a group of eight bits is called a byte. The capacity of memory and persistent data storage are measured in terms of bytes.

The input devices, such as mouse and keyboard, can send data to a computer system but cannot receive from. On the contrary, the output devices such as monitors and printers receive data from a computer, usually for the purposes of displaying. In this perspective, webcam, barcode reader, microphone, scanners, and sensors (e.g. heat or humidity) are the examples of input devices. Headphone, projector, speaker, printer, monitor are the examples of output devices.

Random access memory (RAM) is used to store programs that are currently running. It can transfer data much faster than the hard disk since information is accessed randomly instead of sequentially. However, unlike the hard drive, RAM is volatile. If the computer is turned off, all data stored in RAM is lost.

The Central Processing Unit (CPU) is the brain of computer that executes instructions. Each CPU has an instruction set which is a group of commands in the machine language. Computer programs are usually written in the high-level programming languages. In order for the CPU to run them they must be converted into the processor’s instruction set.

The tasks of composing, editing and formatting text documents are carried out by word processors. Documents created by the word processors look great and they are easy to edit. However, it is desirable to redistribute them in a format that locks the layout or does not require a word processing software for opening them. Portable Document Format (PDF) has become the de facto standard for satisfying this requirement.

Malicious software, malware in short, is an umbrella term that covers a variety of forms of hostile or intrusive software. Computer viruses, worms, Trojan horses, ransomware, spyware, adware, and scareware are the examples of malicious software.

Android is a mobile operating system developed by Google Inc., based on the Linux kernel and designed primarily for touchscreen mobile devices such as smartphones and tablets.

Hubs: A hub is a device that transmits the data to the all connected computers without checking the destination address.

Guided media is the type of transmission media that is physically tangible. The signals propagate over a solid substance. Three types of guided media are twisted pair cables, coaxial cables, and fiber optic cables.

The Right answer is D)

The Right answer is A ) The data collected through measurement and counting are called quantitative data type. For example, the age of your car and the temperature of your room are quantitative.

A)Data Planning Develops a model of business processes
B) Requirements Specification Define information needs of end users in a business process
C) Conceptual design Expresses all information requirements in the form of a high-level model.
D) Logical Design Translates the conceptual models into the data model of a DBMS.
E) Physical Design Determines the data storage structures and Access methods

The answer is C)

Application software which is exclusively developed to satisfy the needs of an organization rather than individual users is called enterprise software. Business Intelligence (BI) software, Customer Relationship Management (CRM) software, Enterprise Recourse Planning (ERP) software, and accounting software are all the samples of enterprise software. Proprietary software is software that is owned by an individual or a company (usually the one that developed it). There are almost always major restrictions on its use, and its source code is almost always kept secret. The term proprietary is derived from the Latin word proprietas meaning property. Microsoft Office is a proprietary software. The answer is E)

The correct answer is C)

The basic functions of an operating system can
be summarized as follows:
• Memory Management
• Processor Management
• File Management
• Device Management
• Protection and Security

Hubs: A hub is a device that transmits the data to the all connected computers without checking the destination address.
Bridges: A bridge is a device including software that connects two networks which uses the same protocol.
Modems: A model is a device that enables computers to exchange information and communicate using telephone lines. Rear side of a Wi-Fi modem is shown in Figure 2.10. Routers: A router is a hardware that receives, analyzes and forwards the data to the another network. A router is programmable and it can divide a network into various subnets.
Switches: A switch connects computers in a network like hubs but unlike hubs,switches learn destination address after the first communication and do not disturb irrelevant computers with message traffic. The correct answer is A)

Correct answer is D)

General-purpose application software includes such things as word processors, Web browsers, spreadsheets, presentation software, media players, photo editors and games.

V. presentation software is a general-purpose application software and is not to be included therefore , the right answer is B)