IT Service Management Foundation Practice Test

Explanation
Cloning of data is not within the scope of information technology because it refers to the process of creating an identical copy of data, which is not a specific function or activity related to information technology. Information technology mainly focuses on the management, manipulation, storage, and transmission of data, but not on cloning it.

Explanation
The control phase is not a phase of IT development because it does not involve the actual development or creation of IT systems or software. The control phase typically refers to the phase in which the developed IT systems are monitored, managed, and controlled to ensure their proper functioning and performance. It involves activities such as monitoring system performance, troubleshooting issues, implementing security measures, and making necessary adjustments or improvements to the systems. However, the actual development of IT systems occurs in phases such as the mechanical phase, electronic phase, and pre-mechanical phase.

Explanation
The Williams tube was the first random access digital data storage device. It was invented in 1946 by Freddie Williams and Tom Kilburn at the University of Manchester. The Williams tube used a cathode ray tube to store and retrieve digital information. It worked by using a beam of electrons to write and read data on a screen coated with a thin layer of phosphor. This allowed for fast random access to stored data, making it a significant advancement in computer memory technology.

Explanation
The magnetic tape was invented in 1932.

Explanation
IBM is the correct answer because they were the first company to produce the first hard disk drive. They introduced the IBM 305 RAMAC in 1956, which was the first commercial computer system to use a hard disk drive for data storage. This invention revolutionized the field of data storage and paved the way for the development of modern hard drives.

Explanation
Ted Codd is the correct answer for this question. In the 1970s, he proposed the relational data storage model. This model revolutionized the way data is stored and organized in databases. It introduced the concept of tables with rows and columns, and the use of primary keys to establish relationships between tables. Codd's work laid the foundation for the relational database management systems that are widely used today.

Explanation
In 1981, the first relational database management system (RDBMS) was made available. This system revolutionized the way data was stored and organized, allowing for efficient retrieval and manipulation of data using a structured query language (SQL). Prior to the development of RDBMS, data was typically stored in hierarchical or network databases, which were more complex and less flexible. The introduction of RDBMS marked a significant milestone in the field of database management and laid the foundation for modern data storage and retrieval systems.

Explanation
There are three aspects involved in data transmission.

Explanation
The 16th century saw the emergence of geared devices in Europe. This century was a time of significant advancements in technology and engineering, and the development of geared devices played a crucial role in various industries. Geared devices, such as clocks and mills, revolutionized the way people measured time and harnessed energy. They allowed for more precise and efficient machinery, leading to increased productivity and advancements in various fields. The 16th century marked a turning point in European history with the widespread adoption and innovation of geared devices.

Explanation
The correct answer is 1645. This is the earliest date among the options provided, indicating that the first mechanical calculator was developed in this year.