Online courses directory (35)

An age-old and highly skilled trade, carpentry has evolved to incorporate improved building materials and construction methods. Modern-day carpenters find themselves working on a variety of projects that span both the residential and commercial sectors. A sound knowledge of the tools, materials, and building methods is therefore an indispensable requirement of the job. This free online Diploma course introduces the learner to the current practices in the trade. The first section of the course traces the history of the trade from the primitive to the modern times. It focuses on the various building materials, fasteners, adhesives, and tools used by carpenters in the construction industry. A brief explanation of the safety guidelines and procedures is also covered in this section. The essential work performed by carpenters during the construction phase of any project comprises the next section of this course. Here, the learner is introduced to reading plans and elevations, and the methodologies for constructing floor systems, wall and roof framing. The final section of the course deals with the work involved in closing off a structure. From introduction to concrete forms used in construction to the installation of windows, exterior doors and stairs, this section provides a brief overview of these topics. This free Diploma course will be of great interest to professionals who want to learn about contemporary procedures and practices in carpentry. It will also be of interest to all learners who want to further develop their career in carpentry and the construction trade. <br />

Electricity lights up our streets and buildings, and enables us to use and enjoy the many electronic devices that make our lives more comfortable. Skilled electricians and engineers work behind the scenes to ensure that we receive a continuous supply of electric power. In order to do this, they need to have a thorough understanding of the basic concepts and practices of the electrical trade that enables them to install and maintain functional electrical systems. <br /><br />In ALISON's free online diploma course, the first section introduces you to the electrical trade. Topics on electrical safety, electrical circuits, and electrical theory are discussed in this section. The next section of the course focuses on what constitutes an electrical wiring system. This section explains the installation procedures and storage techniques for electrical wiring components such as device boxes, raceways and fittings, conductors and cables. The final section of the course covers the electrical drawings and test equipment used in the trade. Some of this test equipment includes ammeters, galvanometers, voltmeters, multi-meters. <br /><br />ALISON's free Diploma course will be of great interest to professionals in the areas of construction and electrical engineering. Learners who want to gain a practical knowledge and understanding of the electrical trade would also benefit from the concepts explained in this course.<br />

DNS is an integral part of working with the Internet, but what if you don't understand how it works? This course will give you all the insight you need to have a basic understanding of DNS and how it translates http://74.125.224.72/ into http://google.com/! The class is designed for web professionals and almost anyone looking for a walkthrough on general DNS concepts. We will begin with an introduction to the Domain naming system then move on to how the client computers translate DNS information. Lastly, we will look at the major components of a DNS server and clear up how to work with DNS zones and subdomains.