Exercise Section 1 Section 2 Section 3 “Time and tide wait for none.” – Alexander Pope 31. In which decade were the first successful diode and triode vacuum tubes invented? A. 1800s B. 1880s C. 1890s D. 1900s Answer & Explanation Answer: Option D Explanation: In 1904, John Ambrose Fleming invented the first practical electron tube called the ‘Fleming Valve’, which is a diode rectifier. In 1906, Lee de Forest invented the audion later called the triode, which provided signal amplification. View Answer Workspace Report Discuss in Forum 32. RAM stands for… A. Random Access Memory B. Really Annoying Machine C. Read A Manual D. Real Absolute Memory Answer & Explanation Answer: Option A Explanation: No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum 33. Hardware devices that are not part of the main computer system and are often added later to the system. A. Peripheral B. Clip art C. Highlight D. Execute Answer & Explanation Answer: Option A Explanation: No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum 34. On which of the following sites can you set up your email account: A. Www.linux.org B. Www.gre.org C. Www.syvum.com D. Www.hotmail.com Answer & Explanation Answer: Option D Explanation: No answer description available for this question. Let us discuss. View Answer Workspace Report Discuss in Forum 35. The main computer that stores the files that can be sent to computers that are networked together is… A. Clip art B. Mother board C. Peripheral D. File server Answer & Explanation Answer: Option D Explanation: No answer description available for this question