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- Question
In which decade were the first successful diode and triode vacuum tubes invented?
Options- A. 1800s
- B. 1880s
- C. 1890s
- D. 1900s
- Correct Answer
- 1900s
ExplanationIn 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. - 1. Internet Explorer is a...
Options- A. Any person browsing the net
- B. Web Browser
- C. Graphing Package
- D. News Reader Discuss
- 2. What kind of data can you send by e-mail?
Options- A. Audio
- B. Pictures
- C. Video
- D. All of the above Discuss
- 3. Google (www.google.com) is a...
Options- A. Search Engine
- B. Number in Math
- C. Directory of images
- D. Chat service on the web Discuss
- 4. Where are the contents of your computer's hard drive indexed?
Options- A. Yahoo!
- B. Google
- C. MSN
- D. None of the above Discuss
- 5. What are the three main search expressions, or operators, recognized by Boolean logic?
Options- A. FROM, TO, WHOM
- B. AND, OR, NOT
- C. SEARCH, KEYWORD, TEXT
- D. AND, OR, BUT Discuss
- 6. Which of these is a search engine?
Options- A. FTP
- B. Google
- C. Archie
- D. ARPANET Discuss
- 7. When discussing technology, a hot spot is...
Options- A. A small overheated area on a CPU
- B. A place served by public wireless access
- C. Jargon for an X-rated Web site
- D. A faulty area in the programming code Discuss
- 8. "www" stands for...
Options- A. World Wide Web
- B. World Wide Wares
- C. World Wide Wait
- D. World Wide War Discuss
- 9. Name the terminals of an FET.
Options- A. Drain, Gate, Source
- B. Positive, Negative, Neutral
- C. Anode, Cathode, Triode
- D. Emitter, Base, Collector Discuss
- 10. HTML is used to...
Options- A. Plot complicated graphs
- B. Author webpages
- C. Translate one language into another
- D. Solve equations Discuss
Technology problems
Search Results
Correct Answer: Web Browser
Correct Answer: All of the above
Correct Answer: Search Engine
Correct Answer: None of the above
Correct Answer: AND, OR, NOT
Explanation:
The three most commonly used Boolean operators are: AND, OR, and NOT. On the Web, Boolean operators are used in advanced searches to combine search items. For example, an "AND" operator between two words ("football AND television") tells the search engine to find documents that contain both of these words.
Correct Answer: Google
Correct Answer: A place served by public wireless access
Correct Answer: World Wide Web
Correct Answer: Drain, Gate, Source
Correct Answer: Author webpages
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