1 . ............ software allows people to communicate over a network connection while seeing and hearing one another.
- A. Teleconferencing
- B. Videoconferencing
- C. Network operating system
- D. Server
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2 . In a computer, a ............ can perform both input and output functions
- A. Microphone
- B. Trackball
- C. Touch screen
- D. RAM
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3 . which of the following malignancies is associated with radiation?
- A. Burkitt's lymphoma
- B. Acute lyumphoblastic leukaemia
- C. Ovarian carcinoma
- D. Maltoma
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