Which of the following can be used to block unauthorized access while allowing authorized communications on a device or network?

A. Network router
B. Personal firewall
C. Hardware that uses NAT (network address translation)
D. All of the above


Answer: D

Computer Science & Information Technology

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A input B output C process D feedback

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The standard output stream is named ____.

A. stdin B. stdout C. instream D. ostream

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When you start PowerPoint, the program opens in Slide Show view.

Answer the following statement true (T) or false (F)

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A computer that provides support for multiple H.323 terminals and manages communication between them is known as what term below?

A. ?H.323 gateway B. ?H.323 gatekeeper C. ?MCU D. ?H.323 server

Computer Science & Information Technology