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46. Which of the following is an important characteristic of LAN?

A. application independent interfaces
B. unlimited expansion
C. low cost access for low bandwidth channels
D. parallel transmission
E. None of the above

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47. Which of the following is a wrong example of network layer:

A. Internet Protocol (IP) ARPANET
B. X. 25 Packet Level Protocol (PLP) – ISO
C. Source routing and Domain naming – Usenet
D. X.25 level 2 – ISO
E. None of the above

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48. A 2000-character text file has to be transmitted by using a 1,200 baud modem. Can you tell how long will it take?

A. 2 seconds
B. 20 seconds
C. 120 seconds
D. 12 seconds
E. None of the above

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