Computer Awareness

41. What is the name given to the wireless network communication over short distances using radio or infrared signals?

[A] Wireless Local Area Network
[B] Local Area Wireless Network
[C] Both a and b
[D] None of the Above

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42. What are the other names for a Network Interface Card?

[A] LAN adaptor
[B] Network adaptor
[C] Network Card
[D] All of the above

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43. Which of the following represents bit length?

[A] 2 (Propagation speed * bit duration)
[B] Propagation speed/ bit duration
[C] 1/2 (Propagation speed * bit duration)
[D] Propagation speed * bit duration

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44. Which of these standards is used to define higher layer LAN protocols?

[A] IEEE 802.15
[B] IEEE 802.11
[C] IEEE 802.7
[D] IEEE 802.1

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45. What does the number ’10’ depict in 10BASE-T?

[A] 10 Kbps
[B] 10 Mbps
[C] 10 Gbps
[D] 10 Tbps

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46. Which of the following hardware device is essential for a computer to connect to a wireless network?

[A] Graphics card
[B] Wireless Printer
[C] Wireless adapter
[D] None of the above

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47. What should be the minimum antenna size for a signal with the wavelength λ ((in metre) ?

[A] λ
[B] λ/2
[C] λ/4
[D] 2λ

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48. Which of these provided the first online service to offer electronic mail capabilities to personal computer users?

[B] Microsoft
[C] CompuServe

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49. Which of the following is correct about Digital Subscriber Line?

[A] It is always on
[B] It is faster than Dial-up
[C] Internet and phone can be used in the same time
[D] All of the above

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50. Which of these ports is used by SNMP?

[A] 161
[B] 465
[C] 22
[D] 143

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