If the below statement is false, Explain why

39. pure ALOHA with frame size of 1000[bits] and transmission bit rate of 10[kb/s]. the maximum throughput is achieved when an average of 5 frames are generated pe sec.

40.For slotted ALOHA with frame size of 1000[bits] and transmission bit rate of 10[kb/s]. the maximum throughput is achieved when 10 frames are generated per sec on average.

41. In CSMA/CD, the success of transmission is confirmed by receiving an ACK.

42. There is no collision in a controlled access protocol.

43. In CSMA, no ACK is required.

44. In the case of low offered traffic load. 1-persistent will be more suitable than non-persistent.

45. A switched-hub for wired LAN mimics the physical bus topology.

46. It is easy to use carrier sensing mechanism in satellite communications.

47. It is difficult and expensive to use collision detection mechanism in wireless communications.

48. In CSMA/CA, the success of data transmission is confirmed by receiving an ACK

49. Bluetooth uses a controlled access mechanism for MAC

50. RTS and CTS can handle the hidden station problem.

51. We can use carrier sensing in omni-directional RF transmission environments.

52. Ethernet is more widely used than Token ring because Ethernet has higher efficiency than Token ring.

53. Token ring algorithm can be used with a ring topology, but not with a bus topology

54. For real-time interactive communications GEO is more suitable than LEO.

55. Transmission efficiency is higher with slotted ALOHA than with unslotted ALOHA.

56. WLAN uses RF beam focusing to use CSMA/CA.