LAN Switching and Wireless

61. _________ requires that each station first listen to the medium before sending.

1. MA
2. CSMA
3. FDMA
4. CDMA

View answer

62. _________ signals can have an infinite number of values in a range.

1. Analog
2. Digital
3. (a) or (b)
4. None of the above

View answer

63. _________ signals can have only a limited number of values.

1. Analog
2. Digital
3. (a) or (b)
4. None of the above

View answer

64. _________ substitutes eight consecutive zeros with 000VB0VB.

1. B4B8
2. HDB3
3. B8ZS
4. none of the above

View answer

65. _________ substitutes four consecutive zeros with 000V or B00V

1. B4B8
2. HDB3
3. B8ZSf
4. none of the above

View answer

66. _________ technology can be adapted for use in a LAN (ATM LAN).

1. X.25
2. Frame Relay
3. ATM
4. none of the above

View answer

67. _________ technology is a set of technologies develpoed by the telephone companies to provide high data rate transmission.

1. ASL
2. DSL
3. LDS
4. none of the above

View answer

68. _________ uses 1550-mm single mode fiber.

1. 10GBase-S
2. 10GBase-L
3. 10GBase-E
4. none of the above

View answer

69. _________ uses fiber-optic cable.

1. 10Base5
2. 10Base2
3. 10Base-T
4. 10Base-F

View answer

70. _________ uses four pairs of voice-grade, or higher, twisted-pair cable.

1. 100Base-TX
2. 100Base-FX
3. 100Base-T4
4. none of the above

View answer