PMS

Page 15 of 22

#127 How many layers does the OSI model consist of ?

A)   4
B)   5
C)   8
D)   7
Answer:   D

#128 ____________ Topology each node (computer server peripheral etc) attaches to a common cable.

A)   Star
B)   Tree
C)   Ring
D)   Mesh
Answer:   C

#129 The frequency range of radio signal is between 3 KHz to ________ GHz.

A)   1
B)   2
C)   3
D)   4
Answer:   A

#130 What does WAP stand for?

A)   wireless access place
B)   wireless application protocol
C)   wireless access protocol
D)   wireless access portion
Answer:   B

#131 Which of the following is used to provide internet access and multimedia services at very high speed to the end users?

A)   Wi-Fi
B)   Bluetooth
C)   Infra-red
D)   WiMax
Answer:   D

#132 ____________ Uses 802.11 standard, developed by the institute of electrical and electronic engineers (UEEE).

A)   Wi-Fi
B)   Bluetooth
C)   Infra-red
D)   WiMax
Answer:   A

#133 ___________ signals can be used for short-range communication in a closed area using line-of-sight propagation.

A)   Wi-Fi
B)   Bluetooth
C)   WiMax
D)   Infra-red
Answer:   D

#134 The GPS system consists of ___________ satellites.

A)   20
B)   22
C)   24
D)   25
Answer:   C

Page 15 of 22

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