AD HOC AND SENSOR NETWORK MCQ QUESTION
UNIT II SENSOR NETWORKS - INTRODUCTION & ARCHITECTURES
1. A form of modulation in which the amplitude of a carrier wave is varied in accordance with some characteristics of the modulating signal, is known as ___________
angle modulation
aloha
amplitude modulation
modem
Answer C. amplitude modulation
2 . Modulation in which two binary values are represented by two different amplitudes of the carrier frequency is known as ___________
amplitude shift keying
amplitude
amplitude modulation
aloha
Answer A. amplitude shift keying
3 . The simultaneous transmission of data to a number of stations is known as ____________
broadcast
bandwidth
analog transmission
aloha
Answer A. broadcast
4 . Which layer of OSI determines the interface of the system with the user?
Network
Application
Data link
Physical
Answer B. Application
5 . Which of the following condition is used to transmit two packets over a medium at the same time?
Synchronous
Collision
Contention
Asynchronous
Answer B. Collision
6 . Which of the following summation operation is performed on the bits to check an error-detecting code?
Codec
Coder-decoder
Checksum
Attenuation
Answer C. Checksum
7 . Frame relay operates in the _________
application, presentation
session, transport
physical, data link
data link, network
Answer C. physical, data link
8. Repeaters function in the ________ layers
application, presentation
session, transport
physical, data link
data link, network
Answer C. physical, data link
9 . Which of the following is not a connecting device?
Bridge
Gateway
Transceiver
Hub
Answer C. Transceiver
10 . Which layer in the network supports Gateways?
Lower 3
Upper 4
All 7 Layers
All but the physical layer
Answer C. All 7 Layers
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