This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Narrowbanding”.
1. Which band is used by Bluetooth in mobiles?
a) VHF band
b) UHF band
c) ISM band
d) Infrared band
Explanation: Bluetooth is a wireless technology. It is used for exchanging data over short distances. It usually uses frequency hopping. It uses ISM band.
2. BSS stands for ________
a) Basic service Set
b) Basic service System
c) Bluetooth service Set
d) Bluetooth service System
Explanation: BBS stands for Basic service Set. It is a term used to describe collection of stations ehich may communicate with each other within an 802.11 network.
3. What do you understand by the term CAPCODE?
a) an encryption scheme
b) an addressing scheme
c) an error-detection scheme
d) a digital modulation scheme
Explanation: CAPCODE is only used as an addressing scheme.
4. The “forward” PCs channel is ________
a) from the base to mobile
b) from the mobile to base
c) from mobile to mobile
d) from base to base
Explanation: If the PCs channel is forwarded then it means that signal goes from the base to the mobile.
5. Among all amplifiers, Common Collector has highest power gain.
Explanation: It is common emitter who has highest power gain. Common emitter has a very high voltage gain and also has good amount of current, so its power gain is high.
6. Find the carrier frequency if the inductance and capacitance are 30μH and 10nF respectively?
7. What is the full form of MSC?
a) Mobile Service Cellular
b) Mobile Switching Center
c) Mobile Switching Cellular
d) Mobile Service Centar
Explanation: MSC stands for Mobile Switching Center. It is a 2G core network element which controls the network switching subsystem elements.
8. LNA stands for __________
a) low noise amplifier
b) low noise amplitude
c) low narrow amplifier
d) low narrow amplitude
Explanation: LNA stands for low noise amplifier. It is used to amplify possibly weak signals such as those as received by antenna.
9. The “payload” in a communication satellite consists of _________
a) solar cells
Explanation: Transponders works as the payload in any communication. It uses for receiving a radio signal and then automatically transmits a different signal.
10. What is the height of the geosynchronous orbit above the equator?
d) depends on satellite velocity
Explanation: The height of the geosynchronous orbit above the equator is approximated as 35,780 km.
Sanfoundry Global Education & Learning Series – Analog Communications.
To practice all areas of Analog Communications, here is complete set of 1000+ Multiple Choice Questions and Answers.