This set of Analog Communications Multiple Choice Questions & Answers (MCQs) focuses on “Intersymbol Interference”.
1. What is the full-form of UTP?
a) Unshielded Twisted-Pair copper wire
b) Untwisted-Pair copper wire
c) Uniquely Twisted-Pair copper wire
d) Unshielded Thermal-Pair copper wire
Explanation: UTP stands for Unshielded Twisted-Pair copper wire. Unshielded in UTP refers to the lack of metallic shielding around copper wires. The twisted pair helps to minimize electronic interference.
2. NIC stands for ________
a) Network Interface Card
b) Network Interface Cable
c) Network Interface Code
d) Network Internal Card
Explanation: NIC stands for Network Interface Card. It is a computer circuit board that is installed in a computer so that it can be connected to a network.
3. Why CSMA/CD network has a maximum length for cables?
a) to increase the data rate
b) to decrease the data rate
c) to prevent packets from reaching all other nodes
d) to make sure that all other nodes hear a collision in progress
Explanation: CSMA/CD is a media access control used in early Ethernet technology for local area networking. Cables used in CSMA/CD has maximum length when compared to others to make sure that all other nodes hear a collision in progress.
4. The Clapp oscillator is _________
a) an advanced version of FETs
b) a type of crystal controlled oscillators
c) modified form of Colpitts oscillator
d) modified form of Hartley oscillator
Explanation: Clapp oscillator is just an advanced form of Colpitts oscillator.
5. Consider an AM broadcast station which transmits modulating frequencies up to 10kHz. If it transmits a frequency of 1000 kHz. Find its maximum and minimum upper and lower sidebands frequencies and also the total bandwidth?
a) 900 KHz, 820 KHz, 1000 Hz
b) 720 KHz, 650 KHz, 1020 Hz
c) 1010 KHz, 880 KHz, 15000 Hz
d) 1010 KHz, 990 KHz, 20000 Hz
Explanation: Maximum Frequency, fm = 1000 + 10 = 1010 kHz. Minimum Frequency, fl = 1000 – 10 = 990 kHz and bandwidth = fm – fl = 1010 – 990 =20000 Hz.
Explanation: When two noise voltage V1 and V2 are combined, the resulting total voltage VT comes out to be .
7. Shot noise is generated in ________
b) copper wires
c) transistors and diodes
Explanation: Shot noise noise originate from discrete nature of electric charge. It is mostly generated in transistors and diodes.
8. Radians per second is equal to _________
b) phase angle
c) phase deviation
Explanation: Radians per second is equal to the value 2πf.
9. Repeaters are not required for fiber optic cable lengths upto ________
Explanation: If the length of fiber optic cable is upto 100 km, the there is no need of repeaters in that circuit.
10. FTTC stands for ________
a) Fiber To The Curb
b) Fiber Telephone Transmission Cable
c) Fiber Transmission Timing Cable
d) Fiber Transmission Timing Constraint
Explanation: FTTC stands for Fiber To The Curb. FTTC refers to the installation and use of optical fiber cable directly to the curbs near homes as a replacement for plain old telephone service (POTS). It is basically the removal of all telephone lines and replacing them with optical fiber lines.
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.