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WorksheetsDDC23-24_Semi-Final Quiz
Total questions: 20
Worksheet time: 20mins
Which of the following is true about digital signals?
Continuous wave form
Represented by continuous electromagnetic waves
Discrete in nature
Represent sequence of voltage pulses
What is the term used for random disturbance or fluctuation in analog or digital signal?
Attenuation
Dispersion
Noise
Impulse
Which type of cable is made of two plastic insulated copper wires twisted together to form a single media?
Power Lines
Coaxial Cable
Fiber Optics
Twisted Pair Cable
What is the technique to mix and send multiple data streams over a single medium called?
Channel Capacity
Multiplexing
Switching
Transmission Impairment
Which of the following is a type of guided media?
Fiber Optics
Wireless
Power Lines
Coaxial Cable
What is the process for converting digital data into digital signal called?
Transmission Impairment
Switching
Multiplexing
Line Coding
Which type of modulation alters the phase to reflect the change in voltage of analog data signal?
Phase Modulation
Frequency Modulation
Quadrature Phase Shift Keying
Amplitude Modulation
What is the Layer-1 technology that uses power cables to transmit data signals?
Fiber Optics
Coaxial Cable
Power Line Communication
Twisted Pair Cable
Which type of transmission mode requires only one communication channel?
Asynchronous Serial Transmission
Parallel Transmission
Serial Transmission
Synchronous Serial Transmission
What is the technique used to convert analog wave into digital data?
Amplitude Shift Keying
Frequency Shift Keying
Phase Shift Keying
Pulse Code Modulation
Which type of encoding uses multiple voltage levels to represent binary values?
Polar Encoding
Bipolar Encoding
Manchester
Differential Manchester
What is the property of light that has been used in fiber optic transmission?
Refraction at 90 degree
Travels in a straight line
Penetrates through walls
High frequency range
Which type of transmission mode has no importance of timing?
Synchronous Serial Transmission
Serial Transmission
Asynchronous Serial Transmission
Parallel Transmission
What is the process for converting analog data into digital form called?
Sampling
Quantization
Analog-to-Digital Conversion
Encoding
Which type of modulation uses two frequencies to represent binary digits?
Amplitude Shift Keying
Frequency Shift Keying
Phase Shift Keying
Quadrature Phase Shift Keying
Physical layer of the OSI model is also known as:
Layer 2
Layer 7
Layer 3
Layer 1
What are sets of clearly defined rules, regulations, standards, and procedures that enable hardware and software developers to make devices and applications that function properly at a particular layer?
Protocol
TCP/IP
Networks
Interconnection
What is the process of converting analog signals into digital form called?
Amplitude Shift Keying
Frequency Shift Keying
Phase Shift Keying
Analog-to-Digital Conversion
Which type of modulation alters the frequency to reflect the change in voltage of analog data signal?
Frequency Modulation
Phase Modulation
Quadrature Phase Shift Keying
Amplitude Modulation
What is the property of light that has been used in fiber optic transmission?
Refraction at 90 degree
Travels in a straight line
Penetrates through walls
High frequency range
