NETWORKING - PHYSICAL LAYER MCQ

Networks

Title
physical layer provides
In asynchronous serial communication the physical layer provides
The physical layer is responsible for
A single channel is shared by multiple signals by
Baud means?
Which of the following devices takes data sent from one network device and forwards it to all devices on the network regardless of the intended recipient?
Which of the following devices takes data sent from one network device and forwards it to the destination node based on MAC address?
which of the following devices is used to connect different network segments and manage the traffic between them?
Unipolar, bipolar, and polar encoding are types of _______ encoding
______ encoding has a transition at the middle of each bit
______ encoding has a transition at the beginning of each 0 bit
PCM is an example of _______ conversion
If the frequency spectrum of a signal has a bandwidth of 500 Hz with the highest frequency at 600 Hz, what should be the sampling rate, according to the Nyquist theorem?
The Nyquist theorem specifies the minimum sampling rate to be_______
Which of the following encoding methods does not provide for synchronization?
Which encoding method uses alternating positive and negative values for 1s?
Which quantization level results in a more faithful reproduction of the signal?
Block coding can help in _______ at the receiver
In _______ transmission, a start bit and a stop bit frame a character byte
In asynchronous transmission, the gap time between bytes is _______

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