Question

2. Network does not provide security to us.
3. In full duplex, information can move in both directions,
4. The efficiency of network is increased with increase of computers.
data transmission takes place​

Answer 1

Explanation:

Sometimes called full duplex, to differentiate from half-duplex. With a duplex radio, two frequencies used—transmit and receive. The radio is able to transmit and receive simultaneously, allowing both parties to speak and listen at the same time like a telephone conversation. In fact, a common application for duplex radios is with cordless telephones. With duplex radios, usually it is necessary to monitor both frequencies to get the entire conversation. However, some systems retransmit both sides of the conversation over one of the frequencies. Transmitting both sides on one channel is common with cordless phones. So always beneficial to try to monitor both frequencies to see if one retransmits both sides. If one does, it saves you the work of having to monitor the other.

If you are only hearing part of a conversation on your scanner you are probably listening to a two-frequency simplex or full duplex conversation, so this should be a clue that you have another frequency that you need to find. Once you’ve found both the send and receive channels, program both frequencies into your radio to monitor them.