made easy theory book

Question

which of the following statement is correct with respect to half duplex communication?

a) error correction is not possible

b)always a pair of physical links is necessary'

c) two connections can be used for sending and receiving data

d)it cannot be used in broadcast networks

Answer 1

is it A ?

Comments

Yes.please explain

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becoz here is given that it is half duplex, so we know in half duplex  the transmission of data in just one direction at a time. For example, a walkie-talkie is a half-duplex device because only one party can talk at a time. In contrast, a telephone is a full-duplex device because both parties can talk simultaneously. Duplex modes often are used in reference to network data transmissions. So according to half duplex defination we can conclude that error connection is not possible. so ans is A.

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correct me if i am wrong ?