. The _____________ layer Converts bits into electronic signals for outgoing messages.

Transport

Network

Physical

Session

Q3. The difference between the maximum and minimum signal heights is called________________

Frequency

Amplitude

Bandwidth

Phase

Q4. The difference between the highest and lowest frequencies of the constituent parts of an analog signal is called__________________

Wavelength

Frequency

Amplitude

Bandwidth

Q5. If a system that operates at 1000 baud has four signal levels then the system can transfer ___________________ bits per second

1000

2000

3000

4000

Q6.A digital signal represents ___________________

Continuous mathematical function

Bits

Bytes

All of the above

Q7. If the time required for one cycle of a signal is 2 seconds then the frequency will be ___________

0.5 Hertz

1 Hertz

1.5 Hertz

2 Hertz

Q8. By the____________ applications arose that allowed users to transfer images easily

a.1960

b.1970

c.1980

d.1990

Q9. The ___________ layer is responsible for dialog control and synchronization.

Presentation

Transport

Session

Application

Q10. _______ Waves are especially important in information sources because natural phenomena produce it.

Sine

Cosine

Tangent

Both a & b