Quiz No 2 Data communication (CS601) Solution and Discussion Spring 2014 Due Date: June 04, 2014

Dear Students,

Quiz No. 2 of CS601 will be held on June 03, 2014 and will also remain open on June 04, 2014.

Lecture no. 11 to 20 will be included in the quiz.

You are required to attempt the quiz as early as possible once it is available to you.

Best of Luck! Regards,

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Replies to This Discussion

6. A sine wave is

periodic and discrete
aperiodic and discrete
periodic and continuous
aperiodic and continuous


7. The accuracy of any digital reproduction of an analog signal depends upon the number of _____ are taken.

Bits
Amplitude
Samples
Frequency


8. ________is the rate of change with respect to time.

Voltage
Time
Frequency
Amplitude


9. Digitizing an Analog Signal is called ________

Analog-to-Digital Conversion
Digital-to-Digital Conversion
Digital-to-Analog Conversion
Analog-to-Analog Conversion

10. The limiting factors of ___________ are the physical capabilities of the carrier.
ASK
fsk
psk

Ahmad reply kaha han?

In _________ type of encoding, 1’s and 0’s generated by the computer are translated into voltage pulses that can be propagated over the wire

Digital/digital
Analog/digital
Digital/analog
Analog/analog


2:-- A sine wave is defined by _______ characteristics.

2

3

4

5

3:- ___________ can be measured by measuring the vertical distance from a given point on the wave form to the horizontal axis

Phase
Amplitude
Frequency

.
4:- The sampling rate must be at least _______ the highest frequency.

twice
half
thrice
once


5:- In synchronous transmission the ___________ separates that string into the bytes or characters it need to reconstruct the information.

Receiver
Sender
Transmitter
None of the given


6:- Bit rate is always _________to Baud rate.

less than
les than or equal to
greater than


7:- What is the period of A Sine wave having frequency of 10 Hz.

0.2
0.1
0.5
0.3


8:- AM signal requires __________ the BW of original signal

(2 times) (twice)

9:- A sine wave in the ______ domain can be represented by one single spike in the _____ domain.
time; phase
frequency; time (not sure)
time; frequency
phase; time

10:- RZ stand for.........
return to zero
return a zero
return to Z

Question 07: 1 / 10 = 0.1 sec

*Source: Lecture # 12

Few extra Quiz Questions with solution...

1. Signals can be __analog or digital__

2. Frequency and period are __inverse__ of each other

3. __Frequency__ is the rate of change with respect to time.

4. __Phase__ describes the position of the waveform relative to time 0.

5. A sine wave in the __time____ domain can be represented by one single spike in the __frequncy___ domain.

6. A ____single-frequency_____ sine wave is not useful in data communications; we need to send a ___composite____ signal.

thanxxxxxxxxxxxx 

Thanks.....

Ahmad Bhi jaan !!!!!!!!!!

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