CS601 – MF-2010
Paper-3
Effective network mean that the network has fast delivery, timeliness and
high bandwidth
duplex transmission
accurate transmission
low bandwidth
Set of rules that govern communication is called
OSI model
Protocol
TCP/IP model
Datagram
Frequency of a failure and network recovery time after a failure are measures of the ____________ of a network.
Performance
Reliability
Security
Feasibility
Which is not an element of protocol
semantics
timing
communication service module
_______ is a multipoint topology.
Ring
Mesh
Tree
Bus
Trailer is only added at ________layer of OSI model.
data link
physical
network
application
Layers 5, 6 and 7 also called as network support layers.
True
False
software
hardware
both hardware and software
Data link layer deals with mechanical and electrical specifications of transmission medium and interface
True
False
Encryption and encoding are the same terms.
True
False
Fourier transform tells us that any digital signal can be decomposed into infinite number of periodic signals
True
False
A periodic signal completes one cycle in 0.001 s. What is the frequency?
1 Hz
100 Hz
1 KHz
1 MHz
In a time-domain plot, the horizontal axis is measure of _____________.
signal amplitude
frequency
phase
time
DC component is also termed as Direct current component or a component with non-zero frequency.
True
False
PCM is the first process of PAM.
True
False
The powerful carrier signal is called as the___________
carrier frequency
base signal
carrier frequency and base signal
none of given
In case of ASK a bit is represented by varying the_______ of carrier signal.
amplitude
frequency
time
amplitude and frequency
Amplitude in ASK is more resistive to EMI and Noise.
True
False
A 56k modem can download at a rate of __________ Kbps and upload at a rate of __________ Kbps.
33.6: 33.6
33.6: 56.6
56.6: 33.6
56.6: 56.6
There are _________________ types of serial transmission:
1
2
3
4
Define Aperiodic signal? 2
What are DTE and DCE? 2
How does synchronous transmission occur? 3
What is significant bandwidth? 3
What do you understand by the term DCE? Explain DCE. [5]
What is composite signal? 5
