What is distortion in signals?
Anonymous Quiz
6%
A device that captures physical phenomena and transforms them into electrical signals
3%
A device used to counter the activity of a transmitter
85%
The alteration of the original shape of a signal
5%
A device that converts the receiver signal into the intended message
How can distortion be classified?
Anonymous Quiz
18%
Frequency or phase selective
2%
Copper wires or fiber optic cables
75%
Linear or non-linear
5%
Wired or wireless
What is the function of an A/D converter in a transmitter?
Anonymous Quiz
28%
To produce radio waves using an antenna
70%
To convert analog signals to digital signals
3%
To decode the received signal
Receiver device counters the activity of the tramsmitter. So this device contajns...... (جت في الامتحان )
Anonymous Quiz
7%
A/D Converter
8%
Modulator
62%
Decoder
24%
All
Which of the following isn't an example of a wired channel?
Anonymous Quiz
4%
Copper wires
77%
Air
5%
Fiber optic cables
14%
ALL
............. refers to actual, measured, bandwidth, at a specific time of day, using specific internet routes, while downloading a specific file
Anonymous Quiz
94%
Throughput
6%
bandwidth
What type of distortion can be non-linear?
Anonymous Quiz
4%
Linear distortion
60%
Phase distortion
37%
Non-linear distortion
Music is
Anonymous Quiz
32%
Analog Message
59%
Digital Message
8%
Digital Message , Analog Message
1%
None
Characterized by data whose values vary over a continuous range
Anonymous Quiz
93%
Analog Message
7%
Digital Message
Local Area Networks (LANs) are characterized by:
Anonymous Quiz
8%
Large geographical area
3%
Ownership by multiple organizations
89%
High data rates and usually owned by the same organization
Wide Area Networks (WANs) are known for:
Anonymous Quiz
2%
Supporting small geographical areas
92%
Common carrier circuits and slower speed links
6%
Usually owned by same organization
Choose The Faster
Anonymous Quiz
9%
LAN -> WAN -> MAN
3%
WAN -> LAN -> MAN
80%
LAN -> MAN -> WAN
7%
WAN -> MAN -> LAN
Which of the following LAN topologies uses a central node to connect all devices in a star-like configuration?
Anonymous Quiz
5%
Bus topology
3%
Ring topology
8%
Mesh topology
83%
Star topology
In a bus topology, how are devices connected?
Anonymous Quiz
10%
Each device is connected to a central hub or switch.
78%
Each device is connected in a linear daisy-chain manner.
3%
Each device is connected in a circular loop.
9%
Each device is connected to multiple other devices.