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WorksheetsQUIZ 1
Total questions: 20
Worksheet time: 8mins
Those are the components of data communication system EXCEPT
Sender
Message
Standard
Medium
How many cables are needed if 6 devices are arranged in mesh topology?
6
12
15
30
Which topology has no terminated ends?
(a)
For an effective and efficient network, these criteria are needed EXCEPT
Connectivity
Performance
Reliability
Security
What connection is used when Abigail makes a local telephone call to Michael?
Point-to-point
Multipoint
No connection
Trailer is normally added to which layer?
(a)
Which layer is responsible for process-to-process delivery?
Application layer
Transport layer
Network layer
Session layer
Framing is the process happening in _____________ layer.
session
physical
data link
presentation
Host-to-network layer in TCP/IP equivalent to the network layer in OSI model.
TRUE
FALSE
What is the lowest level of addressing?
Physical address
Logical address
Port address
Specific address
Which is one of the impairment causes?
Propagation
Distortion
Bandwidth limitation
Amplification
Calculate the SNRdB if the power of signal is 45 mW and the power of noise is 60 μW.
27.75 dB
29.75 dB
28.75 dB
30 dB
Shannon capacity formula is used to calculate the data rate in a noiseless channel.
TRUE
FALSE
These characteristics are used to measure performance EXCEPT
delay
bandwidth
throughput
gain
The data transmission in serial transmission is slow.
TRUE
FALSE
Which one is used to combine digital signal in multiplexing?
TDM
WDM
FDM
Combination of FDM and WDM
Why is WDM commonly used for multiplexing optical signals?
WDM uses very high frequency
WDM can be used for long distance
The speed for WDM is very fast
WDM offers very wide bandwidth
Which technique is used in TDM if the data rate is not an integral multiple of other input lines?
Pulse stuffing
Multiple slot allocation
Multilevel multiplexing
The acceptable level for jitter is below
10 ms
30 ms
20 ms
40 ms
Calculate the bandwidth required to multiplex 5 voice channels, each with a bandwidth of 10 kHz, along with guard bands of 500 Hz.
50 kHz
50.5 kHz
52 kHz
55 kHz
