Digital Communication Questions and Answers
Q1.
The minimum packet size of Ethernet is
Answer :
72 bytes
Q2.
In which technique, packet size are constant?
Answer :
Pure Aloha
Q3.
For a higher throughput value which method works efficiently?
Answer :
R-ALOHA
Q4.
The radio meter consists of
Answer :
Band pass filter
Q5.
Each satellite has ______ transponders.
Answer :
12
Q6.
CDMA is
Answer :
Combination of both
Q7.
Spread spectrum makes ______ difficult.
Answer :
Jamming & Interception
Q8.
In CDMA the incoming signal is _____ with the spreading code.
Answer :
Multiplied
Q9.
The standard building block uses _______ of a key to transform 64-bit input into 64-bit output.
Answer :
48 bit
Q10.
In which method the key-stream is generated independently of the message?
Answer :
Synchronous encryption method
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