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Computer Science - Networking

Exercise : Networking - Section 9
36.
The frequency range : 300 kHz to 3 MHz is used for
AM radio transmission
FM radio transmission
TV transmission
microwave communications, satellite and radar
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
With an IP address of 201.142.23.12, what is your default subnet mask?
0.0.0.0
255.0.0.0
255.255.0.0
255.255.255.0
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
A smart modem can dial, hang up and answer incoming calls automatically. Can you tell who provides the appropriate instruction to the modem for this purpose?
Communications software
Error detecting protocols
Link access procedure (LAP)
Telecommunications
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
IEEE project 802 divides the data link layer into an upper _____ sublayer and a lower _____ sublayer.
HDLC, PDU
PDU, HDLC
MAC, LLC
LLC, MAC
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
Two computers that communicate with each other use a simple parity check to detect errors for ASCII transmissions. Which of the following events will always lead to an undeleted error?
one bit or any odd number of bits inverted in a block of data during transmission
two bits or any even number of bits inverted in a block during transmission
one bit or any odd number of bits inverted in a byte during transmission
two bits or any even number of bits inverted in a byte during transmission
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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