Question No. 1[ 1 point]

What is a foreign agent and explain its relationship with the home agent.

Question No. 2[ 3 point]

Give three differences between Multichannel Multipoint Distribution Service (MMDS) and Local Multipoint Distribution Service (LMDS).

Question No. 3 [ 1 point]

If a total of 33MHz of bandwidth is allocated to a particular FDD cellular telephone system which uses two 25kHz simplex channels to provide full duplex voice and control channels.  Calculate the number of channels available per cell if a system uses 4-cell reuses.

 

Question No. 4 [1 point]

• What do broadband access networks aim for?
• Give four main existing technologies of broadband access networks

 

Question No. 5 [3 point]

• What is a splitter for ADSL?  
• What is a configuration profile for an ADSL interface?
• What are the possible modes of configuration profile?

 

Question No. 6 [1 point]

A half-duplex channel is carrying a 4-Mbps signal. Calculate the bandwidth of the channel in Hertz for the following modulated signals:

• QPSK
• 16-QAM

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