(multiple) Which ICMP packets are used by the PING command?

• A.ICMP Echo Request message
• B.ICMP timestamp request message
• C.ICMP Echo Reply message
• D.ICMP address mask request message

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(single) Which of the following statements about ATM network VP, VC, which is correct?

• A.A VP can include multiple VCs;
• B.VPI occupies the same number of bits in all cells, as does VCI;
  There is no logical connection between D.VP and VC.
• C.A VC can include multiple VPs;

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(single) Is the following description correct? In an EPON network, a service flow is carried by a gemport.

• A.False
• B.True

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(single) MA5600 supports ADSL2+. Which of the following is incorrect about ADSL2+?

• A.The maximum reachable distance is 6.5km
• B.The maximum downstream speed is 24Mbit/s
• C.Spectrum bandwidth is 1.104MHz
• D.Use high frequency band, subchannel (32-511) and subchannels above 512.

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Which of the following single board does not belong to the UA5000's narrowband service board?

• A.A64
• B.ADRI
• C.DSLD
• D.A32

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