單項(xiàng)選擇題

What will significantly degrade DSL performance， regardless of DSL rate or line length？（）

A.Microliters installed between a telephone and shared line
B.POTS splitters at the subscriber’s end of the DSL line
C.POTS splitters at the telco CO
D.None of the other alternatives apply

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單項(xiàng)選擇題

ATM carries IP and PPP information with ATM cells. What ATM adaptation Layer is used when an ATMcell carries IP packets and PPP frames？（）

A.AAU2
B.AAL3
C.AAL4
D.AAL5

多項(xiàng)選擇題

Which two of the following are designated fields for MAC tunneling protocol（802.1 ah）？（）

A.Service Ethertype
B.ISL
C.PseudoLAN TAG
D.802.1q VLAN TAG
E.Control Word
F.Tunnel Label

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What will significantly degrade DSL performance， regardless of DSL rate or line length？ （）

你可能感興趣的試題

ATM carries IP and PPP information with ATM cells. What ATM adaptation Layer is used when an ATMcell carries IP packets and PPP frames？（）

Which two of the following are designated fields for MAC tunneling protocol（802.1 ah）？（）

What will significantly degrade DSL performance， regardless of DSL rate or line length？（）

ATM carries IP and PPP information with ATM cells. What ATM adaptation Layer is used when an ATMcell carries IP packets and PPP frames？（）

Which two of the following are designated fields for MAC tunneling protocol（802.1 ah）？（）