A.True
B.False
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A.40
B.400
C.4000
D.40000
A.It is used for signaling on-hook and off-hook status
B.It carries CRC information for error detection
C.It is used for a control and performance information
D.It is used for a frame’s synchronization and alignment
A.The modem is commanded by the CMTS to set to the specific channel
B.The modem uses the default value in the broadcom chipset
C.The modem tuner sets a level as defined by the DOCSIS specification
D.The modem tuner scans the downstream spectrum until digital QAM modulated signal is encountered
A.VTP
B.802.1 q
C.CDP
D.Skinny Station Protocol
A.Latency remains the same， but throughput is decreased.
B.Latency remains the same， but error correction effectives may also be reduced.
C.Latency is increased， but faster error correction occurs.
D.Fewer ATM PVCs can be provisioned on DSL line.
最新試題
In optical transmission systems， chirped lasers are used for the purpose of：（）.
Which option describes a benefits of IPv6 VPN Provider Edge？（）
Which tree of these are types of Ethernet Virtue Connections （EVCs） in the MEF concept？（）
Which two statements about 10 Gigabit Ethernet （10GE） are true？（）
Which information is carried in the OSPFv3 intra-area Prefix LSA？（）
Two islands of IPv6 networks that are running ISIS （IPv6 IGP） must be connected using a tunnel over anIPv4 network. Which tunneling method can be used to achieve this goal？（）
Which of the following is used to periodically multicast by DIS on a LAN to ensure IS-IS link state databaseaccuracy？（）
What is the BGP synchronization rule？（）
What method of streaming live video is the least taxing on bandwidth in a large enterprise environment？（）
Which three statements about MPLS traffic engineering （MPLS TE） are true？ （）