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多选题
What are the DSL-specific factors that require additional bandwidth when supporting Voice-over-IP over an IPSec VPN?（）
A
A voice packet is sent via multiple fixed-length cells; a portion of the last cell is padding, requiring more bandwidth.
B
ADSL typically uses PPPoE encapsulation, which adds additional overhead to each voice packet.
C
A voice packet is sent via multiple fixed-length cells; each cell has about 10% Layer-2 header overhead.
D
IPSec requires additional overhead for the header and hash.
E
ADSL carrier band requires additional bits to be carried over the wire to the DSL Access Concentrator.
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更多 “多选题What are the DSL-specific factors that require additional bandwidth when supporting Voice-over-IP over an IPSec VPN?（）AA voice packet is sent via multiple fixed-length cells; a portion of the last cell is padding, requiring more bandwidth.BADSL typically uses PPPoE encapsulation, which adds additional overhead to each voice packet.CA voice packet is sent via multiple fixed-length cells; each cell has about 10% Layer-2 header overhead.DIPSec requires additional overhead for the header and hash.EADSL carrier band requires additional bits to be carried over the wire to the DSL Access Concentrator.” 相关考题
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