單項(xiàng)選擇題There is MPLS VPN traffic traversing through a TE intermediate router. What is the MPLS packet labelstack sequence (from outer to inner) for the VPN traffic on this router?()

A.TE label, IGP label, VPN label
B.IGP label, TE label, VPN label
C.TE label, VPN label, IGP label
D.VPN label, IGP label, TE label
E.IGP label, VPN label, TE label


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B.Strict mode
C.Loose mode
D.Tunnel mode
E.Safe mode

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A.Multicasting
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E.Backward-explicit congestion notification (BECN)

3.多項(xiàng)選擇題When provisioning for Interactive-Video(e,g,video conferencing traffic)which three statementsdepicts the correct requirements?()

A.Loss should be no more than 1 percent.
B.One-way latency should be no more than 150 ms
C.Jitter should be no more than 30 ms
D.Loss should be no more than 3 percent
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5.單項(xiàng)選擇題Which statement about the Link Control Protocol (LCP) is true?()

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B.LCP is used for PPP CHAP authentication.
C.LCP is used for PPP over ATM (PPPoA) setup.
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E.LCP is used for PPP over Frame Relay (PPPoFR) setup