When the Ethernet networking is applied, which of the following characteristics can adjust the bandwidth as needed, and dynamically increase or decrease the members in the VCTRUNK without affecting the business? When a member of the virtual concatenation group fails, the bandwidth can be quickly adjusted to ensure the normal transmission of data; when the failed member recovers, the original bandwidth of the virtual concatenation group is automatically restored.

When the Ethernet networking is applied, which of the following characteristics can adjust the bandwidth as needed, and dynamically increase or decrease the members in the VCTRUNK without affecting the business? When a member of the virtual concatenation group fails, the bandwidth can be quickly adjusted to ensure the normal transmission of data; when the failed member recovers, the original bandwidth of the virtual concatenation group is automatically restored.
A . LCAS
B. LAG
C. DLAG
D. QoS

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Answer: A