[单选]
Refer to the exhibit. MPLS has been enabled on router PE11. Which of these statements is correct regarding the output display shown in the exhibit? （）

A . CEF switching is not needed for MPLS operation.
B . CEF switching is only needed to forward labeled packets.
C . CEF switching is needed on both ingress and egress interfaces on which MPLS is enabled.
D . Interface-level CEF switching is needed only on egress interfaces that are sending IP packets on which the egress LSR performs the label imposition process.
E . Interface-level CEF switching is needed only on ingress interfaces that are receiving IP packets on which the ingress LSR performs the label imposition process.

Which Cisco product family can simultaneously implement firewall, VPN, content security, network access control, virtualization, anD content filtering?（） intrusion prevention systems。 catalyst switches。 adaptive security appliances。 protect link gateway。尾矿库排水构筑物（）必须严格按设计要求及时封堵，并确保施工质量。使用时。使用前。停用后。计算机的基本工作原理是什么？儒家提出的“省察克治”，说的就是道德自律问题。证券公司的承销方式可分为（）？包销、分销。包销、代销。分销、代销。包销、分销和代销。

Refer to the exhibit. MPLS has been enabled on router PE11. Which of these statements is correct regarding the output display shown in the exhibit? （）

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[单选] Refer to the exhibit. MPLS has been enabled on router PE11. Which of these statements is correct regarding the output display shown in the exhibit? （）

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[单选]
Refer to the exhibit. MPLS has been enabled on router PE11. Which of these statements is correct regarding the output display shown in the exhibit? （）