Which statement is true about the internal link between the Routing Engine and the Packet-Forwarding Engine？（）
A. It is only used for exception traffic.
B. It is an FE link called fxp2.
C. It is rate-limited to avoid DDOS attacks.
D. It is only used to send the forwarding-table from the Routing Engine to the Packet-Forwarding Engine.
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“鲁迅说，我吃的是草，挤出来的是牛奶”是什么修辞格（）
A. 对比
B. 夸张
C. 比喻
D. 象征
How many IP addresses can be configured in a given interface？（）
A. one primary and one secondary IP address
B. one IP address
C. as many IP addresses as you want
D. one primary and multiple secondary IP addresses
统计数据的精度是指（）。
A. 最低的随机误差
B. 最小的偏差
C. 保持时间序列的可比性
D. 在最短的时间内取得并公布数据
Which two statements regarding JUNOS architecture are correct？（）
A. The Routing Engine handles all exception traffic.
B. The Routing Engine synchronizes the route table with the PFE
C. The Routing Engine is hot-pluggable.
D. The Routing Engine controls the PFE
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