单项选择题

Which statement describes exception traffic?（）

A. Exception traffic must be sent to the PFE for processing.
B. Exception traffic enters one ingress port and is sent out multiple egress ports.
C. Exception traffic is rate-limited on the internal link to prevent DoS attacks.
D. Exception traffic is processed after forwarding traffic when congestion exists.

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单项选择题

Which statement is correct about the forwarding table?（）

A. The forwarding table is stored only on the PFE
B. The forwarding table contains all known routes
C. The forwarding table is stored on both the RE and PFE
D. The forwarding table is stored only on the RE

多项选择题

What are three benefits of using IPv6?（）

A. IPv6 supports a greater level of security by integrating features that were optional add-ons in IPv4.
B. IPv6 reduces administrative overhead using stateless address autoconfiguration for hosts.
C. IPv6 eliminates the need for private to public NAT using a large address pool.
D. IPv6 provides backward compatibility with IPv4 using the Next Header field.
E. IPv6 represents large IP addresses using dotted decimal notation.

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How many host addresses are available in the /28 network?（）

A. 6
B. 14
C. 28
D. 30