The PFE floods the packet out of all interfaces.
The PFE drops the packet and sends a destination unreachable notification back to source device.
The PFE forwards the packet to the routing engine for further processing.
The PFE queues the packet and sends a request for a layer 3 lookup to the routing engine.
第1题：
A. The PFE controls the RE by providing Layer 2 and Layer 3 forwarding tables
B. The PFE implements advanced services such as policing, stateless firewall filtering, and class of service
C. The PFE sends traffic to the RE for systematic packet forwarding
D. The PFE receives hardware and environmental status messages from the RE
第2题：
A. The destination is a host on another subnet, so the router will not forward the packet.
B. The destination is a host on the same subnet, so the router will forward the packet.
C. The destination is a broadcast address, so the router will not forward the packet.
D. The destination is a network address, so the router will forward the packet.
第3题：
A. If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, it will
B. If the destination IP address in the outer IP header of ESP does not match the IP address of the ingress interface, it will
C. If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based packet.
D. If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based of inner header, it will decrypt the packet.
第4题：
When an IP packet is Layer 3-switched from a source in one VLAN to a destination in anotherVLAN, which field in a packet will be rewritten? （）
第5题：
The following configuration line was added to router R1 Access-list 101 permit ip 10.25.30.00.0.0.255 any What is the effect of this access list configuration?（）
第6题：
A.The PFE floods the packet out of all interfaces.
B.The PFE drops the packet and sends a destination unreachable notification back to source device.
C.The PFE forwards the packet to the routing engine for furtherprocessing.
D.The PFE queues the packet and sends are quest for a layer3 lookup to the routing engine.
第7题：
A.ermit all packet smatching the first three octets of the source address to all destinations
B.permit all packet matching the last octet of the destination address and accept all source addresses
C.permit all packet matching the host bits in the source address to all destinations
D.permit all packet from the third subnet of the network address to all destinations
第8题：
A. It sends only five ping requests to the 172.18.1.1 destination.
B. It sends a continuous ping with a packet length of five bytes to the 172.18.1.1 destination.
C. It sends five rapid ping requests to the 172.18.1.1 destination.
D. It sends a continuous rapid ping with a packet length of five bytes to the 172.18.1.1 destination.
第9题：
The following configuration line was added to router R1 Access-list 101 permit ip 10.25.30.00.0.0.255 any What is the effect of this access list configuration？（）
第10题：
Assuming that an IP packet is sent from a source address in VLAN1 to a destination address in VLAN2 through a layer-3 switch, which part of the packet will be changed?（）