A router receives an IPv6 packet which is 2000 bytes in length. The MTU of the outgoing interface is 1500 bytes. Which action will the router take?（）A、Forward the packet.B、Fragment the packet.C、Drop the packet silently.D、Drop the packet and send an ICMPv6 message.
A router receives an IPv6 packet which is 2000 bytes in length. The MTU of the outgoing interface is 1500 bytes. Which action will the router take?（）
- A、Forward the packet.
- B、Fragment the packet.
- C、Drop the packet silently.
- D、Drop the packet and send an ICMPv6 message.
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阅读下面的短文，回答问题 [When an IP packet arrives at a router, generally the router looks at the destination address of the packet, and forwards the packet to one of its network interfaces. The forwarding decision is usually done by looking up the destination address from another data structure called a forwarding table. The forwarding table is created by the router using the routing table and possible routing policies existing in the router. The router then creates a table where it lists which networks are accessible through which of the routers network interfaces. An IP router looks at every IP packet individually and does the forwarding decision on a packet-by-packet basis. If something changes in the routers routing table, a packet can take a different route from a preceding packet even if it has the same destination.] From the paragraph above，we can see that the router （ ） a forwarding table according to the routing table and possible routing policies existing in the router. When an IP packet arrives at a router, the （ ） part of packet is normally checked by the router. An IP router checks every IP Packet individually and makes the forwarding decision based on （ ）.A．is generating B．generate C．is generated D．generates A．forwarding table B．network interfaces C．routing policies D．destination address A．the destination address and network interfaces B．forwarding table and network interfaces C．the destination address and forward table D．routing policies and routing table
An internet is a combination of networks connected by (71) .When a datagram goes from a source to a (72) ，it will probably pass many (73) until it reaches the router attached to the destination network．A router receives a (74) from a network and passes it to another network．A router is usually attached to several networks．When it receives a packet，to which network should it pass the packet? The decision is based on optimization： Which of the available (75) is the optimum pathway?A．modemsB．routersC．switchesD．computers
Which action statement in a policy list causes a packet to be placed in an outgoing port queue without performing an IP route lookup?() A.filterB.forwardC.next-hopD.next-interface
A router receives an IPv6 packet which is 2000 bytes in length. The MTU of the outgoing interface is 1500 bytes. Which action will the router take?() A. Forward the packet.B. Fragment the packet.C. Drop the packet silently.D. Drop the packet and send an ICMPv6 message.
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A router receives a packet on interface 172.16.45.66／26. The source IP of the packet is 172.16.45.127／26 and the destination is 172.16.46.191／26.How will the router handle the packet?() 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.
Refer to the exhibit. What will Router1 do when it receives the data frame shown?() A.Router1 will strip off the source MAC address and replace it with the MAC address 0000.0c36.6965.B.Router1 will strip off the source IP address and replace it with the IP address 192.168.40.1.C.Router1 will strip off the destination MAC address and replace it with the MAC address 0000.0c07.4320.D. Router1 will strip off the destination IP address and replace it with the IP address of 192.168.40.1.E.Router1 will forward the data packet out interface FastEthernet0/1.F.Router1 will forward the data packet out interface FastEthernet0/2.
If the router R1 has a packet with a destination address 192.168.1.255, what describes the operation of the network()。 A.R1 will forward the packet out all interfaces.B.R1 will drop this packet because this it is not a valid IP address.C.As R1 forwards the frame containing this packet, Sw-A will add 192.168.1.255 to its MAC table.D.R1 will encapsulate the packet in a frame with a destination MAC address of FF-FF-FF-FF-FF-FFE.As R1 forwards the frame containing this packet, Sw-A will forward it to the device assigned the IP address of 192.168.1.255.
Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE and IPsec tunnel, over the DSL connection, destined for an Enterprise network. Which of the following answers best describes the router's logic that tells the router, for a given packet, to apply GRE encapsulation to the packet?（）A、When the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interfaceB、When routing the packet, matching a route whose outgoing interface is the GRE tunnel interfaceC、When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interfaceD、When permitted by an ACL that was referenced in the associated crypto map
How does an IPv6 router deal with a packet that is larger than the outgoing interface MTU？（）A、It will fragment the packet at Layer 2.B、It will fragment the packet at Layer 3.C、It will drop the packet and send an ICMPv6 message "packet too big" back to the source.D、It will drop the packet.
What are two possible actions an IOS IPS can take if a packet in a session matches a signature？（）A、reset the connectionB、forward the packetC、check the packet against an ACLD、drop the packet
An internet is a combination of networks connected by (1). When a datagram goes from a source to a (2), it will probably pass many (3) until it reaches the router attached to the destination network. A router receives a (4) from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet? The decision is based on optimization: Which of the available (5) is the optimum pathway?空白（2）处应选择（）A、userB、hostC、cityD、destination
A router receives an IPv6 packet which is 2000 bytes in length. The MTU of the outgoing interface is 1500 bytes. What action will the router take？（）A、forwards the packetB、fragments the packetC、drops the packet silentlyD、drops the packet and sends an ICMP message
By default if equal-cost paths exists for the same destination, which action will the router take?（）A、Drop half the trafficB、Make a copy of the traffic and send it to both testinationsC、Load-balance traffic between the available pathsD、Randomly select one of the available paths to send traffic
A traditional router is better suited than a firewall device for which function？（）A、VPN establishmentB、packet-based forwardingC、stateful packet processingD、Network Address Translation
Which statement is true about The QoS Class Fibre Channel？（）A、 Cannot be disabledB、 Cannot have the CoS changedC、 Can have "Packet Drop" enabledD、 Is multicast optimizedE、 Can have the MTU changed
给了两段documentation里的描述，问这个时候发哪种类型的ICMP包。 The interface on which the packet comes into the router is the same interface on which the packet gets routed out. The subnet or network of the source IP address is on the same subnet or network of the next-hop IP address of the routed packet.
Which of the following describe router functions?（）A、Packet switchingB、Collision prevention on a LAN segmentC、Packet filteringD、Broadcast domain enlargementE、Broadcast forwardingF、Internetwork communication
A router receives a packet on interface 172.16.45.66/26. The source IP of the packet is 172.16.45.127/26 and the destination is 172.16.46.191/26.How will the router handle the packet?（）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.
Firewall filters can perform which two actions？（）A、Log packet.B、Count packet.C、Set packet metric.D、Decrement packet TTL.E、Change destination IP address.
Which action statement in a policy list causes a packet to be placed in an outgoing port queue without performing an IP route lookup?（）A、filterB、forwardC、next-hopD、next-interface
A packet is evaluated against three user-defined terms within a firewall filter and no match isfound. What correctly describes the action the firewall filter will take for this packet?（）A、The filter will permit the packet and take no additional action.B、The filter will reject the packet and send an ICMP message back to the sender.C、The filter will discard the packet and take no additional action.D、The filter will permit the packet and write a log entry to the firewall log.
问答题给了两段documentation里的描述，问这个时候发哪种类型的ICMP包。 The interface on which the packet comes into the router is the same interface on which the packet gets routed out. The subnet or network of the source IP address is on the same subnet or network of the next-hop IP address of the routed packet.
单选题A router receives an IPv6 packet which is 2000 bytes in length. The MTU of the outgoing interface is 1500 bytes. Which action will the router take?（）AForward the packet.BFragment the packet.CDrop the packet silently.DDrop the packet and send an ICMPv6 message.
单选题A router receives a packet on interface 172.16.45.66/26. The source IP of the packet is 172.16.45.127/26 and the destination is 172.16.46.191/26.How will the router handle the packet?（）AThe destination is a host on another subnet, so the router will not forward the packet.BThe destination is a host on the same subnet, so the router will forward the packet.CThe destination is a broadcast address, so the router will not forward the packet.DThe destination is a network address, so the router will forward the packet.
单选题A packet is evaluated against three user-defined terms within a firewall filter and no match is found. What correctly describes the action the firewall filter will take for this packet?（）AThe filter will permit the packet and take no additional action.BThe filter will reject the packet and send an ICMP message back to the sender.CThe filter will discard the packet and take no additional action.DThe filter will permit the packet and write a log entry to the firewall log.
单选题How does an IPv6 router deal with a packet that is larger than the outgoing interface MTU？（）AIt will fragment the packet at Layer 2.BIt will fragment the packet at Layer 3.CIt will drop the packet and send an ICMPv6 message packet too big back to the source.DIt will drop the packet.