单选题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？（）Aforwards the packetBfragments the packetCdrops the packet silentlyDdrops the packet and sends an ICMP message
单选题
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 packet
B
fragments the packet
C
drops the packet silently
D
drops the packet and sends an ICMP message
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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
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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
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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
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 a packet from a neighbor with an MPLS shim header value of 0.What does the router do with this packet?（）A、It performs a label pop operation and an IP lookup.B、It performs a label swap operation and an IP lookup.C、It sends an error message toward the egress router.D、It sends an error message toward the ingress router.
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单选题Refer to the exhibit. A router has a 256 kbps Frame Relay circuit connected to interface serial 0/0. As a large FTP packet is being placed into the hardware transmit queue of interface serial 0/0， a voice packet is placed into the priority queue of that interface. How， and in what order， wi the packets be transmitted？（）Athe voice packet will be transmitted first， followed by the FTP packet in its entiretyBthe voice packet will be transmitted first， followed by the fragmented FTP packetCthe FTP packet will be fragmented and the voice packet will be interleavedDthe FTP packet will be transmitted first in its entirety， follow by the voice 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（）AuserBhostCcityDdestination
单选题If the PFE does not have a route to the destination address of a packet, which action will be taken?（）AThe PFE floods the packet out of all interfaces.BThe PFE drops the packet and sends a destination unreachable notification back to source device.CThe PFE forwards the packet to the routing engine for furtherprocessing.DThe PFE queues the packet and sends are quest for a layer3 lookup to the routing engine.
单选题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?（）AWhen the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interfaceBWhen routing the packet, matching a route whose outgoing interface is the GRE tunnel interfaceCWhen routing the packet, matching a route whose outgoing interface is the IPsec tunnel interfaceDWhen permitted by an ACL that was referenced in the associated crypto map
单选题Which action does the ping 172.18.1.1 size 5 command perform?（）AIt sends only five ping requests to the 172.18.1.1 destination.BIt sends a continuous ping with a packet length of five bytes to the 172.18.1.1 destination.CIt sends five rapid ping requests to the 172.18.1.1 destination.DIt sends a continuous rapid ping with a packet length of five bytes to the 172.18.1.1 destination.
单选题A router receives a packet from a neighbor with an MPLS shim header value of 0.What does the router do with this packet?（）AIt performs a label pop operation and an IP lookup.BIt performs a label swap operation and an IP lookup.CIt sends an error message toward the egress router.DIt sends an error message toward the ingress router.
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.