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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?（）A Forward the packet.B Fragment the packet.C Drop the packet silently.D Drop the packet and send an ICM

题目
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?（）
A

Forward the packet.

B

Fragment the packet.

C

Drop the packet silently.

D

Drop the packet and send an ICMPv6 message.

相似考题

1.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 router’s 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 router’s 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

2.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

3.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.

4.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

更多“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?（）A Forward the packet.B Fragment the packet.C Drop the packet silently.D Drop the packet and send an ICM”相关问题

  • 第1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?（）

    A. When the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interface

    B. When routing the packet, matching a route whose outgoing interface is the GRE tunnel interface

    C. When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interface

    D. When permitted by an ACL that was referenced in the associated crypto map


    参考答案：B

  • 第2题：

    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-FF

    E.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.


    参考答案：B

  • 第3题：

    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.

    正确答案:C

  • 第4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（）

    • A、user
    • B、host
    • C、city
    • D、destination

    正确答案:D

  • 第5题：

    By default if equal-cost paths exists for the same destination, which action will the router take?（）

    • A、Drop half the traffic
    • B、Make a copy of the traffic and send it to both testinations
    • C、Load-balance traffic between the available paths
    • D、Randomly select one of the available paths to send traffic

    正确答案:D

  • 第6题：

    Which statement is true about The QoS Class Fibre Channel？（）

    • A、 Cannot be disabled
    • B、 Cannot have the CoS changed
    • C、 Can have "Packet Drop" enabled
    • D、 Is multicast optimized
    • E、 Can have the MTU changed

    正确答案:A

  • 第7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?（）

    • 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.

    正确答案:C

  • 第8题：

    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、filter
    • B、forward
    • C、next-hop
    • D、next-interface

    正确答案:D

  • 第9题：

    单选题
    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

    filter

    B

    forward

    C

    next-hop

    D

    next-interface


    正确答案： D
    解析： 暂无解析

  • 第10题：

    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?（）
    A

    Forward the packet.

    B

    Fragment the packet.

    C

    Drop the packet silently.

    D

    Drop the packet and send an ICMPv6 message.


    正确答案： B
    解析： 暂无解析

  • 第11题：

    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（）
    A

    user

    B

    host

    C

    city

    D

    destination


    正确答案： D
    解析： 互联网是由不同的网络通过路由器互联起来的。当数据包从源地发往目的地时，在到达目的地网络之前它可能经过多个路由器。路由器从一个网络接收到数据包之后就转发到另外一个网络。然而，一个路由器往往与几个网络连接，当路由器接收到一个数据时，它应该将数据包传向哪个网络呢？这将基于路径最优化决策。

  • 第12题：

    单选题
    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-FF

    E

    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.


    正确答案： A
    解析： 暂无解析

  • 第13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?()

    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.


    参考答案：C

  • 第14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?（）

    • A、When the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interface
    • B、When routing the packet, matching a route whose outgoing interface is the GRE tunnel interface
    • C、When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interface
    • D、When permitted by an ACL that was referenced in the associated crypto map

    正确答案:B

  • 第15题：

    What are two possible actions an IOS IPS can take if a packet in a session matches a signature？（）

    • A、reset the connection
    • B、forward the packet
    • C、check the packet against an ACL
    • D、drop the packet

    正确答案:A,D

  • 第16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

    正确答案:D

  • 第17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?（）

    • A、Forward the packet.
    • B、Fragment the packet.
    • C、Drop the packet silently.
    • D、Drop the packet and send an ICMPv6 message.

    正确答案:D

  • 第18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.


    正确答案:ICMP类型5重定向消息。

  • 第19题：

    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.

    正确答案:A,B

  • 第20题：

    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


    正确答案： A
    解析： 暂无解析

  • 第21题：

    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.

    正确答案： ICMP类型5重定向消息。
    解析： 暂无解析

  • 第22题：

    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?（）
    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.


    正确答案： B
    解析： 暂无解析

  • 第23题：

    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?（）
    A

    When the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interface

    B

    When routing the packet, matching a route whose outgoing interface is the GRE tunnel interface

    C

    When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interface

    D

    When permitted by an ACL that was referenced in the associated crypto map


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    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.


    正确答案： C
    解析： 暂无解析

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