When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be encapsulated as it is sent across the internetwork()。A.0B.1C.2D.3E.4

题目
When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be encapsulated as it is sent across the internetwork()。

A.0

B.1

C.2

D.3

E.4

相似考题

1.When does the E－series router start monitoring DHCP traffic using the DHCP External function?()A. When the discovery packet enters the router from the DHCP client.B. Only when the offer packet enters the router from the DHCP server.C. When the acknowledge packet enters the router from the DHCP server.D. Only when the discovery packet leaves the router going to the DHCP server.

2.A Telnet session is initiated from host 10.1.1.1. What will happen when it is processed by the firewall filter shown in the exhibit?()A. The packet will be accepted and logged.B. The packet will be discarded and logged.C. The packet will be rejected and a syslog message generated.D. The packet will be accepted and sampled.

3.During OSPF adjacency formation, in which state is a router in when an OSPF hello packet has been sent but bi－directional communication has not been achieved?()A.AB.BC.CD.D

4.Which packet is sent in response to a BGP Open packet?()A. helloB. keepaliveC. BGP openD. notification

更多“When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be encapsulated as it is sent across the internetwork()。 ”相关问题

  • 第1题：

    A PC on a network segment sends data to another PC on a different segment.Which of the following correctly describe the correct order of how this data will be encapsulated?()

    A. Data, Frame, Packet, Segment, Bit

    B. Data, Frame, Segment, Packet, Bit

    C. Data, Packet, Frame, Segment, Bit

    D. Data, Packet, Segment, Frame, Bit

    E. Data, Segment, Frame, Packet, Bit

    F. Data, Segment, Packet, Frame, Bit


    参考答案：F

  • 第2题：

    For (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to. 空白（3）处应选择（）

    • A、source
    • B、route
    • C、destination
    • D、host

    正确答案:A

  • 第3题：

    Which statement about vlan operation on cisco catalyst switches is true?（）

    • A、when a packet is received from an 802.1Q trunk,the vlan id can be determined from the source MAC address table.
    • B、unkown unicast frames are retransmitted only to the ports that belong to the same vlan
    • C、ports between switches should be configured in access mode so that vlans can span across the ports
    • D、broadcast and multicast frames are retransmitted to ports that are configured on different vlan.

    正确答案:B

  • 第4题：

    When you issue the logging trap informational command, what happens? （）

    • A、An information trap is sent to the SNMP server.
    • B、Informational and debug messages are logged to the syslog server.
    • C、All messages are sent to the logging host, where selections are made.
    • D、All messages from emergencies to informational are sent to the logging host.

    正确答案:D

  • 第5题：

    Based on the following output in R1， which statement is true？（）

    • A、If a labeled packet arrives with the top most label of 17， it will be replaced with label 19 and sent out on Ethernet 0/0 interface.
    • B、If a labeled packet arrives with the top most label of 19， it will be replaced with label 17 and sent out on Ethernet 0/0 interface.
    • C、If a labeled packet arrives with the top most label of 17， all the labels will be removed and a clear IP Packet is sent to Next Hop 192.168.0.14 on Ethernet 0/0.
    • D、None of the above.

    正确答案:B

  • 第6题：

    单选题
    When you issue the logging trap informational command, what happens? （）
    A

    An information trap is sent to the SNMP server.

    B

    Informational and debug messages are logged to the syslog server.

    C

    All messages are sent to the logging host, where selections are made.

    D

    All messages from emergencies to informational are sent to the logging host.


    正确答案： B
    解析： 暂无解析

  • 第7题：

    多选题
    If an edge Label Switch Router （LSR） is properly configured，which three combinations are possible？（）
    A

    A received IP packet is forwarded based on the IP destination address and the packet is sent as an IP packet.

    B

    An IP destination exists in the IP forwarding table. A received labeled packet is dropped because the label is not found in the LFIB table.

    C

    There is an MPLS label-switched path toward the destination. A received IP packet is dropped because the destination is not found in the IP forwarding table.

    D

    A received IP packet is forwarded based on the IP destination address and the packet is sent as a labeled packet.

    E

    A received labeled IP packet is forwarded based upon both the label and the IP address.

    F

    A received labeled packet is forwarded based on the label. After the label is swapped，the newly labeled packet is sent.


    正确答案： A,D
    解析： 暂无解析

  • 第8题：

    单选题
    For (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to. 空白（1）处应选择（）
    A

    connectionless

    B

    connection-oriented

    C

    datagram

    D

    telegram


    正确答案： D
    解析： 对于面向连接的服务，我们需要一个虚拟电路子网。让我们看看它是如何工作的。虚电路的核心思想是避免在发送每个数据时为它们选择一个新的路由。相反，当建立一个连接，将从源计算机向目标计算机选择一条路由作为连接设置的一部分并且存储到内部的路由器表中。这条路由承载着所有连接带来的流量，就跟电话系统的工作原理一样。当连接被释放时，虚电路也终止。在面向连接的服务中，每个数据包携带一个标识符，该标识符告诉它所属的虚电路。

  • 第9题：

    单选题
    Which of the following is TRUE about the ping  -f command?（）
    A

     It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the f in the command line. 

    B

     It is useful for flooding from slow character based terminals since it only displays a dot . for each packet sent in fast mode. 

    C

     It is useful for flooding from slow character based terminals since it only displays a dot .       for each packet sent and a backspace on returned in fast mode. 

    D

     The command can only be run by root.


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    Which statement about vlan operation on cisco catalyst switches is true?（）
    A

    when a packet is received from an 802.1Q trunk,the vlan id can be determined from the source MAC address table

    B

    unkown unicast frames are retransmitted only to the ports that belong to the same vlan

    C

    ports between switches should be configured in access mode so that vlans can span across the ports

    D

    broadcast and multicast frames are retransmitted to ports that are configured on different vlan.


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    When does the E-series router start monitoring DHCP traffic using the DHCP External function?（）
    A

    When the discovery packet enters the router from the DHCP client.

    B

    Only when the offer packet enters the router from the DHCP server.

    C

    When the acknowledge packet enters the router from the DHCP server.

    D

    Only when the discovery packet leaves the router going to the DHCP server.


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    Based on the following output in R1， which statement is true？（）
    A

    If a labeled packet arrives with the top most label of 17， it will be replaced with label 19 and sent out on Ethernet 0/0 interface.

    B

    If a labeled packet arrives with the top most label of 19， it will be replaced with label 17 and sent out on Ethernet 0/0 interface.

    C

    If a labeled packet arrives with the top most label of 17， all the labels will be removed and a clear IP Packet is sent to Next Hop 192.168.0.14 on Ethernet 0/0.

    D

    None of the above.


    正确答案： B
    解析： 暂无解析

  • 第13题：

    Which statement about vlan operation on cisco catalyst switches is true?()

    A. when a packet is received from an 802.1Q trunk,the vlan id can be determined from the source MAC address table.

    B. unkown unicast frames are retransmitted only to the ports that belong to the same vlan

    C. ports between switches should be configured in access mode so that vlans can span across the ports

    D. broadcast and multicast frames are retransmitted to ports that are configured on different vlan.


    参考答案：B

  • 第14题：

    Which of the following is TRUE about the ping  -f command?（）

    • A、 It is useful for diagnosing data dependent problems by filling the packet with the byte pattern following the "f" in the command line. 
    • B、 It is useful for flooding from slow character based terminals since it only displays a dot "." for each packet sent in fast mode. 
    • C、 It is useful for flooding from slow character based terminals since it only displays a dot "."       for each packet sent and a backspace on returned in fast mode. 
    • D、 The command can only be run by root.

    正确答案:D

  • 第15题：

    A PC on a network segment sends data to another PC on a different segment.Which of the following correctly describe the correct order of how this data will be encapsulated?（）

    • A、Data, Frame, Packet, Segment, Bit
    • B、Data, Frame, Segment, Packet, Bit
    • C、Data, Packet, Frame, Segment, Bit
    • D、Data, Packet, Segment, Frame, Bit
    • E、Data, Segment, Frame, Packet, Bit
    • F、Data, Segment, Packet, Frame, Bit

    正确答案:F

  • 第16题：

    When a packet is sent from Host 1 to Server 1, in how many different frames will the packet be  encapsulated as it is sent across the internetwork?（）

    • A、0
    • B、1
    • C、2
    • D、3
    • E、4

    正确答案:D

  • 第17题：

    When does the E-series router start monitoring DHCP traffic using the DHCP External function?（）

    • A、When the discovery packet enters the router from the DHCP client.
    • B、Only when the offer packet enters the router from the DHCP server.
    • C、When the acknowledge packet enters the router from the DHCP server.
    • D、Only when the discovery packet leaves the router going to the DHCP server.

    正确答案:D

  • 第18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（1）处应选择（）
    A

    modems

    B

    routers

    C

    switcher

    D

    computers


    正确答案： A
    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19题：

    单选题
    When using Overlay Transport Virtualization （OTV）， how do L2 multicast frames traverse the overlay？（）
    A

     The L2 multicast frames are encapsulated in an OTV packet using the configured control-group multicast address for transport

    B

     The L2 multicast frames are dropped because multicast cannot be carried across the overlay 

    C

     The L2 multicast frames are encapsulated in an OTV packet using the configured data-group multicast address for transport

    D

     The L2 multicast frames are forwarded natively across the overlay based on their multicast IDs


    正确答案： C
    解析： 暂无解析

  • 第20题：

    单选题
    For (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to. 空白（3）处应选择（）
    A

    source

    B

    route

    C

    destination

    D

    host


    正确答案： B
    解析： 对于面向连接的服务，我们需要一个虚拟电路子网。让我们看看它是如何工作的。虚电路的核心思想是避免在发送每个数据时为它们选择一个新的路由。相反，当建立一个连接，将从源计算机向目标计算机选择一条路由作为连接设置的一部分并且存储到内部的路由器表中。这条路由承载着所有连接带来的流量，就跟电话系统的工作原理一样。当连接被释放时，虚电路也终止。在面向连接的服务中，每个数据包携带一个标识符，该标识符告诉它所属的虚电路。

  • 第21题：

    单选题
    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?（）
    A

    Layer 2 TTL

    B

    Layer 3 TTL

    C

    Layer 3 source address

    D

    Layer 3 destination address


    正确答案： D
    解析： 暂无解析

  • 第22题：

    单选题
    Which packet is sent in response to a BGP Open packet?（）
    A

    hello

    B

    keepalive

    C

    BGP open

    D

    notification


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    A PC on a network segment sends data to another PC on a different segment.Which of the following correctly describe the correct order of how this data will be encapsulated?（）
    A

    Data, Frame, Packet, Segment, Bit

    B

    Data, Frame, Segment, Packet, Bit

    C

    Data, Packet, Frame, Segment, Bit

    D

    Data, Packet, Segment, Frame, Bit

    E

    Data, Segment, Frame, Packet, Bit

    F

    Data, Segment, Packet, Frame, Bit


    正确答案： D
    解析： 暂无解析

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