Networks can be interconnected by different devices.In the physical layer, networks can be connected by（ ） or hubs, which just move the bits from one network to an identical network.A.repeaters B.relays C.connectors D.modems

题目
Networks can be interconnected by different devices.In the physical layer, networks can be connected by（ ） or hubs, which just move the bits from one network to an identical network.

A.repeaters
B.relays
C.connectors
D.modems
相似考题

1.●LANs can be connected by using bridges，which operate in the (67) .(67) A．data-link layerB．Physical layerC．network layerD．transport layer

2.How could the Ezonexam corporation benefit from using VLANs on their network?(Select three answer choices.)A. VLANs allow access to network services based on department, not physical location.B. VLANs utilize packet filtering to enhance network security.C. VLANs provide a low-latency, high bandwidth internetworking alternative.D. VLANs provide a method of communication between IP addresses in large networks.E. VLANs establish segmented broadcast domains in switched networks.F. VLANs can greatly simplify adding, moving, or changing hosts on the network.

3.●Networks can be interconnected by different devices．In the physical layer，networks can be connected by (66) or Hubs，which just move the bits from one network to an identical network．One layer up we find bridgas and swiehes,which operate at data link layer．They can accept (67) ，examine the MAC address，and forward the frames to a different network while doing minor protocol translation in the process．In the network layer，we have routers that can connect two netwoks．If two networks have (68) network layer，the router may be able to translate between the packet formats．In the transport layer we find transport gateway，which can interface between the two transport connections．Finally，in the application layer，application gateways translate message (69) ．As an example，gateways between Internet e-mail and X．400 e-mail must (70) the e-mail message and change various header fields．(66) A．reapersB．relaysC．connectsD．modems(67) A．framesB．bytesC．packagesD．cells(68) A．specialB．dependentC．similarD．dissimilar(69) A．syntaxB．semanticsC．languagesD．format(70) A．analyzeB．pairsC．deleteD．create

4.LANs can be connected by using bridges, which operate in theA．physical layerB．data link layerC．network layerD．transport layer

更多“Networks can be interconnected by different devices.In the physical layer, networks can be connected by（ ） or hubs, which just move the bits from one network to an identical network.”相关问题

  • 第1题：

    Networks can be interconnected by different devices in the physical layer networks can be connected by (71) or hubs．which just move the bits from one network to an identical network．One layer up we find bridges and switches which operate at data link layer．They can accept (72) ，examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process in me network layer，we have routers that can connect two networks，If two networks have (73) network layer，the router may be able to translate betweenthe packer formats．In the transport layer we find transport gateway，which can interface between two transport connections Finally，in the application layer，application gateways translate message (74) ．As an example，gateways between Internet e-mail and X，400 e-mail must (75) thee-mail message and change various header fields．

    (68)

    A．reapers

    B．relays

    C．packages

    D．modems


    正确答案：A

  • 第2题：

    The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?

    A．1 network with 254 hosts

    B．4 networks with 128 hosts

    C．2 networks with 24 hosts

    D．6 networks with 64 hosts

    E．8 networks with 36 hosts


    正确答案：A
    解析：Explanation:Asubnetwith24bitsonwouldbe255.255.255.0.SincethisisaclassCnetwork,thissubnetcanhaveonly1networkand254usablehosts.

  • 第3题：

    Which one of the following characteristics is true regarding the use of hubs and switches?

    A．Hubs can have their ports be configured with VLANs

    B．Using hubs is costly with regard to bandwidth availability.

    C．Switches can not forward broadcasts.

    D．Switches are more efficient than hubs in processing frames.

    E．Switches increase the number of collision domains in the network.


    正确答案：E
    解析：Explanation:Switchesincreasesthenumberofcollisionsdomainsinthenetwork.SwitchesthatareconfiguredwithVLANswillreducethesizeofthecollisiondomainsbyincreasingthenumberofcollisiondomainsinanetwork,butmakingthemsmallerthanthatofonebig,flatnetwork.IncorrectAnswers:A.SwitchesarecapableofVLANconfigurations,buthubsarenot.B.Hubsaregenerallytheleastcostlymethodpossibletoconnectmultipledevicestogetherinanetwork.C.Switchesforwardbroadcastsandmulticasts,bydefault,toallportswithinthesameVLAN.Onlyroutersblockallbroadcasttrafficbydefault.D.Switchesandhubscanbeequallyefficientinprocessingframes,intheory.Inpractice,switchesaregenerallymoreefficientastheyusuallyhavemoreCPUandmemoryallocatedtothem,andaregenerallymuchmoreexpensivethanasimplehub.

  • 第4题：

    ● Networks can be interconnected by different devices. In the physical layer，networks can be connected by（1）or hubs，which just move the bits from one network to an identical network. One layer up we find bridges and switches，which operate at data link layer. They can accept（2）,examine the MAC address，and forward the frames to a different network while doing minor protocol translation in the process. In the network layer，we have routers that can connect two networks. If two networks have（3）network layer， the router may be able to translate between the packet formats. In the transport layer we find transport gateway， which can interface between two transport connections. Finally，in the application layer， application gateways translate message（4）.As an example， gateways between Internet e-mail and X.400 e-mail must （5）the e-mail message and change various header fields.

    （1）

    A.reapers

    B.relays

    C.connectors

    D.modems

    （2）

    A.frames

    B.packets

    C.packages

    D.cells

    （3）

    A.specia l

    B.dependent

    C.similar

    D.dissimilar

    （4）

    A.syntax

    B.semantics

    C.language

    D.format

    （5）

    A.analyze

    B.parse

    C.delete

    D.create


    正确答案：B,A,D,B,B
    网络能通过各种各样的设备进行互连。在物理层，网络是通过中继器或集线器连接起来，主要实现把比特从一个网络传输到另一个同样的网络。在物理层的上面，网桥和交换机工作在数据链路层。它们能够接受帧，检测MAC地址，当在传输过程中采用底层协议时，把这些数据帧传送到一个不同的网络。在网络层，路由器可以连接两个网络。如果两个网络有不相同的网络层，路由器能够实现数据包的格式转换。在传输层，有能实现连接网络传输层的连接网关。最后在应用层，应用网关能转换消息的语义。比如，在E-mail 和 X.400 E-mail之间的网关必须要解析E-mail消息和改变不同的标题域。

  • 第5题：

    What are three advantages of VLANs?（）

    • A、VLANs establish broadcast domains in switched networks.
    • B、VLANs utilize packet filtering to enhance network security.
    • C、VLANs provide a method of conserving IP addresses in large networks.
    • D、VLANs provide a low-latency internet working alternative to routed networks.
    • E、VLANs allow access to network services based on department, not physical location.
    • F、VLANs can greatly simplify adding, moving, or changing hosts on the network.

    正确答案:A,E,F

  • 第6题：

    The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?（）

    • A、1 network with 254 hosts
    • B、4 networks with 128 hosts
    • C、2 networks with 24 hosts
    • D、6 networks with 64 hosts
    • E、8 networks with 36 hosts

    正确答案:A

  • 第7题：

    Which of the following is true regarding the use of switches and hubs for network connectivity（）。

    • A、Switches take less time to process frames than hubs take.
    • B、Switches do not forward broadcasts.
    • C、Hubs can filter frames.
    • D、Using hubs can increase the amount of bandwidth available to hosts.
    • E、Switches increase the number of collision domains in the network.

    正确答案:E

  • 第8题：

    How could a large corporation with many specialized divisions benefit from using VLANs on their networks?（）

    • A、VLANs allow access to network services based on department, not physical location.
    • B、VLANs utilize packet filtering to enhance network security.
    • C、VLANs provide a low-latency, high bandwidth internetworking alternative.
    • D、VLANs provide a method of communication between IP addresses in large networks.
    • E、VLANs establish segmented broadcast domains in switched networks.
    • F、VLANs can greatly simplify adding, moving, or changing hosts on the network.

    正确答案:A,E,F

  • 第9题：

    多选题
    Overlay Transport Virtualization （OTV） join interface is used to source the OTV encapsulated traffic and send it to the Layer 3 domain of the data center network. Which statements are true about OTV join interface？ （）
    A

    Join interface is a Layer 3 entity， and with the Cisco NX-OS release 6.0， it can only be defined as a physical interface， physical subinterface， Layer 3 port channel， or Layer 3 port channel subinterface.

    B

    A single join interface can be defined and associated with a given OTV overlay.

    C

    Multiple overlays can also share the same join interface.

    D

    Join interface can be a loopback interface.

    E

    The join interface is a Layer 3 entity that can be defined as a physical interface but not as a logical one.


    正确答案： D,B
    解析： 暂无解析

  • 第10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（4）处应选择（）
    A

    destination

    B

    resource

    C

    packet

    D

    source


    正确答案： B
    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11题：

    多选题
    What are three advantages of VLANs?（）
    A

    VLANs establish broadcast domains in switched networks.

    B

    VLANs utilize packet filtering to enhance network security.

    C

    VLANs provide a method of conserving IP addresses in large networks.

    D

    VLANs provide a low-latency internet working alternative to routed networks.

    E

    VLANs allow access to network services based on department, not physical location.

    F

    VLANs can greatly simplify adding, moving, or changing hosts on the network.


    正确答案： E,A
    解析： 暂无解析

  • 第12题：

    单选题
    The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?（）
    A

    1 network with 254 hosts

    B

    4 networks with 128 hosts

    C

    2 networks with 24 hosts

    D

    6 networks with 64 hosts

    E

    8 networks with 36 hosts


    正确答案： B
    解析： 暂无解析

  • 第13题：

    Networks can be interconnected by different devices. In the physical layer, networks can be connected by(66)or hubs, which just move the bits from one network to an identical network. One layer up we find bridges and switches, which operate at data link layer. They can accept(67), examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have(68)network layer, the router may be able to translate between the packet formats. In the transport layer we fmd transport gateway, which can interface between two transport connections. Finally, in the application layer, application gateways translate message(69). As an example, gateways between Internet e-mail and X.400 e-mail must(70)the e-mail message and change various header fields.

    A．repeaters

    B．relays

    C．connectors

    D．modems


    正确答案：A
    解析：网络可以用不同的设备互连。在物理层，用中继器或集线器互连，这些设备只是在相同的网络之间传关比特串。在上面的数据链路层，可以使用网桥或交换机，这些设备接收数据帧，检查MAC地址，并可以实现少量的协议转换，把数据帧转发到不同的网络中。在网络层，我们使用路由器连接两个网络。如果两个网络的网络层不同，路由器能够对分组格式进行转换。在传输层，我们使用传输网关，它可以在两个传输连接之间建立接口。最后，在应用层，应用网关实现消息语法之间的翻译。例如，在Internet邮件和X.400邮件之间的网关可以对邮件报文进行语法分析，对报文的各个报头字段做出改变。

  • 第14题：

    Which of the following is used to create multiple networks from one large network?()

    A.PAT

    B.NAT

    C.Multicast

    D.Subnetting


    参考答案：D

  • 第15题：

    Which of the following is true regarding the use of switches and hubs for network connectivity()。

    A.Switches take less time to process frames than hubs take.

    B.Switches do not forward broadcasts.

    C.Hubs can filter frames.

    D.Using hubs can increase the amount of bandwidth available to hosts.

    E.Switches increase the number of collision domains in the network.


    参考答案：E

  • 第16题：

    根据下面的文字资料回答 71～75 题 connected by（ 1 ）or Hubs,which just move the bits from one network to an identical network. One layer up we find bridgas and swiehes,which operate at data link layer. They can accept （ 2 ） , examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer,we have touters that can connect two netwoks. If two networks have（ 3 ）network layer,the router may be able to translate between the packet formats. In the transport layer we find transport gateway, which cart interface between the two transport connections. Finally, in the application layer, application gateways translate message（ 4 ）. As an example,gateways between Internet e-mail and X.400 e-mail must （ 5 ）the e-mail message and change various header fields.

    第6题：文中（ 1 ）处正确的答案是（ ）。

    A．reapers

    B．relays

    C．connects

    D．modems


    正确答案：A

    网络可以用不同的设备互联。在物理层，用中继器或者集线器互联，这些设备只是在相同的网络之间传送比特串。在上面的数据链路层，可以使用网桥或者交换机，这些设备接收数据帧，检查MAC地址，并可以实瑰少量的协议转换，把数据帧转发到不同的网络中。在网络层，使用路由器连接两个网络。如果两个网络的网络层不同，路由器能够对分组格式进行转换。在传输层，使用传输网关，它可以在两个传输连接之间建立接口。最后，在应用层，应用网关实现消息语法之间的翻译。例如，在Internet邮件和X．400邮件之间的网关可以对邮件报文进行语法分析，对报文的各个头字段做出改变。

  • 第17题：

    You are the network administrator at TestKing. TestKing has been provided withthe network address 165.100.27.0/24. The TestKing CEO wants to know how many subnetworks this address provides, and how many hosts can be supported on each subnet. What would your reply be?（）

    • A、One network with 254 hosts.
    • B、254 networks with 254 hosts per network.
    • C、65,534 networks with 255 hosts per network.
    • D、30 networks with 64 hosts per network.
    • E、254 networks with 65,534 per network.

    正确答案:A

  • 第18题：

    Which one of the following characteristics is true regarding the use of hubs and switches?（）

    • A、Hubs can have their ports be configured with VLANs
    • B、Using hubs is costly with regard to bandwidth availability.
    • C、Switches can not forward broadcasts.
    • D、Switches are more efficient than hubs in processing frames.
    • E、Switches increase the number of collision domains in the network.

    正确答案:E

  • 第19题：

    Overlay Transport Virtualization （OTV） join interface is used to source the OTV encapsulated traffic and send it to the Layer 3 domain of the data center network. Which statements are true about OTV join interface？ （）

    • A、 Join interface is a Layer 3 entity， and with the Cisco NX-OS release 6.0， it can only be defined as a physical interface， physical subinterface， Layer 3 port channel， or Layer 3 port channel subinterface.
    • B、 A single join interface can be defined and associated with a given OTV overlay.
    • C、 Multiple overlays can also share the same join interface.
    • D、 Join interface can be a loopback interface.
    • E、 The join interface is a Layer 3 entity that can be defined as a physical interface but not as a logical one.

    正确答案:A,B,C

  • 第20题：

    Which of the following is used to create multiple networks from one large network?（）

    • A、PAT
    • B、NAT
    • C、Multicast
    • D、Subnetting

    正确答案:D

  • 第21题：

    多选题
    How could a large corporation with many specialized divisions benefit from using VLANs on their networks?（）
    A

    VLANs allow access to network services based on department, not physical location.

    B

    VLANs utilize packet filtering to enhance network security.

    C

    VLANs provide a low-latency, high bandwidth internetworking alternative.

    D

    VLANs provide a method of communication between IP addresses in large networks.

    E

    VLANs establish segmented broadcast domains in switched networks.

    F

    VLANs can greatly simplify adding, moving, or changing hosts on the network.


    正确答案： B,D
    解析： 暂无解析

  • 第22题：

    单选题
    Two islands of IPv6 networks that are running ISIS （IPv6 IGP） must be connected using a tunnel over anIPv4 network. Which tunneling method can be used to achieve this goal？（）
    A

    GRE tunnels

    B

    automatic 6 to 4 tunnels

    C

    ISATAP tunnels

    D

    manual tunnels （RFC 2893）


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    Which one of the following characteristics is true regarding the use of hubs and switches?（）
    A

    Hubs can have their ports be configured with VLANs

    B

    Using hubs is costly with regard to bandwidth availability.

    C

    Switches can not forward broadcasts.

    D

    Switches are more efficient than hubs in processing frames.

    E

    Switches increase the number of collision domains in the network.


    正确答案： B
    解析： 暂无解析

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