Which WAN service utilizes two different encapsulation types (one for data and one for signaling) on its data link layer?()A. ISDNB. Frame RelayC. ATMD. FDDI

题目
Which WAN service utilizes two different encapsulation types (one for data and one for signaling) on its data link layer?()

A. ISDN

B. Frame Relay

C. ATM

D. FDDI

相似考题

1.●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

2.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．reapersB．relaysC．packagesD．modems

3.Which of the following is the correct configuration for a RAID 5 array?()A. A two disk set with one data stripB. A three disk set with two data strips and a parity stripC. A two disk set with two data stripsD. A four disk set with two sets of data strips

4.In the open systems interconnection (OSI) reference model, "layer" means one of seven conceptually complete,(71) arranged groups of services, functions, and protocols, that extend across all open systems.Application layer provides means for the application(72) to access the OSI environment. Presentation layer provides for the selection of a common syntax for representing data.(73) layer provides the means necessary for cooperating presentation entities to organize and synchronize their dialog and to manage their data exchange. Transport layer provides a reliable end-to-end data transfer service. Network layer provides for the entities in the transport layer the means for transferring blocks of data, by(74) and switching through the network between the open systems in which those entities reside. Data link layer provides services to transfer data between network layer entities. Physical layer provides the mechanical, electrical, functional, and procedural means to establish, maintain and(75) physical connections for transfer of bits over a transmission medium.A．ranklyB．levellyC．layeredD．hierarchically

参考答案和解析
参考答案：A
更多“Which WAN service utilizes two different encapsulation types (one for data and one for signaling) on its data link layer?() ”相关问题

  • 第1题：

    Which of the following correctly describe steps in the OSI data encapsulation process?()

    A. Transport layer divides a data stream into segments & adds reliability & flow control information

    B. Data link layer adds physical source & destination address & an FCS to the segment

    C. Packets are created when the network layer encapsulate a frame with source & destination host address& protocol related control information

    D. Packets are created when the network layers adds layers 3 address & control information to a segment

    E. The presentation layer translated bits into bits into voltages for transmission across the physical link


    参考答案：A, D

  • 第2题：

    Which one of the WAN data－link protocols below is used for out－of－band signaling?()

    A. HDLC

    B. NCP

    C. PAP

    D. LAPD

    E. LAPB

    F. None of the above


    参考答案：D

  • 第3题：

    An application architecture specifies the technologies to be used to implement one or more information systems. It serves as an outline for detailed design, construction, and implementation. Given the models and details, include （ ）, we can distribute data and processes to create a general design of application architecture. The design will normally be constrained by architecture standards, project objectives, and （ ）. The first physical DFD to be drawn is the （ ）. The next step is to distribute data stores to different processors. Data（ ）are two types of distributed data which most RDBMSs support. There are many distribution options used in data distribution. In the case of（请作答此空）, we should record each table as a data store on the physical DFD and connect each to the appropriate server.

    A.storing all data on a single server
    B.storing specific tables on different servers
    C.storing subsets of specific tables on different servers
    D.duplicating specific tables or subsets on different servers

    答案：B
    解析：
    应用架构说明了实现一个或多个信息系统所使用的技术，它作为详细设计、构造和实现的一个大纲。给定了包括逻辑数据流图和实体联系图在内的模型和详细资料，我们可以分配数据和过程以创建应用架构的一个概要设计。概要设计通常会受到架构标准、项目目标和所使用技术的可行性的制约。需要绘制的第一个物理数据流图是网络架构数据流图。接下来是分配数据存储到不同的处理器。数据分区和复制是大多数关系型数据库支持的两种分布式数据形式。有许多分配方法用于数据分布。在不同服务器上存储特定表的情况下，我们应该将每个表记为物理数据流图中的一个数据存储，并将其连接到相应的服务器。

  • 第4题：

    WAN data link encapsulation types include which of the following?（）

    • A、T1
    • B、Frame Relay
    • C、DSL
    • D、PPP
    • E、ISDN
    • F、IPX

    正确答案:B,D

  • 第5题：

    Which of the following correctly describe steps in the OSI data encapsulation process?（）

    • A、Transport layer divides a data stream into segments & adds reliability & flow control information
    • B、Data link layer adds physical source & destination address & an FCS to the segment
    • C、Packets are created when the network layer encapsulate a frame with source & destination host address& protocol related control information
    • D、Packets are created when the network layers adds layers 3 address & control information to a segment
    • E、The presentation layer translated bits into bits into voltages for transmission across the physical link

    正确答案:A,D

  • 第6题：

    Which of the following is the correct configuration for a RAID 5 array?（）

    • A、A two disk set with one data strip
    • B、A three disk set with two data strips and a parity strip
    • C、A two disk set with two data strips
    • D、A four disk set with two sets of data strips

    正确答案:B

  • 第7题：

    As a frame leaves a Layer 3 device, the Layer 2 encapsulation information is changed from what it was when it entered the devicE.For what two reasons can this happen? （）

    • A、The data is moving from 10BASE-TX to 100BASE-TX.
    • B、The WAN encapsulation type has changed.
    • C、The data format has changed from analog to digital.
    • D、The source and destination hosts are in the same subnet.
    • E、The source and destination MAC addresses have changed.

    正确答案:B,D

  • 第8题：

    Which two statements are true regarding the USING and ON clauses in table joins?（）

    • A、Both USING and ON clauses can be used for equijoins and nonequijoins 
    • B、Amaximum of one pair of columns can be joined between two tables using the ON clause 
    • C、The ON clause can be used to join tables on columns that have different names but compatible data types 
    • D、The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause 

    正确答案:C,D

  • 第9题：

    多选题
    Which of the following correctly describe steps in the OSI data encapsulation process?（）
    A

    Transport layer divides a data stream into segments & adds reliability & flow control information

    B

    Data link layer adds physical source & destination address & an FCS to the segment

    C

    Packets are created when the network layer encapsulate a frame with source & destination host address& protocol related control information

    D

    Packets are created when the network layers adds layers 3 address & control information to a segment

    E

    The presentation layer translated bits into bits into voltages for transmission across the physical link


    正确答案： A,B
    解析： 暂无解析

  • 第10题：

    单选题
    Which one of the WAN data-link protocols below is used for out-of-band signaling?（）
    A

    HDLC

    B

    NCP

    C

    PAP

    D

    LAPD

    E

    LAPB

    F

    None of the above


    正确答案： D
    解析： 暂无解析

  • 第11题：

    多选题
    Which of the following correctly describe steps in the OSI data encapsulation process?（）
    A

    The transport layer divides a data stream into segments and may add reliability and flow control information.

    B

    The data link layer adds physical source and destination addresses and an FCS to the segment.

    C

    Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.

    D

    Packets are created when the network layer adds Layer 3 addresses and control information to a segment.

    E

    The presentation layer translates bits into voltages for transmission across the physical link.


    正确答案： E,B
    解析： 暂无解析

  • 第12题：

    单选题
    Your network contains two data centers named Datacenter1 and Datacenter2. An Active Directory site exists for each data center.  The data centers connect to the Internet by using a direct link.  The data centers connect to each other by using a high-speed WAN link.  You plan to deploy Exchange Server 2010 Mailbox servers in both data centers. You need to plan message routing to meet the following requirements：.Ensure outbound delivery of e-mail messages if a single server fails .Automatically load balance the Hub Transport server in each site .Deploy the minimum number of servers What should you include in the plan？（）
    A

    In each data center， deploy one Hub Transport server. Create and configure one Send connector.

    B

    In each data center， deploy two Hub Transport servers. Create and configure one Send connector.

    C

    In each data center， deploy one Edge Transport server. Create and configure two Send connectors.

    D

    In each data center， deploy two Edge Transport servers. Create and configure two Send connectors.


    正确答案： A
    解析： 暂无解析

  • 第13题：

    WAN data link encapsulation types include which of the following?()

    A. T1

    B. Frame Relay

    C. DSL

    D. PPP

    E. ISDN

    F. IPX


    参考答案：B, D

  • 第14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15题：

    Which two statements are correct about the signaling methods that are utilized for transmitting voice？ （）

    • A、 Channel-associated signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.
    • B、 Channel-associated signaling utilizes a separate TDM channel for transmitting control signals.
    • C、 Common channel signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.
    • D、 Common channel signaling uses one of the TDM channels to transmit control information reducing the number of channels available for voice.
    • E、 ISDN BRIs implement channel-associated signaling.

    正确答案:A,D

  • 第16题：

    Which WAN service utilizes two different encapsulation types (one for data and one for signaling) on its data link layer?（）

    • A、ISDN
    • B、Frame Relay
    • C、ATM
    • D、FDDI

    正确答案:A

  • 第17题：

    Which one of the WAN data-link protocols below is used for out-of-band signaling?（）

    • A、HDLC
    • B、NCP
    • C、PAP
    • D、LAPD
    • E、LAPB
    • F、None of the above

    正确答案:D

  • 第18题：

    Your Service Provider does not support Link Fragmentation and Interleave, but upstream serialization delay on your broadband link is affecting voice quality. Which two mitigation strategies are viable?（）

    • A、Upgrade your residential broadband service to at least 768kbps uplink.
    • B、Switch your home router to use PPP encapsulation.
    • C、Use the ip tcp adjust-mss interface command.
    • D、Employ QoS techniques to drop large data packets.
    • E、Use traffic shaping to interrupt large data packets.

    正确答案:A,C

  • 第19题：

    Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN? （）

    • A、HDLC
    • B、Ethernet
    • C、Token Ring
    • D、PPP
    • E、FDDI
    • F、Frame Relay

    正确答案:A,D,F

  • 第20题：

    Your network contains two data centers named Datacenter1 and Datacenter2. An Active Directory site exists for each data center.  The data centers connect to the Internet by using a direct link.  The data centers connect to each other by using a high-speed WAN link.  You plan to deploy Exchange Server 2010 Mailbox servers in both data centers. You need to plan message routing to meet the following requirements：.Ensure outbound delivery of e-mail messages if a single server fails .Automatically load balance the Hub Transport server in each site .Deploy the minimum number of servers What should you include in the plan？（）

    • A、In each data center， deploy one Hub Transport server. Create and configure one Send connector.
    • B、In each data center， deploy two Hub Transport servers. Create and configure one Send connector.
    • C、In each data center， deploy one Edge Transport server. Create and configure two Send connectors.
    • D、In each data center， deploy two Edge Transport servers. Create and configure two Send connectors.

    正确答案:B

  • 第21题：

    多选题
    WAN data link encapsulation types include which of the following?（）
    A

    T1

    B

    Frame Relay

    C

    DSL

    D

    PPP

    E

    ISDN

    F

    IPX


    正确答案： A,F
    解析： 暂无解析

  • 第22题：

    多选题
    Which two statements are correct about the signaling methods that are utilized for transmitting voice？ （）
    A

    Channel-associated signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.

    B

    Channel-associated signaling utilizes a separate TDM channel for transmitting control signals.

    C

    Common channel signaling transmits control signals in band and therefore reduces the bandwidth available for the voice data stream.

    D

    Common channel signaling uses one of the TDM channels to transmit control information reducing the number of channels available for voice.

    E

    ISDN BRIs implement channel-associated signaling.


    正确答案： A,C
    解析： 暂无解析

  • 第23题：

    多选题
    Which three Layer 2 encapsulation types would be used on a WAN rather than a LAN?（）
    A

    HDLC

    B

    Ethernet

    C

    Token Ring

    D

    PPP

    E

    FDDI

    F

    Frame Relay


    正确答案： A,D,F
    解析： 暂无解析

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