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更多“单选题An alternative to plain old telephone service (POTS) would be:()A X.25.B Asynchronous transfer mode (ATM).C VoIP.D Public Switched Telephone Network (PSTN).”相关问题
  • 第1题:

    Circuit-switching technology is used in Publish Switched Telephone Network(PSTN), Global System for Mobile Communications(GSM) and code Division Multiple Access (CMDA) .It is a ( ) information transfer mode.

    A.connection oriented

    B.connectionless

    C.high bandwidth utilization

    D.poor real-time


    正确答案:D

  • 第2题:

    ATM (Asynchronous Transfer Mode) technology combines connection oriented mechanism and ( ) mechanism.

    A.circuit switching
    B.packet switching
    C.message switching
    D.voice switching

    答案:B
    解析:
    ATM(异步传输模式)技术结合了面向连接机制和分组交换机制。

  • 第3题:

    ATM称为异步转移模式,(Asynchronous Transfer Mode)是一种快速分组交换的传输方式。


    正确答案:正确

  • 第4题:

    Which statements is true about Foreign Exchange Station (FXS) ports on a router?()

    • A、the FXS interface allows an analog connection to be directed at the public switched telephone network (PSTN’s) central office
    • B、the FXS interface connect directly to a standard telephone, fax machine, or sililar device and supplies ring, voltage, and dial tone
    • C、the FXS interface connect directly to an IP phone and supplies ring, voltage, and dial tone
    • D、the FXS interface connect directly to ISDN voice channels

    正确答案:B

  • 第5题:

    An alternative to plain old telephone service (POTS) would be:()

    • A、X.25.
    • B、Asynchronous transfer mode (ATM).
    • C、VoIP.
    • D、Public Switched Telephone Network (PSTN).

    正确答案:C

  • 第6题:

    PSTN的中文全程是()最早的主要是提供电话业务。英文全程是Public Switch Telephone Network。


    正确答案:公用电话交换网

  • 第7题:

    Which statement is true about Foreign Exchange Station (FXS) ports on a router?()

    • A、The FXS interface allows an analog connection to be directed at the public switched telephone network (PSTN’s) central office.
    • B、The FXS interface connects directly to a standard telephone,fax machine,or similar device and supplies ring,voltage,and dial tone.
    • C、The FXS interface connects directly to an IP phone and supplies ring,voltage,and dial tone.
    • D、The FXS interface connects directly to ISDN voice channels.

    正确答案:B

  • 第8题:

    What best describes an FXO interface?()

    • A、analog trunks that provide the Survivable Remote Site Telephony (SRST) feature 
    • B、analog trunks that provide VoIP gateway functionality 
    • C、analog trunks that connect a gateway to plain old telephone service (POTS) device such as analog phones, fax machines, and legacy voice-mail systems  
    • D、analog trunks that connect a gateway to a central office (CO) or private branch exchange (PBX)

    正确答案:D

  • 第9题:

    单选题
    What best describes an FXO interface?()
    A

    analog trunks that provide the Survivable Remote Site Telephony (SRST) feature 

    B

    analog trunks that provide VoIP gateway functionality 

    C

    analog trunks that connect a gateway to plain old telephone service (POTS) device such as analog phones, fax machines, and legacy voice-mail systems  

    D

    analog trunks that connect a gateway to a central office (CO) or private branch exchange (PBX)


    正确答案: B
    解析: 暂无解析

  • 第10题:

    单选题
    公众电话交换网(PSTN,PuBlic SwitcheD Telephone Network)是承载话音业务的基础网络,其采用的技术是()。
    A

    话音交换技术

    B

    数据交换技术

    C

    集中交换技术

    D

    电路交换技术


    正确答案: B
    解析: 暂无解析

  • 第11题:

    单选题
    What type of services are provided by the Cisco IOS gateways in a VoIP network with Cisco CallManger functionality?()
    A

    Cisco IOS gateways provide services such as address translation and network access control for the devices on the network

    B

    Cisco IOS gateways provide services such as bandwidth management and accounting

    C

    Cisco IOS gateways provide media termination and signal translation between the public switched telephone network (PSTN) and IP networks

    D

    Cisco IOS gateways provide zone management for all registered endpoints in the network


    正确答案: C
    解析: 暂无解析

  • 第12题:

    单选题
    An alternative to plain old telephone service (POTS) would be:()
    A

    X.25.

    B

    Asynchronous transfer mode (ATM).

    C

    VoIP.

    D

    Public Switched Telephone Network (PSTN).


    正确答案: B
    解析: 暂无解析

  • 第13题:

    Circuit-switching technology is used in Public Switched Telephone Network(PSTN), Global System for Mobile Communications(GSM) and Code Division Multiple Access(CDMA). It is a ( ) information transfer mode.

    A.Connection oriented
    B.connectionless
    C.High bandwidth utilization
    D.Poor-real-time

    答案:A
    解析:
    电路交换技术用于PSTN、GSM和CDMA,它是一种(72)信息传输模式。

  • 第14题:

    异步转移模式,ATM(Asynchronous Transfer Mode)是一种快速分组交换的传输方式。


    正确答案:正确

  • 第15题:

    What type of services are provided by the Cisco IOS gateways in a VoIP network with Cisco CallManager functionality? ()

    • A、Cisco IOS gateways provide services such as address translation and network access control for the devices on the networl
    • B、Cisco IOS gateways provide services such as bandwidth management and accounting
    • C、Cisco IOS gateways provide media termination and signal translation between the public switched telephone network (PSTN) and IP networks
    • D、Cisco IOS gateways provide zone management for all registered endpoints in the network

    正确答案:C

  • 第16题:

    Circuit-switching technology is used in Publish Switched Telephone Network(PSTN), Global System for Mobile Communications(GSM) and code Division Multiple Access (CMDA) . It is a ( ) information transfer mode.

    • A、connection oriented
    • B、connectionless
    • C、high bandwidth utilization
    • D、poor real-time

    正确答案:D

  • 第17题:

    简述异步传输模式(asynchronous transfer mode,ATM)的特点。


    正确答案: ATM具有以下几个特点:
    (1) 灵活性。
    (2) 高速率。
    (3) 多业务。
    (4) 可靠性。
    (5) 安全性。

  • 第18题:

    公众电话交换网(PSTN,PuBlic SwitcheD Telephone Network)是承载话音业务的基础网络,其采用的技术是()。

    • A、话音交换技术
    • B、数据交换技术
    • C、集中交换技术
    • D、电路交换技术

    正确答案:D

  • 第19题:

    In which three network technologies is traffic shaping used to prevent and manage congestion? ()

    • A、Asynchronous Transfer Mode (ATM)
    • B、data-link switching (DLSw)
    • C、Route Processor Redundancy (RPR)
    • D、Frame Relay (FR)
    • E、Metro Ethernet
    • F、Multiprotocol Label Switching (MPLS)

    正确答案:A,D,E

  • 第20题:

    单选题
    Which statements is true about Foreign Exchange Station (FXS) ports on a router?()
    A

    the FXS interface allows an analog connection to be directed at the public switched telephone network (PSTN’s) central office

    B

    the FXS interface connect directly to a standard telephone, fax machine, or sililar device and supplies ring, voltage, and dial tone

    C

    the FXS interface connect directly to an IP phone and supplies ring, voltage, and dial tone

    D

    the FXS interface connect directly to ISDN voice channels


    正确答案: D
    解析: 暂无解析

  • 第21题:

    单选题
    Which statement is true about Foreign Exchange Station (FXS) ports on a router?()
    A

    The FXS interface allows an analog connection to be directed at the public switched telephone network (PSTN’s) central office.

    B

    The FXS interface connects directly to a standard telephone,fax machine,or similar device and supplies ring,voltage,and dial tone.

    C

    The FXS interface connects directly to an IP phone and supplies ring,voltage,and dial tone.

    D

    The FXS interface connects directly to ISDN voice channels.


    正确答案: D
    解析: 暂无解析

  • 第22题:

    问答题
    简述异步传输模式(asynchronous transfer mode,ATM)的特点。

    正确答案: ATM具有以下几个特点:
    (1) 灵活性。
    (2) 高速率。
    (3) 多业务。
    (4) 可靠性。
    (5) 安全性。
    解析: 暂无解析

  • 第23题:

    单选题
    Circuit-switching technology is used in Publish Switched Telephone Network(PSTN), Global System for Mobile Communications(GSM) and code Division Multiple Access (CMDA) . It is a ( ) information transfer mode.
    A

    connection oriented

    B

    connectionless

    C

    high bandwidth utilization

    D

    poor real-time


    正确答案: D
    解析: 暂无解析

  • 第24题:

    填空题
    PSTN的中文全程是()最早的主要是提供电话业务。英文全程是Public Switch Telephone Network。

    正确答案: 公用电话交换网
    解析: 暂无解析