Which benefit does digital subscriber line (DSL) systems for broadband access provide to the user?（）A、Dedicated lines for high security data transferB、Data and audio signals that share the same communications infrastructureC、Secure access to company extra

题目

Which benefit does digital subscriber line (DSL) systems for broadband access provide to the user?（）

  • A、Dedicated lines for high security data transfer
  • B、Data and audio signals that share the same communications infrastructure
  • C、Secure access to company extranet
  • D、Simple solution for high-quality digital video using coaxial cable
相似考题

1.Which of the listed devices may be used as a digital device?A.variable resistorB.diodeC.strain gaugeD.thermistor

2.Which of the following transmits a digital signal?()A. VGAB. XGAC. Component videoD. DisplayPort

3.What does DVI stand for?()A. Dual Visual InterfaceB. Display Vertical InterfaceC. Digital Visual InterfaceD. Digital Vision Interchange

4.When comparing analog display inputs to digital display inputs, which of the following is anadvantage that digital has over analog?()A. Allows for higher brightnessB. More crosstalkC. Sustains higher resolutionsD. Supports widescreen resolutions

更多“Which benefit does digital subsc”相关问题

  • 第1题：

    Without ______ to the foregoing，every such servant，agent and subcontractor shall have the benefit of all provisions contained herein benefiting the carrier as if such provisions were expressly for their benefit； and in entering into this contract，the carrier，to the extent of those provisions does so not only on its own behalf，but also as agent and trustee for such servants，agents and sub-contractors.

    A.damage

    B.injury

    C.break

    D.prejudice


    正确答案：D

  • 第2题：

    Text 3 The power and ambition of the giants of the digital economy is astonishing—Amazon has just announced the purchase of the upmarket grocery chain Whole Foods for$13.5bn，but two years ago Facebook paid even more than that to acquire the WhatsApp messaging service，which doesn’t have any physical product at all.What WhatsApp offered Facebook was an intricate and finely detailed web of its users’friendships and social lives.Facebook promised the European commission then that it would not link phone numbers to Facebook identities，but it broke the promise almost as soon as the deal went through.Even without knowing what was in the messages，the knowledge of who sent them and to whom was enormously revealing and still could be.What political journalist，what party whip，would not want to know the makeup of the WhatsApp groups in which Theresa May’s enemies are currently plotting?It may be that the value of Whole Foods to Amazon is not so much the 460 shops it owns,but the records of which customers have purchased what.Competition law appears to be the only way to address these imbalances of power.But it is clumsy.For one thing,it is very slow compared to the pace of change within the digital economy.By the time a problem has been addressed and remedied it may have vanished in the marketplace,to be replaced by new abuses of power.But there is a deeper conceptual problem,too.Competition law as presently interpreted deals with financial disadvantage to consumers and this is not obvious when the users of these services don’t pay for them.The users of their services are not their customers.That would be the people who buy advertising from them—and Facebook and Google，the two virtual giants，dominate digital advertising to the disadvantage of all other media and entertainment companies.The product they’re selling is data，and we，the users，convert our lives to data for the benefit of the digital giants.Just as some ants farm the bugs called aphids for the honeydew they produce when they feed,so Google farms us for the data that our digital lives yield.Ants keep predatory insects away from where their aphids feed;Gmail keeps the spammers out of our inboxes.It doesn’t feel like a human or democratic relationship，even if both sides benefit.
    The ants analogy is used to illustrate_____

    A.a win-win business model between digital giants
    B.a typical competition pattern among digital giants
    C.the benefits provided for digital giants’customers
    D.the relationship between digital giants and their users

    答案：D
    解析：
    细节题。根据题干的mastering the art of deep work定位到第二段首句。该句指出“有很多种掌握深度工作的方法-不论是专注于指定工作时长时间的后退，或者养成惯例，还是当你一天有闲暇之余采用纪实的方式捕捉深度工作的瞬间”。接着提到“不论是那种方式，关键在于确定你的专注力时间长度并保持专注”。由此可知，D项为正确答案。

  • 第3题：

    Which two statements are true about analog to digital conversion of voice signals for use in digital telephony networks？（）

    • A、The three required steps in the analog to digital conversion are sampling，encoding，and compression.
    • B、The three required steps in the analog to digital conversion are sampling，quantization，and compression.
    • C、The three required steps in the analog to digital conversion are sampling，quantization，and encoding.
    • D、The output of the sampling process is a pulse code modulation （PCM） signal.
    • E、The output of the sampling process is a pulse amplitude modulation （PAM） signal.

    正确答案:C,E

  • 第4题：

    What does DVI stand for?（）

    • A、Dual Visual Interface
    • B、Display Vertical Interface
    • C、Digital Visual Interface
    • D、Digital Vision Interchange

    正确答案:C

  • 第5题：

    Which three are Cisco architectures?（）

    • A、collaboration
    • B、digital media
    • C、borderless networks
    • D、cloud computing
    • E、virtualization
    • F、consumerization

    正确答案:A,C,E

  • 第6题：

    Which benefit does digital subscriber line (DSL) systems for broadband access provide to the user?（）

    • A、Secure access to company extranet
    • B、Dedicated lines for high security data transfer
    • C、Simple solution for high-quality digital video using coaxial cable
    • D、Data and audio signals that share the same communications infrastructure

    正确答案:D

  • 第7题：

    Which of the following is a benefit of NAS over SAN?（）

    • A、Higher data integrity
    • B、Lower cost of implementation
    • C、Higher redundancy
    • D、Increased performance

    正确答案:B

  • 第8题：

    When comparing analog display inputs to digital display inputs, which of the following is anadvantage that digital has over analog?（）

    • A、Allows for higher brightness
    • B、More crosstalk
    • C、Sustains higher resolutions
    • D、Supports widescreen resolutions

    正确答案:C

  • 第9题：

    Which technology/feature is designed to maximize the benefit of using SSD drives? （）

    • A、Easy Tier
    • B、FlashCopy
    • C、Encryption
    • D、Metro Mirror

    正确答案:A

  • 第10题：

    单选题
    Birthday attacks are used against which of the following？（）
    A

     digital signatures

    B

     symmetric ciphering

    C

     hashalgoritms

    D

     asymmetric ciphering

    E

     digital certificates


    正确答案： B
    解析： 暂无解析

  • 第11题：

    多选题
    Which two statements are true about analog to digital conversion of voice signals for use in digital telephony networks？（）
    A

    The three required steps in the analog to digital conversion are sampling，encoding，and compression.

    B

    The three required steps in the analog to digital conversion are sampling，quantization，and compression.

    C

    The three required steps in the analog to digital conversion are sampling，quantization，and encoding.

    D

    The output of the sampling process is a pulse code modulation （PCM） signal.

    E

    The output of the sampling process is a pulse amplitude modulation （PAM） signal.


    正确答案： B,E
    解析： 暂无解析

  • 第12题：

    单选题
    Which algorithm was the first to be found suitable for both digital signing and encryption？（）
    A

    HMAC

    B

    RSA

    C

    MD5

    D

    SHA-1


    正确答案： A
    解析： 暂无解析

  • 第13题：

    What does Savvy Shoppers send to clients when shopping?

    A. Prices and photographs of clothing items

    B. Precise measurements and digital photos

    C. Gift certificates for tailoring services

    D. Information about the work they do

    答案：A
    解析：

  • 第14题：

    Text 3 The power and ambition of the giants of the digital economy is astonishing—Amazon has just announced the purchase of the upmarket grocery chain Whole Foods for$13.5bn，but two years ago Facebook paid even more than that to acquire the WhatsApp messaging service，which doesn’t have any physical product at all.What WhatsApp offered Facebook was an intricate and finely detailed web of its users’friendships and social lives.Facebook promised the European commission then that it would not link phone numbers to Facebook identities，but it broke the promise almost as soon as the deal went through.Even without knowing what was in the messages，the knowledge of who sent them and to whom was enormously revealing and still could be.What political journalist，what party whip，would not want to know the makeup of the WhatsApp groups in which Theresa May’s enemies are currently plotting?It may be that the value of Whole Foods to Amazon is not so much the 460 shops it owns,but the records of which customers have purchased what.Competition law appears to be the only way to address these imbalances of power.But it is clumsy.For one thing,it is very slow compared to the pace of change within the digital economy.By the time a problem has been addressed and remedied it may have vanished in the marketplace,to be replaced by new abuses of power.But there is a deeper conceptual problem,too.Competition law as presently interpreted deals with financial disadvantage to consumers and this is not obvious when the users of these services don’t pay for them.The users of their services are not their customers.That would be the people who buy advertising from them—and Facebook and Google，the two virtual giants，dominate digital advertising to the disadvantage of all other media and entertainment companies.The product they’re selling is data，and we，the users，convert our lives to data for the benefit of the digital giants.Just as some ants farm the bugs called aphids for the honeydew they produce when they feed,so Google farms us for the data that our digital lives yield.Ants keep predatory insects away from where their aphids feed;Gmail keeps the spammers out of our inboxes.It doesn’t feel like a human or democratic relationship，even if both sides benefit.
    According to Paragraph 1,Facebook acquired WhatsApp for its_____

    A.digital products
    B.user information
    C.physical assets
    D.quality service

    答案：B
    解析：
    细节题。根据题干信息定位到第一段第二句。该句提到两年前Facebook花了更多的钱获得了WhatsApp的信息服务。接着提到WhatsApp提供给Facebook的是关于其用户的朋友圈以及社会生活等具体精炼的信息。由此可知，B项为正确答案。

  • 第15题：

    Which of the following describes the roles of devices in a WAN?（）

    • A、A CSU/DSU terminates a digital local loop
    • B、A modem terminates a digital local loop
    • C、A CSU/DSU terminates an analog local loop
    • D、A modem terminates an analog local loop
    • E、A router is commonly consideredaDTEdevice
    • F、A router is commonly considereda DCE device

    正确答案:A,D,E

  • 第16题：

    Which algorithm was the first to be found suitable for both digital signing and encryption？（）

    • A、HMAC
    • B、RSA
    • C、MD5
    • D、SHA-1

    正确答案:B

  • 第17题：

    Which statement is true about the digital to analog conversion process？（）

    • A、the two steps of digital to analog conversion are decompression and reconstruction of the analog signal
    • B、the two steps of digital to analog conversion are decoding and filtering
    • C、the two steps of digital to analog conversion are decompression and filtering of the analog signal
    • D、the two steps of digital to analog conversion are quantization and decoding

    正确答案:B

  • 第18题：

    Birthday attacks are used against which of the following？（）

    • A、 digital signatures
    • B、 symmetric ciphering
    • C、 hashalgoritms
    • D、 asymmetric ciphering
    • E、 digital certificates

    正确答案:C

  • 第19题：

    Which test checks the transmitter and receiver of a local modem？（）

    • A、data parity
    • B、analog loop back
    • C、local digital loop back
    • D、remote digital loop back

    正确答案:B

  • 第20题：

    Which of the following transmits a digital signal?（）

    • A、VGA
    • B、XGA
    • C、Component video
    • D、DisplayPort

    正确答案:D

  • 第21题：

    单选题
    Which of the following BEST describes a benefit of RAID 0?（）
    A

    High fault tolerance

    B

    Ease of failure recovery

    C

    High performance

    D

    No configuration


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    Which statement is true about the digital to analog conversion process？（）
    A

    the two steps of digital to analog conversion are decompression and reconstruction of the analog signal

    B

    the two steps of digital to analog conversion are decoding and filtering

    C

    the two steps of digital to analog conversion are decompression and filtering of the analog signal

    D

    the two steps of digital to analog conversion are quantization and decoding


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    Popular magazines are not appropriate in school libraries, because it is not benefiting students educationally.
    A

    it is not benefiting students

    B

    it does not benefit students

    C

    they are not benefiting students

    D

    they do not benefit students

    E

    they are not providing students benefits


    正确答案： C
    解析：
    主语通俗杂志为复数，因此句子后半部分代词应为they,而不是its。C中的短语are not benefiting 不是固定用法且时态不正确。因为这句话表达的是通俗杂志的总体特征，因此用一般现在式。

  • 第24题：

    多选题
    Which two statements are true about the digital audio in a VoIP network？ （）
    A

    Standard encoding techniques create an uncompressed digital data rate of 4000 bps.

    B

    Standard encoding techniques create an uncompressed digital data rate of 8000 bps.

    C

    Standard encoding techniques create an uncompressed digital data rate of 64，000 bps.

    D

    Voice quality is not a concern if compression is not used.

    E

    Two methods of quantization are linear and logarithmic.

    F

    Two methods of compression are u-law and a-law.


    正确答案： A,F
    解析： 暂无解析

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