For data transmission to be successful，sending and receiving devices must follow a set of communication rules for the exchange of information. These rules are known as（ ）.A.E-mail B.Intemet C.network D.protocols

题目

For data transmission to be successful，sending and receiving devices must follow a set of communication rules for the exchange of information. These rules are known as（ ）.

A.E-mail B.Intemet C.network D.protocols

相似考题

1.●Flow control is a function that prevents network congestion by ensuring that (71) do not overwhelm (72) with datA．There are three commonly used methods for handling network congestion ． (73) is used by network devices to temporarily store bursts of excess data in memory until they can be processed． (74) are used by receiving devices to help prevent their buffers from overflowing ． (75) is a flow-control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted．(71)~(72)A．transmitting devicesB．transmitted devicesC．receiving devicesD．received devices(73)~(75) A．BufferB．Source-quench messagesC．BufferingD．Windowing

2.You are managing an Oracle Database 11g database. You want to take a backup on tape drives of the USERS tablespace that has a single data file of 900 MB. You have tape drives of 300 MB each. To accomplish the backup, you issued the following RMAN command:RMAN> BACKUPSECTION SIZE 300M TABLESPACE users;Identify the appropriate configuration to accomplish faster and optimized backups using the above command.（）A. The SBT channel must be configured, with the MAXPIECESIZE set to 300 mb.B. The SBT channel must be configured, with the parallelism setting for the SBT devices set to 3.C. The COMPATIBLE initialization parameter for the database instance must be set to at least 10.0.D. The SBT channel must be configured, with the default parallelism setting for the SBT devices set to 1

3.In data communication, data link is those parts of two data terminal equipments that are controlled by a protocol along with the(71) data circuit, which together enable data(72). So-called protocol means, in short, a set of rules that determines the behavior. of functional units in achieving communication.Data circuit, however, consists of a pair of(73) transmission channels that provides a means of two-way data transmission. Between data switching exchanges, the data circuit may or may not include data circuit-terminating equipment (DCE), depending on the type of(74) used at the data switching exchange. Between a data station and a data switching exchange or data concentrator, the data circuit includes the DCE at the data station end, and may include equipment(75) to a DCE at the data switching exchange or dam concentrator location.A．handshakingB．interconnectingC．linkageD．joining

4.Flow control is a function that prevents network congestion by ensuring that _（ ）_ do not overwhelm_（ ）_ with data．There are three commonly used methods for handling network congestion．_（ ）_is used by network devices to temporarily store bursts of excess data in memory until they can be processed．_（ ）_ are used by receiving devices to help prevent their buffers from overflowing．_（ ）_ is a flow－control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted．A.transmitting devicesB.transmitted devicesC.receiving devicesD.received devices@@@SXB@@@A.transmitting devicesB.transmitted devicesC.receiving devicesD.received devices@@@SXB@@@A.BufferB.Source－quench messagesC.windowD.WindowingE.Buffering@@@SXB@@@A.BufferB.Source－quench messagesC.windowD.WindowingE.Buffering@@@SXB@@@A.BufferB.Source－quench messagesC.windowD.WindowingE.Buffering

更多“For data transmission to be successful,sending and receiving devices must follow a set of ”相关问题

  • 第1题：

    Referring to the exhibit, what is the purpose of the targets section of the configuration?()

    A. It defines which devices will be sending traps.

    B. It specifies where to send traps.

    C. It defines the IP addresses of management systems that can access the device.

    D. It specifies which devices can be polled for SNMP data.


    参考答案：B

  • 第2题：

    With regard to Ethernet media access methods, which of the following are true?

    (Choose all that apply.)

    A．A device waits for an electronic signal before transmitting.

    B．A device listens and waits until the media is not busy before transmitting.

    C．All devices on an Ethernet segment see data that passes on the network medium.

    D．Only the sender and the receiver devices see data that passes on the network medium.

    E．Ethernet networks allow you to configured devises with higher transmission priority.


    正确答案：BC
    解析：Explanation:
    Ethernet uses the CSMA/CD access method.
    CSMA/CD logic helps prevent collisions and also defines how to act when a collision does occur. The CSMA/CD algorithm words like this:
    1. A device with a frame. to send listens until the Ethernet is not busy.
    2. When the Ethernet is not busy, the sender begins sending the frame.
    3. The sender listens to make sure that no collision occurred.
    4. Once the senders hear the collision, they each send a jamming signal, to ensure that all stations recognize the collision.
    5. After the jamming is complete, each sender randomizes a timer and waits that long.
    6 When each timer expires, the process starts over with Step 1.
    So, all devices on the Ethernet need to use CSMA/CD to avoid collisions and to recover when inadvertent collisions occur.

  • 第3题：

    IP multicasting is a set of technologies that enable efficient delivery of data to many locations

    on a network. Rather than making multiple copies of a message intended to be distributed

    to multiple recipients at the __(71)__ of origin of a message, multicasting initially sends just

    one __(72)__ and does not copy it to the individual recipients until it reaches the closest common point

    on the network, thereby __(73)__ the bandwidth consumed. Network performance is significantly

    (74) because it isn’t bogged down with the processing and transmission of several large data files;

    each receiving computer doesn’t have to __(75)__ the transmitting server for the file.

    (71)

    A. point

    B. bottom

    C. head

    D. sight


    正确答案：A
    IP多播是允许同时给网络上很多主机提供数据的一种技术。它每次复制很多副本去发送给每一个在这个IP多播组中的接收者，多播最初只发送单一信息而且并没有立即复制去发给每个接受者，而是直到到达网络中最近的一个共通点时才开始复制，从而最大限度地减少了对带宽的消耗。网络的性能明显得到改善，一是因为它没有立即处理和传输几个大型数据文件；二是接收段计算机不需要查询该传输服务的文件。

  • 第4题：

    IP multicasting is a set of technologies that enable efficient delivery of data to many locations on a network. Rather than making multiple copies of a message intended to be distributed to multiple recipients at the(71) of origin of a message, multicasting initially sends just one(72) and does not copy it to the individual recipients until it reaches the closest common point on the network, thereby(73) the bandwidth consumed. Network performance is significantly(74) because it isn't bogged down with the processing and transmission of several large data fries; each receiving computer doesn't have to(75) the transmitting server for the file.

    A．point

    B．bottom

    C．head

    D．sight


    正确答案：A

  • 第5题：

    ●A (74)is aformal set ofrules for specifying the format and relationship when exchanging data among communicating devices.

    (74)

    A. protocol

    B.language

    C.program

    D.command


    正确答案：A

  • 第6题：

    IP multicasting is a set of technologies that enable efficient delivery of data to many locations on a network. Rather than making multiple copies of a message intended to be distributed to multiple recipients at the （） of origin of a message, multicasting initially sends just one （） and does not copy it to the individual recipients until it reaches the closest common point on the network, thereby （） the bandwidth consumed. Network performance is significantly （） because it isn’t bogged down with the processing and transmission of several large data files; each receiving computer doesn’t have to （） the transmitting server for the file.

    A.loop
    B.find
    C.search
    D.query

    答案：D
    解析：
    参考译文：IP多播是允许同时给网络上很多主机提供数据的一种技术。它并不是每次复制很多副本去发送给每一个在这个IP多播组中的接收者，而是最初只发送单一信息，并没有立即复制信息去发给每个接收者，而是直到到达网络中最近的一个共通点时才开始复制，从而最大限度地减少了对带宽的消耗。网络的性能明显得到改善，一是因为它没有立即处理和传输几个大型数据文件；二是接收端计算机不需要查询该传输服务的文件。

  • 第7题：

    When assigning a standalone access point a non-root role， which two parameters， other than Role in theradio network settings，must be configured on the SSID Manager page？（）

    • A、Set Data Beacon Rate
    • B、Set Infrastructure SSID
    • C、Enable IP redirection on this SSID
    • D、Multiple BSSID
    • E、Force Infrastructure Devices to associate only to this SSID

    正确答案:B,E

  • 第8题：

    When setting an access point to a non-root role， what two parameters，other than Role in theRadio Network，must be configured on the SSID Manager page？（）

    • A、Infrastructure devices to associate only to this SSID
    • B、Enable IP redirection on this SSID
    • C、Set Data Beacon Rate
    • D、Multiple Basic Service Set Identification （BSSID）
    • E、Set infrastructure SSID

    正确答案:A,E

  • 第9题：

    单选题
    If a GMDSS radio operator initiates a DSC distress transmission but does not insert a message，what happens? （）
    A

    The transmission is aborted and an alarm sounds to indicate this data must be provided by the operator

    B

    The transmission is not initiated and ERROR is indicated on the display readout

    C

    The transmission will be made with default information provided automatically

    D

    The receiving station will poll the DSC unit of the vessel in distress to download the necessary information


    正确答案： A
    解析： 暂无解析

  • 第10题：

    多选题
    When setting an access point to a non-root role，what two parameters，other than role in the radio network， must be configured on the ssid manager page？（）
    A

    infrastructure devices to associate only to this ssid

    B

    enable ip redirection on this ssid

    C

    set data beacon rate

    D

    multiple basic service set identification （bssid）

    E

    set infrastructure ssid


    正确答案： C,B
    解析： 暂无解析

  • 第11题：

    单选题
    Referring to the exhibit, what is the purpose of the targets section of the configuration?（）
    A

    It defines which devices will be sending traps.

    B

    It specifies where to send traps.

    C

    It defines the IP addresses of management systems that can access the device.

    D

    It specifies which devices can be polled for SNMP data.


    正确答案： D
    解析： 暂无解析

  • 第12题：

    问答题
    Practice 2　　(1) In order to communicate thoughts and feelings, there must be a conventional system of signs or symbols which mean the same to the sender and the receiver. The means of sending communications are too numerous and varied for systematic classification. Therefore, the analysis must begin with the means of receiving communication. (2) Reception of communication is achieved by our senses.

    正确答案：
    (1) 为了交流思想和情感,必须有一个对发送者和接受者有着相同含义传统的符号或象征系统。
    (2) 人们用感官知觉来接受人际交流。
    解析： 暂无解析

  • 第13题：

    By default, which IS－IS metric types does JUNOS software support?()

    A. receiving of wide metrics only

    B. sending of narrow metrics only

    C. receiving of narrow metrics only

    D. sending and receiving of narrow and wide metrics


    参考答案：D

  • 第14题：

    Flow control is a function that prevents network congestion by ensuring that(71)do not overwhelm(72)with data. There are three commonly used methods for handling network congestion.(73)is used by network devices to temporarily store bursts of excess data in memory until they can be processed. (74)are used by receiving devices to help prevent their buffers from overflowing.(75)is a flow -control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted.

    A．transmitting devices

    B．transmitted devices

    C．receiving devices

    D．received devices


    正确答案：A

  • 第15题：

    Flow control is a function that prevents network congestion by ensuring that(66)do not over-whelm(67)with data. There are three commonly used methods for handling network congestion.(68)is used by network devices to temporarily store bursts of excess data in memory until they can be processed.(69)are used by receiving devices to help prevent their buffers from overflowing.(70)is a flow-control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted.

    A．transmitting devices

    B．transmitted devices

    C．receiving devices

    D．received devices


    正确答案：A

  • 第16题：

    A host is attempting to send data to another host on a different network. What is the first action that the sending host will take?()

    A. Drop the data.

    B. Send the data frames to the default gateway.

    C. Create an ARP request to get a MAC address for the receiving host.

    D. Send a TCP SYN and wait for the SYN ACK with the IP address of the receiving host.


    参考答案：C

  • 第17题：

    For data transmission to be successful，sending and receiving devices must follow a set of communication rules for the exchange of information. These rules are known as ( ).

    A.E-mail
    B.Internet
    C.network
    D.protocols

    答案：D
    解析：
    为成功地传输数据，发送设备和接收设备必须遵循一套信息交换的通信规则。这些规则称为协议。

  • 第18题：

    Why is QoS important in a converged network?（）

    • A、Because data does not need to arrive intact, so data transfer rates can be variable
    • B、Because lost voice-data packets must be retransmitted
    • C、Because voice data packets should arrive quickly and sequentially, and with no lost data
    • D、Because voice data packets must follow a single dedicated path through the network

    正确答案:C

  • 第19题：

    With regard to Ethernet media access methods, which of the following are true?（）

    • A、A device waits for an electronic signal before transmitting.
    • B、A device listens and waits until the media is not busy before transmitting.
    • C、All devices on an Ethernet segment see data that passes on the network medium.
    • D、Only the sender and the receiver devices see data that passes on the network medium.
    • E、Ethernet networks allow you to configured devises with higher transmission priority.

    正确答案:B,C

  • 第20题：

    By default, which IS-IS metric types does JUNOS software support?（）

    • A、receiving of wide metrics only
    • B、sending of narrow metrics only
    • C、receiving of narrow metrics only
    • D、sending and receiving of narrow and wide metrics

    正确答案:D

  • 第21题：

    单选题
    You are managing an Oracle Database 11g database. You want to take a backup on tape drives of the USERS tablespace that has a single data file of 900 MB. You have tape drives of 300 MB each. To accomplish the backup, you issued the following RMAN command: RMAN> BACKUP SECTION SIZE 300M TABLESPACE users; Identify the appropriate configuration to accomplish faster and optimized backups using the above command.（）
    A

    The SBT channel must be configured, with the MAXPIECESIZE set to 300 mb.

    B

    The SBT channel must be configured, with the parallelism setting for the SBT devices set to 3.

    C

    The COMPATIBLE initialization parameter for the database instance must be set to at least 10.0.

    D

    The SBT channel must be configured, with the default parallelism setting for the SBT devices set to 1


    正确答案： C
    解析： 暂无解析

  • 第22题：

    单选题
    A host is attempting to send data to another host on a different network. What is the first action that the sending host will take?（）
    A

    Drop the data.

    B

    Send the data frames to the default gateway.

    C

    Create an ARP request to get a MAC address for the receiving host.

    D

    Send a TCP SYN and wait for the SYN ACK with the IP address of the receiving host.


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    You work as the enterprise exchange administrator at Xxx .Xxx is using Microsoft Exchange Server 2010 as their messaging solution.What actions must you take to disable notifications by text messages to mobile devices？（）
    A

    You must set up a Group Policy Object.

    B

    You must set up an Outlook Web App Mailbox policy.

    C

    You must change the properties of the public folder database.

    D

    You must set up recipient filtering.


    正确答案： D
    解析： 暂无解析

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