Real—time服务

题目

Real—time服务

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更多“Real—time服务”相关问题

  • 第1题：

    A real-time operating system.（RTOS）is an operating system intended to serve（ ）application process data as it comes in,typically without buffering delays.A key（请作答此空）of a RTOS is the level of its consistency concerning the amount of time it takes to accept and complete an application’s task;the variability is jitter.A hard real-time operating system has（ ）jitter than a soft real-time operating system.The chief design goal is not high throughput,but rather a guarantee of a soft or hard performance category.A RTOS has an advanced algorithm for scheduling.（ ）flexibility enables a wider,computer-system orchestration of process priorities,but a real-time OS is more frequently dedicated to a narrow set of applications.Key factors in a real-time OS are minimal（ ）latency and minimal thread switching latency.

    A.characteristic
    B.programming
    C.structure
    D.computer

    答案：A
    解析：

  • 第2题：

    实时流协议RTSP（Real-Time Streaming Protocol）由Real Networks和Netscape共同提出，是工作在RTP和RTCP之上的（）协议。

    • A、应用层
    • B、表示层
    • C、会话层
    • D、传输层

    正确答案:A

  • 第3题：

    RT-PCR就是real-time PCR。


    正确答案:错误

  • 第4题：

    What are two features of WCS wireless management？ （）

    • A、 centralized management for autonomous access points
    • B、 centralized management for lightweight access points
    • C、 integration with the Location Appliance to expand real time tracking to 1500 devices for 30 days
    • D、 integration with the Location Appliance to expand real time tracking to 2500 devices for 15 days
    • E、 the inclusion of an integrated AAA server
    • F、 an external AAA-server requirement

    正确答案:B,C

  • 第5题：

    What are two features of WLSE-Express wireless management？ （）

    • A、 centralized management for autonomous access points
    • B、 centralized management for lightweight access points
    • C、 centralized management that requires an external AAA server
    • D、 centralized management with integrated AAA server
    • E、 integration with the Location Appliance to expand real time tracking to 1500 devices for 30 days
    • F、 integration with the Location Appliance to expand real time tracking to 2500 devices for 30 days

    正确答案:A,D

  • 第6题：

    Which CLI command displays error statistics for an interface in real-time?（）

    • A、monitor traffic
    • B、show interfaces
    • C、monitor interface
    • D、show interfaces extensive

    正确答案:C

  • 第7题：

    适时驱动（Real－Time）


    正确答案:采用适时驱动（Real－Time）的车辆，其选择何种驱动模式由电脑控制，正常路面一般采用后轮驱动，如果路面不良或驱动轮打滑，电脑会自动测出并立即将发动机输出扭矩分配给其它两轮，切换到4轮驱动状态，操纵简单。其缺点是电脑即时反应较慢，缺少驾驶乐趣。

  • 第8题：

    When configuring QoS on a wireless controller， the per-user， real-time bandwidth contract isenforced for which of the following protocols？（）

    • A、IPX
    • B、IP
    • C、UDP
    • D、TCP

    正确答案:C

  • 第9题：

    Which CLI command displays packet and byte counts for an interface in real-time?（）

    • A、monitor traffic
    • B、show interfaces
    • C、monitor interface
    • D、show traffic counts

    正确答案:C

  • 第10题：

    多选题
    Which two statements are true about the application of QoS in a converged network？（）
    A

    end-to-end network delay times that exceed 50 ms for real-time traffic are considered unacceptable

    B

    end-to-end network delay times that exceed 250 ms for real-time traffic are considered unacceptable

    C

    end-to-end network delay is not a factor as long as the  delay is consistent

    D

    some packet loss can be corrected by codec algorithms

    E

    RSVP handles voice packet retransmission

    F

    fragmentation is a result of packet loss


    正确答案： E,A
    解析： 暂无解析

  • 第11题：

    判断题
    RT-PCR就是real-time PCR。
    A

    对

    B

    错


    正确答案： 对
    解析： 暂无解析

  • 第12题：

    多选题
    The Cisco SDM will create a QoS policy that provides services to two types of traffic. Which two statements indicate the default QoS parameters that are created by SDM？（）
    A

    Business-critical traffic will be sorted into two QoS classes.

    B

    Real-time traffic will be sorted into one QoS class.

    C

    Voice traffic will be considered real-time traffic while call signaling will be considered business-critical.

    D

    All traffic except real-time will be considered best-effort.

    E

    Routing， management， and transactional traffic will be considered business-critical.

    F

    Voice and call signaling traffic will be considered real-time.


    正确答案： A,E
    解析： 暂无解析

  • 第13题：

    A real-time operating system.（RTOS）is an operating system intended to serve（请作答此空）application process data as it comes in,typically without buffering delays.A key（ ）of a RTOS is the level of its consistency concerning the amount of time it takes to accept and complete an application’s task;the variability is jitter.A hard real-time operating system has（ ）jitter than a soft real-time operating system.The chief design goal is not high throughput,but rather a guarantee of a soft or hard performance category.A RTOS has an advanced algorithm for scheduling.（ ）flexibility enables a wider,computer-system orchestration of process priorities,but a real-time OS is more frequently dedicated to a narrow set of applications.Key factors in a real-time OS are minimal（ ）latency and minimal thread switching latency.

    A.normal
    B.real-time
    C.user
    D.kernel

    答案：B
    解析：

  • 第14题：

    Real-time服务


    正确答案: 实时在线服务是一种即时回答用户提问的服务方式，又称实时交互式服务。它通过网络聊天软件、视频会议软件、即时视像软件、网络寻呼软件等方式，由咨询馆员在网上的虚拟社区直接“面对”用户，即时回答用户的咨询。

  • 第15题：

    What are two features of WCS wireless management？（）

    • A、centralized management for autonomous access points
    • B、centralized management for lightweight access points
    • C、integration with the Location Appliance to expand real time tracking to 1500 devices for 30 days
    • D、integration with the Location Appliance to expand real time tracking to 2500 devices for 15 days
    • E、the inclusion of an integrated AAA server F an external AAA-server requirement

    正确答案:B,C

  • 第16题：

    What are two features of WLSE-Express wireless management？（）

    • A、centralized management for autonomous access points 
    • B、centralized management for lightweight access points
    • C、centralized management that requires an external AAA server 
    • D、centralized management with integrated AAA server
    • E、integration with the Location Appliance to expand real time tracking to 1500 devices for 30 days 
    • F、integration with the Location Appliance to expand real time tracking to 2500 devices for 30 days

    正确答案:A,D

  • 第17题：

    The Cisco SDM will create a QoS policy that provides services to two types of traffic. Which two statements indicate the default QoS parameters that are created by SDM？（）

    • A、 Business-critical traffic will be sorted into two QoS classes.
    • B、 Real-time traffic will be sorted into one QoS class.
    • C、 Voice traffic will be considered real-time traffic while call signaling will be considered business-critical.
    • D、 All traffic except real-time will be considered best-effort.
    • E、 Routing， management， and transactional traffic will be considered business-critical.
    • F、 Voice and call signaling traffic will be considered real-time.

    正确答案:E,F

  • 第18题：

    搭建流媒体服务器的方法有：（）服务器和Real Media服务器。

    • A、Winmail
    • B、URL
    • C、Ser v-U
    • D、Real Media

    正确答案:D

  • 第19题：

    Which interface provides the ability to see changes in real-time as they occur ？ （）

    • A、 ConcurrentMap
    • B、 java.util.AbstractMap
    • C、 ObservableMap
    • D、 InvocableMap

    正确答案:C

  • 第20题：

    What are three functions of the Cisco wireless LAN controller，  which is being used in the Company  Centralized WLAN solution network？ （）

    • A、 Authentication  
    • B、 Mobility
    • C、 Security management
    • D、 Transmission of beacon frames
    • E、 Real-time portions of MAC management
    • F、 Real-time aspects of the 802.11 prtocol management
    • G、 SNMP collection

    正确答案:A,B,C

  • 第21题：

    For real time event processing, which three clients can you use?（）

    • A、Java
    • B、C++
    • C、.NET
    • D、REST

    正确答案:A,B,C

  • 第22题：

    名词解释题
    适时驱动（Real－Time）

    正确答案： 采用适时驱动（Real－Time）的车辆，其选择何种驱动模式由电脑控制，正常路面一般采用后轮驱动，如果路面不良或驱动轮打滑，电脑会自动测出并立即将发动机输出扭矩分配给其它两轮，切换到4轮驱动状态，操纵简单。其缺点是电脑即时反应较慢，缺少驾驶乐趣。
    解析： 暂无解析

  • 第23题：

    单选题
    It was a real race ______ time to get the project done. Luckily, we made it.
    A

    over

    B

    by

    C

    for

    D

    against


    正确答案： C
    解析：
    考查介词辨析。句意：为了完成这个项目，我们简直是在和时间赛跑啊。幸运的是，我们做到了。against表示“与……比赛，与……对立”，符合句意。

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