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Real-time服务
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考题
Explain the different real-time approaches and how they can be applied in different business scenarios.简述几种不同的实时ETL实现方法以及它们的适用范围。
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Which of the following would require real-time processing?（ ）A．Playing a computer gameB．Executing a program that predicts the state of economyC．Printing labelsD．Listening the music
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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
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Which two statements about the QoS policy generation phase of the Cisco SDM QoS wizard are true？ （）A、 The SDM QoS wizard will create two real-time traffic classes to handle VoIP and voice signaling packets.B、 The SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， and video packets.C、 The SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packets.D、 The SDM QoS wizard will create two business-critical traffic classes to handle transactional and network management packets.E、 The SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packets.F、 The SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packets.
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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.
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Which sar option generates real-time disk I/O statistics?（）A、 sar -q B、 sar -P C、 sar -d D、 sar -D
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Which CLI command displays error statistics for an interface in real-time?（）A、monitor trafficB、show interfacesC、monitor interfaceD、show interfaces extensive
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What is an important difference between the Cisco Small Business Support Center and the Cisco Small Business Support Community？（）A、 telephone support during business hoursB、 fast access to technical informationC、 access by partners and customersD、 real-time collaboration
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Which interface provides the ability to see changes in real-time as they occur ？ （）A、 ConcurrentMapB、 java.util.AbstractMapC、 ObservableMapD、 InvocableMap
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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 unacceptableB、end-to-end network delay times that exceed 250 ms for real-time traffic are considered unacceptableC、end-to-end network delay is not a factor as long as the delay is consistentD、some packet loss can be corrected by codec algorithmsE、RSVP handles voice packet retransmissionF、fragmentation is a result of packet loss
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When configuring QoS on a wireless controller， the per-user， real-time bandwidth contract isenforced for which of the following protocols？（）A、IPXB、IPC、UDPD、TCP
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Which two statements about the QoS policy generation phase of the Cisco SDM QoS wizard are true？（）A、the SDM QoS wizard will create two real-time traffic classes to handle VoIP， voice signaling， and video packetsB、the SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， video， and video packetsC、the SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packetsD、the SDM QoS wizard will create two business-critical traffic classes to handle transactional and network management packetsE、the SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packetsF、the SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packets
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Which QoS mechanism can help classify different kinds of Citrix traffic print job versus real-time terminalcontrol？（）A、qos-groupB、DSCPC、LFID、NBAR
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What are three functions of the Cisco wireless LAN controller， which is being used in the Company Centralized WLAN solution network？ （）A、 Authentication B、 MobilityC、 Security managementD、 Transmission of beacon framesE、 Real-time portions of MAC managementF、 Real-time aspects of the 802.11 prtocol managementG、 SNMP collection
考题
A technician at a company providing online, real-time media streaming to the Internet needs a network technology that will reduce bandwidth while delivering high throughput. Which of the following can the technician implement to fit these requirements?（）A、SubnettingB、UnicastC、BroadcastD、Multicast
考题
Which of the following features would BEST be used to optimize real-time voice and video chat?（）(Select TWO)A、Load balancingB、Caching enginesC、QosD、Fault tolerance systemsE、Traffic shaping
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Which CLI command displays packet and byte counts for an interface in real-time?（）A、monitor trafficB、show interfacesC、monitor interfaceD、show traffic counts
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Which three functions are available under the "Maintain" tab of J-Web?（）A、download and delete log filesB、view real-time statistics of interfacesC、reboot the systemD、view and add licensesE、edit security settings
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多选题Which two statements are true about the application of QoS in a converged network？（）Aend-to-end network delay times that exceed 50 ms for real-time traffic are considered unacceptableBend-to-end network delay times that exceed 250 ms for real-time traffic are considered unacceptableCend-to-end network delay is not a factor as long as the delay is consistentDsome packet loss can be corrected by codec algorithmsERSVP handles voice packet retransmissionFfragmentation is a result of packet loss
考题
判断题RT-PCR就是real-time PCR。A
对B
错
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