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When we use VolP service，the voice packets over the Internet arrive at their destination in a（ ） stream.
A.burst B.delayed C.interrupted D.continuous
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更多 “ When we use VolP service，the voice packets over the Internet arrive at their destination in a（ ） stream.A.burst B.delayed C.interrupted D.continuous ” 相关考题
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To maintain a telephone conversation over the Internet. The voice packets must arrive at their destination in ()A.a continuous streamB.a burst streamC.a delayed streamD.a burst mode
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You develop a Windows Communication Foundation (WCF) service that uses basic authentication for client credentials. This service is currently configured to use message security. The service is hosted on a server in workgroup mode.Users report that their passwords are stolen when they use public computers.You need to ensure that messages are secure and users are authenticated.You prevent the service from being called over HTTP through Microsoft Internet Information Services (IIS) configuration.What should you do next?（）A. Use the transport security mode and specify None for transport client credential type.B. Use the transportWithMessageCredential security mode and specify Basic for the transport client credential type.C. Use the message security mode and specify Basic for the transport client credential type.D. Use the transportWithMessageCredential security mode and specify None for the transport client credential type.
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哪位 帮我翻译一下:
Because speech is the most convenient form of communication, in the future we want essentially natural conversations with computers. The primary point of contact will be a simple device that will act as our window on the world. You will simply talk to it. The device will be permanently connected to the Internet and will beep relevant information up to you as it comes in.Just how quickly people will adapt to a voice-based Internet world is uncertain. Many believe that, initially at least, we will need similar conventions for the voice to those we use at present on screen: click, back, forward, and so on. But soon you will undoubtedly be able to interact by voice with all those IT-based services you currently connect with over the Internet by means of a keyboard. This will help the Internet serve the entire population, not just techno-freaks.Changes like this will encompass the whole world. Because English is the language of science, it will probably remain the language in which the technology is most advanced, but most speech-recognition techniques are transferable to other language provided there is sufficient motivation to undertake the work..
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is the use of computing resources (hardware and software) that a delivered as a service over a network (typically the Internet).A.VirtualizationB.Internet of thingsC.Cloud computerD.Cloud computing
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What ensures that voice packets are given priority throughout the network so that conversations arrive intact?()
A.CentrexB.Packet encryptionC.Intelligent call routingD.QoS
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VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link .How does ERS use the VLAN tag?（）A. provide service internetworkingB. support transparency for Layer 2 framesC. indicate destination as a connection identifierD. map to the DLCI in service internetworking
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【A popular service that has attercted the interest of companies and has home users alike is the sending of voice signals over an IP-based network, such as the Internet. The practice of making telephone calls over the internet has had a number of different names, including packet voice, voice over packet, voice over the internet, internet telephone, and Voice over Ip（Voip）. But it appears the industry has settled on the termVoice ove IP in reference to the internet protocol, which controls the transfer of data over the internet. There are currently three ways to deliver VoIp to users, the first technique is found at the corporate level. Many companies are offering VoIP systerms that operate over a local area network. These systems involve a fair amount of equipment, such as VoIP servers, special IP-enabled telephones, and routers that can direct telephone calls. Today a large portion of corporate sites have converted their older internal telephone systems to VoIP systems that opreate over a LAN, thus converging two systems into one. A second common solution is the one often encountered at home. Using existing telephones, a special converter is added between the telephone and a high speed internet（DSL or cable modem）connection. The converter digitizes the voice signal and creates a stream of packets that are then sent over an ip connection.The third technique involves smart cell phones. Never cell technologies are all packet-based, thus requiring a telephone call to be converted to digital packets and sending those packets over IP networks.】From the paragraph above，a popular service that has attracetd the interest of companies and home users,is termed as （） . The data transfer over the Internet is controlled by the （） . At corporate level, many companies have replaced their older internal telephone systerms with （） that oprerate over a local area network.A、voice over the internet B、voice over packet C、Voice over IP D、internet telephony A、packet B、internet protocol C、industry D、VoIp servers A、VoIP systems B、IP-enablde telephones C、VoIP servers D、routers
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（ ） is the use of computing ...deliverd as a service over a network.A.Virtualzation
B.Internet of things
C.ClouD.computer
D.ClouD.computing
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Which of the following technologies would an Internet Service Provider use to support overlapping customer VLAN ID’s over transparent LAN services？ （）A、 802.1q tunnelingB、 ATMC、 SDHD、 IP Over Optical NetworkingE、 ISL
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Which two statements are true about Voice over IP （VoIP） packet delivery in a digital infrastructure？ （）A、 Packets can arrive out of order.B、 Packets must take the same path to the destination.C、 Once packets are received at the destination router， the router performs sampling to ensure the quality of the voice traffic.D、 Packets can experience varying delays across the network.E、 Packets containing voice samples are sequentially numbered by default， allowing for reordering upon arrival at the terminal router along the path.
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The corporate head office of TestKing has a teleconferencing system that uses VOIP (voice over IP) technology. This system uses UDP as the transport for the data transmissions. If these UDP datagrams arrive at their destination out of sequence,what will happen?（）A、UDP will send an ICMP Information Request to the source host.B、UDP will pass the information in the datagrams up to the next OSI layer in the order that they arrive.C、UDP will drop the datagrams.D、UDP will use the sequence numbers in the datagram headers to reassemble the data in the correct order.E、UDP will not acknowledge the datagrams and wait for a retransmission of the datagrams.
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Which layer in the TCP/IP model is responsible for delivering packets to their destination?（）A、Application LayerB、Transport LayerC、Internet LayerD、Network Access Layer
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When multiple PPP over Ethernet subscribers connect using the same DSL modem, which two attributes does the ERX use to differentiate between subscribers? （）(Choose two.)A、PPP session IDB、subscriber nameC、source MAC addressD、destination MAC address
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You develop a Windows Communication Foundation (WCF) service that uses basic authentication for client credentials. This service is currently configured to use message security. The service is hosted on a server in workgroup mode.Users report that their passwords are stolen when they use public computers.You need to ensure that messages are secure and users are authenticated.You prevent the service from being called over HTTP through Microsoft Internet Information Services (IIS) configuration. What should you do next?（）A、Use the transport security mode and specify None for transport client credential type.B、Use the transportWithMessageCredential security mode and specify Basic for the transport client credential type.C、Use the message security mode and specify Basic for the transport client credential type.D、Use the transportWithMessageCredential security mode and specify None for the transport client credential type.
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Your Service Provider does not support Link Fragmentation and Interleave, but upstream serialization delay on your broadband link is affecting voice quality. Which two mitigation strategies are viable?（）A、Upgrade your residential broadband service to at least 768kbps uplink.B、Switch your home router to use PPP encapsulation.C、Use the ip tcp adjust-mss interface command.D、Employ QoS techniques to drop large data packets.E、Use traffic shaping to interrupt large data packets.
考题
VLAN Tagging, also known as Frame Tagging, is a method developed by Cisco to help identify packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link .How does ERS use the VLAN tag?（）A、provide service internetworkingB、support transparency for Layer 2 framesC、indicate destination as a connection identifierD、map to the DLCI in service internetworking
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Why is QoS important in a converged network?（）A、Because data does not need to arrive intact, so data transfer rates can be variableB、Because lost voice-data packets must be retransmittedC、Because voice data packets should arrive quickly and sequentially, and with no lost dataD、Because voice data packets must follow a single dedicated path through the network
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What are two ways to minimize the delay of VoIP packets that are traversing a network？ （）A、 Use WFQ， CBWFQ， and LLQ to prioritize delay-sensitive packets.B、 Use WFQ， CBWFQ， and LLQ to compress the payload.C、 Give TCP packets priority over UDP packets.D、 Use control plane policing for cRTP queuing.E、 Use stacker and predictor to compress the payload.
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What ensures that voice packets are given priority throughout the network so that conversations arrive intact?（）A、QoSB、CentrexC、Packet encryptionD、Intelligent call routing
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What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones？（）A、 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.B、 79xx IP phones do not mark protocol packets such as DHCP， DNS， or TFTP with non-zero DSCP values.C、 79xx IP phones do not mark voice packets with optimal DSCP values.D、 79xx IP phones use a custom protocol to communicate CDP information to the switch.
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多选题Which two statements are true about Voice over IP （VoIP） packet delivery in a digital infrastructure？ （）APackets can arrive out of order.BPackets must take the same path to the destination.COnce packets are received at the destination router， the router performs sampling to ensure the quality of the voice traffic.DPackets can experience varying delays across the network.EPackets containing voice samples are sequentially numbered by default， allowing for reordering upon arrival at the terminal router along the path.
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单选题What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones？（）A
79xx IP phones do not automatically mark voice packets with non-zero DSCP values.B
79xx IP phones do not mark protocol packets such as DHCP， DNS， or TFTP with non-zero DSCP values.C
79xx IP phones do not mark voice packets with optimal DSCP values.D
79xx IP phones use a custom protocol to communicate CDP information to the switch.
考题
多选题Your Service Provider does not support Link Fragmentation and Interleave, but upstream serialization delay on your broadband link is affecting voice quality. Which two mitigation strategies are viable?（）AUpgrade your residential broadband service to at least 768kbps uplink.BSwitch your home router to use PPP encapsulation.CUse the ip tcp adjust-mss interface command.DEmploy QoS techniques to drop large data packets.EUse traffic shaping to interrupt large data packets.
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单选题What is required to enable fragmentation of large FTP packets when voice quality on the network is affected by FTP transfers?（）A
Configure TCP header compression on interfaceB
Configure MPL on the Frame Relay interfacesC
Configure FRF 12 fragmentation on the Frame Relay interfacesD
Fragmentation is not supported with service internetworking
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填空题When you arrive at the destination, you should turn yourself into a relaxed traveler rather than an outsider.____
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单选题Which of the following technologies would an Internet Service Provider use to support overlapping customer VLAN ID’s over transparent LAN services？ （）A
802.1q tunnelingB
ATMC
SDHD
IP Over Optical NetworkingE
ISL
考题
单选题Choose the false statement concerning the use of CiscoWorks Internetwork Performance Monitor (IPM) in a Teleworker deployment.（）A
IPM should not be run on a production network. B
IPM helps verify if a Service Provider is meeting the Service Level Agreement. C
IPM contains a database that can store data on latency, jitter, and drops of voice packets over a period of weeks or months. D
The QoS service policy should contain an allocation of sufficient bandwidth in the priority queue (LLQ) for both the SAA probe simulating a voice call and the voice call. If not, voice quality will suffer.
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