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 h

题目

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.

相似考题

1.The corporate head office of Ezonexam 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.

2.Network managers have long awaited practical voice-over-IP(VOIP)solutions. VOIP promises ease network management and decreases(66)by converging a company's telephony and data infrastructures into one network. And a VOIP solution implemented at a company's head-quarters with far-reaching branch offices can(67)tremendous amounts of money in long distance phone bills, provided that solution delivers POTS-like voice(68)over the Internet.VOIP gateways are designed to convert voice from the(69)domain to the circuit switched domain. VOIP solutions use a digital signal processor(DSP)to process the voice data, preparing the voice sample for transmission by compressing voice and removing jitter. The VOIP equipment must comply with the(70)H.323 standard defined by the International Telecommunication Union, or ITU.A．timeB．cashC．costsD．space

3.Network managers have long awaited practical voice-over-IP(VOIP)solutions. VOIP promises(71)network management and decreases costs by(72)a company's telephony and data infrastructures into one network. And a VOIP solution implemented at a company' s head -quarters with far -reaching branch offices can(73)tremendous amounts of(74)in long distance phone bills, provided that solution delivers POTS -like voice(75)over the Internet.A．complicatedB．usefulC．easeD．orderly

4.Network managers have long(140)practical voice-over-IP(VOIP)solutions. VOIP(141)ease network management and decreases costs by converging a company's telephony and data infrastructures into one network. And a VOIP solution implemented at a company's head-quarters with far-reaching branch offices can(142)tremendous amounts of(143)in long distance phone bills, provided that solution delivers POTS-like voice(144)over the Internet.A．awaitB．awaitedC．awaitingD．awaits

更多“The corporate head office of TestKing has a teleconferencing system that uses VOIP (voice ”相关问题

  • 第1题：

    You are the network administrator for the Beijing office of TestKing. A branch

    office is located in Cairo. The DNS servers in both locations run Windows Server

    2003.

    The network uses two DNS namespaces internally. They are named

    publishing.testking.com and testking.com. The locations of the primary name

    servers are shown in the following table.

    The Beijing office contains some servers that are registered in the testking.com zone

    and other that are registered in the publishing.testking.com zone. All computers in

    the Beijing office are configured to use the local DNS server as their preferred DNS

    server. The two offices are connected only by using a VPN through the Internet.

    Various network problems occasionally result in loss of connectivity between the

    two offices.

    Firewalls prevent the DNS servers in both offices from receiving queries from the

    Internet.

    You need to configure the DNS server in the Beijing office to allow successful

    resolution of all queries from the Beijing office for names in the

    publishing.testking.com namespace, even when the VPN link between the Beijing

    and Cairo offices fails.

    What should you configure on the DNS server in the Beijing office?（）


    参考答案：B

  • 第2题：

    The LAN needs are expanding at the Testking corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the TestKing network.Which of the following are layer 1 devices that you can use?（）

    A. A switch.

    B. A router.

    C. A network adapter card.

    D. A hub.

    E. A repeater.


    参考答案：D, E

  • 第3题：

    The LAN needs are expanding at the Testking corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the TestKing network.Which of the following are layer 1 devices that you can use?（）

    • A、A switch.
    • B、A router.
    • C、A network adapter card.
    • D、A hub.
    • E、A repeater.

    正确答案:D,E

  • 第4题：

    The Testking Corporation consists of the head office in New York with its regional offices in: Chicago, Detroit, Philadelphia, Toronto, and Atlanta. These offices need to be connected in a WAN, and Testking wishes to do this via a hub and spoke arrangement that will utilize packet-switched technology.Which one of the WAN technologies below would be the best choice for Testking?（）

    • A、ISDN
    • B、Wireless
    • C、Frame Relay
    • D、T1 leased line
    • E、ATM
    • F、VPN

    正确答案:C

  • 第5题：

    VOIP has been implemented at the main office of the Company network. Which two statements  are true about voice packets in a LAN？（）

    • A、 Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media  portion of the VoIP communication.  
    • B、 Voice traffic data flow involves large volumes of large packets.  
    • C、 Because a packet loss involves a small amount of data, voice traffic is less affected by packet  losses than traditional data traffic is.  
    • D、 Voice packets are encapsulated in TCP segments to allow for proper sequencing during  delivery. 
    • E、 Voice packets are very sensitive to delay and jitter. 

    正确答案:A,E

  • 第6题：

    Which two statements correctly identify factors to consider when Configuring WAN QoS？（）

    • A、Voice Traffic uses Assured Forwarding
    • B、Voice Signaling traffic uses Assured Forwarding
    • C、Voice Signaling traffic uses priority queuing
    • D、Voice Traffic uses priority queuing
    • E、Voice signaling traffic should use priority queuing with Assured Forwarding

    正确答案:B,D

  • 第7题：

    单选题
    You add the following commands into a routed topology： router eigrp 1 variance 3 traffic-share min across-interfaces. Users now complain about voice quality in your VoIP system. What should be done？ （）
    A

     Add the command： router eigrp 1 traffic-share voice interface fast 0/0

    B

     Reconfigure EIGRP to recognize voice packets

    C

     Remove the variance from the configuration

    D

     Reconfigure the VoIP system to use RTP sequence number headers

    E

     Use an H '323 gatekeeper for your VoIP system to negotiate an H'245 uneven packet buffer

    F

     Reconfigure EIGRP to version 2


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    Which statement is true about the Call Admission Control （CAC） feature in VoIP networks？（）
    A

     CAC is used to allocate enough bandwidth for the number of calls that are allowed on the VoIP network.

    B

     CAC is used to protect the quality of the voice calls by preventing call establishment if enough resources are not available on the network.

    C

     CAC provides queuing mechanisms for voice calls if the packets exceed the configured or budgeted rate.

    D

     In a VoIP network the CAC can be replaced with the LLQ QoS mechanism if it has been properly implemented.


    正确答案： B
    解析： 暂无解析

  • 第9题：

    单选题
    Which statement is true about the distributed call control in a VoIP network？（）
    A

    the VoIP endpoints have the intelligence to set up and control calls

    B

    Call setup and control functionality is centralized in one call agent or cluster

    C

    Call setup and control resides in call agents that are distributed throughout the network

    D

    Each VoIP device has separate call control， voice packetization， and transport mechanisms


    正确答案： A
    解析： 暂无解析

  • 第10题：

    单选题
    TestKing.com has a large corporate network that uses multiple routing protocols.Hosts in a portion of the network that uses EIGRP have become unreachable.Which router command will allow you, the network technician, to view the status of these routes?（）
    A

    TestKing# show eigrp entries

    B

    TestKing# show protocols

    C

    TestKing# debug eigrp routes

    D

    TestKing# show ip route eigrp

    E

    TestKing# show route eigrp


    正确答案： D
    解析： 暂无解析

  • 第11题：

    单选题
    The Acme Rocket Corporation is integrating their existing Octel voice mail system with Cisco CallManager Express. The Octel voice mail system has four ports and a voice mail pilot point of 53222. How should the CallManager Express be configured to support this integration? （）
    A

    A separate VoIP dial peer needs to be configured for the four pilot point numbers. 

    B

    Four dial peers need to be configured with the same pilot point number. 

    C

    Four ephone-dns and four ephones need to be configured with the same pilot point number. 

    D

    Four ephones and four dial peers need to be configured with the same pilot point number. 


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    The Testking Corporation consists of the head office in New York with its regional offices in: Chicago, Detroit, Philadelphia, Toronto, and Atlanta. These offices need to be connected in a WAN, and Testking wishes to do this via a hub and spoke arrangement that will utilize packet-switched technology.Which one of the WAN technologies below would be the best choice for Testking?（）
    A

    ISDN

    B

    Wireless

    C

    Frame Relay

    D

    T1 leased line

    E

    ATM

    F

    VPN


    正确答案： E
    解析： 暂无解析

  • 第13题：

    TestKing.com has a large corporate network that uses multiple routing protocols.Hosts in a portion of the network that uses EIGRP have become unreachable.Which router command will allow you, the network technician, to view the status of these routes?（）

    A. TestKing# show eigrp entries

    B. TestKing# show protocols

    C. TestKing# debug eigrp routes

    D. TestKing# show ip route eigrp

    E. TestKing# show route eigrp


    参考答案：D

  • 第14题：

    【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 term”Voice 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


    正确答案：C,B,A

  • 第15题：

    TestKing.com has a large corporate network that uses multiple routing protocols.Hosts in a portion of the network that uses EIGRP have become unreachable.Which router command will allow you, the network technician, to view the status of these routes?（）

    • A、TestKing# show eigrp entries
    • B、TestKing# show protocols
    • C、TestKing# debug eigrp routes
    • D、TestKing# show ip route eigrp
    • E、TestKing# show route eigrp

    正确答案:D

  • 第16题：

    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.

    正确答案:C

  • 第17题：

    You are planning to connect your three branch offices to the corporate site via Frame Relay. The first branch office has been assigned the network 10.1.0.0/16， the second 10.2.0.0/16， the third 10.3.0.0/16， and the corporate headquarters uses 10.0.0.0/16. You would like to summarize all branch and corporate networks into a single route at the corporate site. Which network address and subnet mask should you choose？（）  

    • A、 10.0.0.0/24
    • B、 10.0.0.0/16
    • C、 10.0.0.0/14
    • D、 10.0.0.0/15

    正确答案:C

  • 第18题：

    You work as the enterprise exchange administrator at TestKing.com. TestKing.com makes use of Microsoft Exchange Server messaging solution. The TestKing.com network consists of a single ActiveDirectory domain named testking.com. TestKing.com is configured to run in an Exchange 2010 environment. The users at TestKing.com useMicrosoft Office Outlook 2010 to access the public folders. TestKing.com has joined with another company that also uses Microsoft Office Outlook 2010. You are now busy with a sharing solution for bothcompanies. You have received instructions from the CIO to propose a sharing information strategy thatensures corss-organizaional access to user contacts as well as free/busy information. What should you do？（）

    • A、The best option is to implementing Microsoft Modify LifeCyle Manager （ILM） 2007.
    • B、The best option is to create cross forest trusts.
    • C、The best option is to use the Microsoft Exchange Inter-Organization Replication tool.
    • D、The best option is to implementing Federated Sharing.

    正确答案:D

  • 第19题：

    单选题
    Your network has a main office and a branch office. The branch office has five client computers that runWindows 7 and a server that runs Windows Server 2008 R2. The branch office server is enabled for branchCache. You need to configure Windows Firewall on each client computer so that cached content canbe retrieved from the branch office server.  Which firewall rule should you enable on the client computers?（）
    A

    BranchCache - Content Retrieval （Uses HTTP）

    B

    BranchCache - Hosted Cache Server （Uses HTTPS）

    C

    BranchCache - Peer Discovery （Uses WSD）

    D

    File and Printer Sharing


    正确答案： B
    解析： 暂无解析

  • 第20题：

    多选题
    The LAN needs are expanding at the Testking corporate office, which is quickly growing. You are instructed to enlarge the area covered by a single LAN segment on the TestKing network.Which of the following are layer 1 devices that you can use?（）
    A

    A switch.

    B

    A router.

    C

    A network adapter card.

    D

    A hub.

    E

    A repeater.


    正确答案： E,B
    解析： 暂无解析

  • 第21题：

    多选题
    VOIP has been implemented at the main office of the Company network. Which two statements  are true about voice packets in a LAN？（）
    A

    Voice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media  portion of the VoIP communication.

    B

    Voice traffic data flow involves large volumes of large packets.

    C

    Because a packet loss involves a small amount of data, voice traffic is less affected by packet  losses than traditional data traffic is.

    D

    Voice packets are encapsulated in TCP segments to allow for proper sequencing during  delivery.

    E

    Voice packets are very sensitive to delay and jitter.


    正确答案： B,D
    解析： 暂无解析

  • 第22题：

    单选题
    You work as the enterprise exchange administrator at TestKing.com. TestKing.com makes use of Microsoft Exchange Server messaging solution. The TestKing.com network consists of a single ActiveDirectory domain named testking.com. TestKing.com is configured to run in an Exchange 2010 environment. The users at TestKing.com useMicrosoft Office Outlook 2010 to access the public folders. TestKing.com has joined with another company that also uses Microsoft Office Outlook 2010. You are now busy with a sharing solution for bothcompanies. You have received instructions from the CIO to propose a sharing information strategy thatensures corss-organizaional access to user contacts as well as free/busy information. What should you do？（）
    A

    The best option is to implementing Microsoft Modify LifeCyle Manager （ILM） 2007.

    B

    The best option is to create cross forest trusts.

    C

    The best option is to use the Microsoft Exchange Inter-Organization Replication tool.

    D

    The best option is to implementing Federated Sharing.


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    Which statement is true about IP telephony calls？（）
    A

     A Voice over IP （VoIP） packet consists of the voice payload， IP header， TCP header， RTP header， and  Layer 2 link header.

    B

     The voice carrier stream uses H323 to set up， maintain， and tear down call endpoints.

    C

     Call control signaling uses Real-Time Transport Protocol （RTP） packets that contain actual voice  samples.

    D

     The sum of bandwidth necessary for each major application， including voice， video， and data， should not exceed 75 percent of the total available bandwidth for each link.


    正确答案： D
    解析： 暂无解析

  • 第24题：

    单选题
    You are planning to connect your three branch offices to the corporate site via Frame Relay. The first branch office has been assigned the network 10.1.0.0/16， the second 10.2.0.0/16， the third 10.3.0.0/16， and the corporate headquarters uses 10.0.0.0/16. You would like to summarize all branch and corporate networks into a single route at the corporate site. Which network address and subnet mask should you choose？（）
    A

     10.0.0.0/24

    B

     10.0.0.0/16

    C

     10.0.0.0/14

    D

     10.0.0.0/15


    正确答案： A
    解析： 暂无解析

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