单选题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 wil

题目
单选题
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.

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更多“The corporate head office of TestKing has a teleconferencing”相关问题

  • 第1题：

    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.


    正确答案：B
    解析：Explanation:
    VOIP systems utilize UDP because it is faster and uses less overhead. In addition, the reliable transport mechanism used in TCP is useless to VOIP because if a packet gets dropped and needs to be resent, it will be already too late.

    UDP provides a service for applications to exchange messages. Unlike TCP, UDP is connectionless and provides no reliability, no windowing, and no reordering of the received data. However, UDP provides some functions of TCP , such as data transfer, segmentation, and multiplexing using port numbers, and it does so with fewer bytes of overhead and with less processing required. UDP data transfer differs from TCP data transfer in that no reordering or recovery is accomplished. Applications that use UDP are tolerant of lost data, or they have some application mechanism to recover data loss.

  • 第2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3题：

    TestKing has five regional offices that are located in different cities. The IT staff is evaluating WAN technologies to interconnect the regional offices to corporate headquarters. Each of the regional offices should be connected to the corporate headquarters in a hub and spoke arrangement using a packet-switched technology.Which of the following WAN technologies will fulfill these requirements?（）

    A. Frame Relay

    B. ISDN

    C. T1 leased lines

    D. Wireless


    参考答案：A

  • 第4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5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6题：

    TestKing has five regional offices that are located in different cities. The IT staff is evaluating WAN technologies to interconnect the regional offices to corporate headquarters. Each of the regional offices should be connected to the corporate headquarters in a hub and spoke arrangement using a packet-switched technology. Which of the following WAN technologies will fulfill these requirements?（）

    • A、Frame Relay
    • B、ISDN
    • C、T1 leased lines
    • D、Wireless

    正确答案:A

  • 第7题：

    The customer has a dedicated ink jet fax machine that is used to send and receive faxes only from the corporate office. The user complains of streaks on the received faxes while the internal self-prints are fine. Which of the following should a technician recommend？（）

    • A、Clean the scanner glass on the distant machine.
    • B、Clean the scanner glass on the local machine.
    • C、Clean the printer head on the local machine.
    • D、Call the telephone company to increase the line signal level.

    正确答案:A

  • 第8题：

    You work as the enterprise exchange administrator at TestKing.com. TestKing.com makes use of Microsoft Exchange Server messaging solution. TestKing.com has its headquarters in Chicago and branchoffices around the globe. All the offices of Testking.com have a direct link to the Internet. The Chicago office connects to the other offices via a WAN link. You have received instructions from theCIO to install Exchange Server 2010 servers in every office. You need to ensure that your design maintainuser access mailboxes in the event of a domain controller failure as well as ensuring that user is able tosend e-mail messages if a WAN link failure should occur. What should you do？（）

    • A、Your best option should be create an Active Directory site for every office.Thereafter one domain controller and two read only domain controllers should be deployed in everysite.
    • B、Your best option should be create an Active Directory site for every office.Thereafter two domain controllers should be deployed for every site.
    • C、Your best option should be create an Active Directory site for every office.Thereafter a single domain controller should be deployed in every site and site link bridging enabled.
    • D、Your best option should be create an Active Directory site for every office.Thereafter a single domain controller and a read only domain controller should be deployed in everysite.

    正确答案:C

  • 第9题：

    单选题
    A conscious victim who has suffered a blow to the head has symptoms that indicate the possibility of concussion. If the patient feels no indication of neck or spine injury，recommended treatment would include（）.
    A

    turning the victim's head to the side to keep his airway open

    B

    positioning the victim so the head is lower than the body

    C

    giving the victim water if he is thirsty，but no food

    D

    elevating the head and shoulders slightly with a pillow


    正确答案： B
    解析： 暂无解析

  • 第10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11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 forest that contains a single named testking.com. TestKing.com has its headquartets in Chicago and 15 branch offices around the globe， which are configured as Active Directory sites. The branch offices of Testking.com are connected to the Chicagooffices and directly to the Internet. For the future， all the branch offices should have Exchange Server 2010 Hub Transport server that hasfollowing characteristics： 1. The Internet connections of the branch offices should be used to send e-mail. 2. The e-mail messages from the branch offices to the Chicago offices should go via a WAN link. 3. The branch offices should not use the WAN link to send e-mail to via the Internet 4. Administrative overhead should be reduced. What should you do？（）
    A

    The best option is to use 10 Send connectors at every office.

    B

    The best option is to use one SMTP site link at every office.

    C

    The best option is to use one Send connector at every office.

    D

    The best option is to use two Send connectors at every office.


    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：

    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14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15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


    参考答案：C

  • 第16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17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18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19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 forest that contains a single named testking.com. TestKing.com has its headquartets in Chicago and 15 branch offices around the globe， which are configured as Active Directory sites. The branch offices of Testking.com are connected to the Chicagooffices and directly to the Internet. For the future， all the branch offices should have Exchange Server 2010 Hub Transport server that hasfollowing characteristics： 1. The Internet connections of the branch offices should be used to send e-mail. 2. The e-mail messages from the branch offices to the Chicago offices should go via a WAN link. 3. The branch offices should not use the WAN link to send e-mail to via the Internet 4. Administrative overhead should be reduced. What should you do？（）

    • A、The best option is to use 10 Send connectors at every office.
    • B、The best option is to use one SMTP site link at every office.
    • C、The best option is to use one Send connector at every office.
    • D、The best option is to use two Send connectors at every office.

    正确答案:D

  • 第20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21题：

    问答题
    Practice 6　　● You are the head of the Administrative Department of a company. The Managing Director has asked you to write a proposal for office health and safety provisions.　　● Write a proposal for the Managing Director:　　● giving reasons for writing the proposed proposal　　● summarizing the problems that have been raised concerning office health and safety　　● giving the main causes of the possible accidents　　● suggesting new provisions of office health and safety.　　● Write 200~250 words on the separate answer paper provided.

    正确答案： 【参考范文】
    To: Mr. Gates, Managing Director
    From: John Smith, Head of the Administrative Department
    Date: March 18, 2006
    Subject: Office Health and Safety Provisions
    On the request of the Managing Director, I have investigated into the problems raised with regard to office health and safety. Particularly, I have talked to office managers concerning any accidents or job-related illnesses, which have occurred, and I was supposed to recommend ways to improve the situation.
    A study was made about all accidents that were reported in the last year. It shows three main causes: failure to follow safety regulations; faulty equipment; inadequate knowledge of health and safety procedures of new staff.
    Records of all job-related illness were also studied during the past year. Meetings will be held to discuss measures to be taken.
    Proposals:
    It is suggested that a list of safety regulations be clearly displayed in the company’s dining room and main offices.
    Make sure the new staff are well informed of the company’s safety regulations and policy.
    The Personnel Manager should take the responsibility of instructing all new staff on the procedures regarding the use of office equipment and machinery.
    It is indispensable for all staff to exercise fire drill procedures at least twice a year.
    It is decided by office managers that old office equipment be replaced with newer models, especially chairs without right back support.
    解析： 暂无解析

  • 第22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23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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