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.
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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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.
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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
You are the network administrator for the Beijing office of TestKing. A branchoffice is located in Cairo. The DNS servers in both locations run Windows Server2003.The network uses two DNS namespaces internally. They are namedpublishing.testking.com and testking.com. The locations of the primary nameservers are shown in the following table.The Beijing office contains some servers that are registered in the testking.com zoneand other that are registered in the publishing.testking.com zone. All computers inthe Beijing office are configured to use the local DNS server as their preferred DNSserver. The two offices are connected only by using a VPN through the Internet.Various network problems occasionally result in loss of connectivity between thetwo offices.Firewalls prevent the DNS servers in both offices from receiving queries from theInternet.You need to configure the DNS server in the Beijing office to allow successfulresolution of all queries from the Beijing office for names in thepublishing.testking.com namespace, even when the VPN link between the Beijingand Cairo offices fails.What should you configure on the DNS server in the Beijing office?（）
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 entriesB. TestKing# show protocolsC. TestKing# debug eigrp routesD. TestKing# show ip route eigrpE. TestKing# show route eigrp
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.
【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
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.
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 entriesB、TestKing# show protocolsC、TestKing# debug eigrp routesD、TestKing# show ip route eigrpE、TestKing# show route eigrp
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、ISDNB、WirelessC、Frame RelayD、T1 leased lineE、ATMF、VPN
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.
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.
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、 10.0.0.0/24B、 10.0.0.0/16C、 10.0.0.0/14D、 10.0.0.0/15
Which two statements correctly identify factors to consider when Configuring WAN QoS？（）A、Voice Traffic uses Assured ForwardingB、Voice Signaling traffic uses Assured ForwardingC、Voice Signaling traffic uses priority queuingD、Voice Traffic uses priority queuingE、Voice signaling traffic should use priority queuing with Assured Forwarding
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.
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 0/0B Reconfigure EIGRP to recognize voice packetsC Remove the variance from the configurationD Reconfigure the VoIP system to use RTP sequence number headersE Use an H '323 gatekeeper for your VoIP system to negotiate an H'245 uneven packet bufferF Reconfigure EIGRP to version 2
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?（）ABranchCache - Content Retrieval （Uses HTTP）BBranchCache - Hosted Cache Server （Uses HTTPS）CBranchCache - Peer Discovery （Uses WSD）DFile and Printer Sharing
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.
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?（）AA switch.BA router.CA network adapter card.DA hub.EA repeater.
单选题Which statement is true about the distributed call control in a VoIP network？（）Athe VoIP endpoints have the intelligence to set up and control callsBCall setup and control functionality is centralized in one call agent or clusterCCall setup and control resides in call agents that are distributed throughout the networkDEach VoIP device has separate call control， voice packetization， and transport mechanisms
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？（）AVoice carrier stream utilizes Real-Time Transport Protocol (RTP) to carry the audio/media portion of the VoIP communication.BVoice traffic data flow involves large volumes of large packets.CBecause a packet loss involves a small amount of data, voice traffic is less affected by packet losses than traditional data traffic is.DVoice packets are encapsulated in TCP segments to allow for proper sequencing during delivery.EVoice packets are very sensitive to delay and jitter.
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?（）ATestKing# show eigrp entriesBTestKing# show protocolsCTestKing# debug eigrp routesDTestKing# show ip route eigrpETestKing# show route eigrp
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？（）AThe best option is to implementing Microsoft Modify LifeCyle Manager （ILM） 2007.BThe best option is to create cross forest trusts.CThe best option is to use the Microsoft Exchange Inter-Organization Replication tool.DThe best option is to implementing Federated Sharing.
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? （）AA separate VoIP dial peer needs to be configured for the four pilot point numbers. BFour dial peers need to be configured with the same pilot point number. CFour ephone-dns and four ephones need to be configured with the same pilot point number. DFour ephones and four dial peers need to be configured with the same pilot point number.
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.
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?（）AISDNBWirelessCFrame RelayDT1 leased lineEATMFVPN
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 10.0.0.0/24B 10.0.0.0/16C 10.0.0.0/14D 10.0.0.0/15