If two communicating entities are in different hosts connected by a network，there is a risk that PDUs will not arrive in the order in which they were sent，because they may traverse（ ）paths through the network. If each PDUs is given a unique number，and numbers are assigned（ ），then it is a logically simple task for the receiving entity to reorder（ ）PDUs on the basis of sequence number. A problem with this scheme is that，with a（ ）sequence number field，sequence number will repeat. Evidently，the maximum sequence number must be（ ）than the maximum number of PDUs that could be outstanding at any time.A. same B. different C. single D. uniqueA. randomly B. equally C. uniformly D. sequentiallyA. received B. sent C. transmitting D. forwardingA. various B. diverse C. finite D. infinite A. smaller B. greater C. less D. more
If two communicating entities are in different hosts connected by a network，there is a risk that PDUs will not arrive in the order in which they were sent，because they may traverse（ ）paths through the network. If each PDUs is given a unique number，and numbers are assigned（ ），then it is a logically simple task for the receiving entity to reorder（ ）PDUs on the basis of sequence number. A problem with this scheme is that，with a（ ）sequence number field，sequence number will repeat. Evidently，the maximum sequence number must be（ ）than the maximum number of PDUs that could be outstanding at any time.
A. same B. different C. single D. uniqueA. randomly B. equally C. uniformly D. sequentiallyA. received B. sent C. transmitting D. forwardingA. various B. diverse C. finite D. infinite A. smaller B. greater C. less D. more
相关考题：
CDP is being used throughout the Ezonexam network. What are two reasons why the Ezonexam network administrator would use CDP? (Choose two)A. To determine the status of network services on a remote deviceB. To obtain the IP Address of a connected device in order to telnet to the deviceC. To verify the type of cable interconnecting two devicesD. To verify Layer 2 connectivity between two devices when Layer 3 failsE. To obtain VLAN information from directly connected swticehsF. To determine the status of the routing protocols between directly connected routersG. To support automatic network failover during outages
Networks can be interconnected by different devices in the physical layer networks can be connected by (71) or hubs．which just move the bits from one network to an identical network．One layer up we find bridges and switches which operate at data link layer．They can accept (72) ，examine the MAC address and forward the frames to a different network while doing minor protocol translation in the process in me network layer，we have routers that can connect two networks，If two networks have (73) network layer，the router may be able to translate betweenthe packer formats．In the transport layer we find transport gateway，which can interface between two transport connections Finally，in the application layer，application gateways translate message (74) ．As an example，gateways between Internet e-mail and X，400 e-mail must (75) thee-mail message and change various header fields．(68)A．reapersB．relaysC．packagesD．modems
A group of hosts are physically connected to the same switch. The hosts are used by employees of different departments and therefore do not need to directly exchange data on a regular basis.Which technology can a network administrator deploy to reduce unnecessary broadcast traffic between these hosts?（）A. Micro segmentationB. Transparent switchingC. peer-to-peer networkingD. port securityE. store-and-forward switchingF. virtual local area networks
What are two reasons a network administrator would use CDP?() A. to verify the type of cable interconnecting two devicesB. to determine the status of network services on a remote deviceC. to obtain VLAN information from directly connected switchesD. to verify Layer 2 connectivity between two devices when Layer 3 failsE. to obtain the IP address of a connected device in order to telnet to the deviceF. to determine the status of the routing protocols between directly connected routers
A ( ) application is made up of distinct components running in separate runtime environments, usually on different platforms connected through a network.A.databaseB.analogC.high-levelD.distributeD
Networks can be interconnected by different devices.In the physical layer, networks can be connected by（ ） or hubs, which just move the bits from one network to an identical network.A.repeatersB.relaysC.connectorsD.modems
Hosts on the same VLAN can communicate with each other but are unable to communicate with hosts on different VLANs. What is needed to allow communication between VLANs（）。A、a switch with a trunk link that is configured between the switchesB、a router with an IP address on the physical interface that is connected to the switchC、a switch with an access link that is configured between the switchesD、a router with subinterfaces configured on the physical interface that is connected to the switch
When one connection to a host fails in a full mesh network， which of the following is true？（）A、All hosts can communicate.B、No hosts can communicate.C、Half of the hosts will lose communication.D、Only the two hosts between the failed connection will lose communication.
Node ’A’ and ’B’ have two network adapters connected to different networks. Adapter 1 is assigned the address 192.168.0.10 with a subnet mask of 255.255.255.0. Adapter 2 is assigned the address 24.76.1.200 with a subnet mask of 255.255.240.0. What is the minimum number of additional adapters per node required to eliminate a network adapter as a single point of failure？（） A、 One adapter per nodeB、 Two adapters per nodeC、 Four adapters per nodeD、 No additional adapters per node
A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a network failure occurs. Which of the following provides greatest resiliency？（）A、Two switch ports will be needed on a switch,two Ethernet cables will be needed for theserver each connecting to two different Ethernet cards,and one IP address will be neededB、Two switch ports will be needed on two different switches two Ethernet cables will beneeded for the server each connecting to two different Ethernet cards,and one IP address will be neededC、Two switch ports will be needed on two different switches,two Ethernet cables will be needed for the server each connecting to two different Ethernet cards,two different IP addresses will be neededD、One switch port will be needed on one switch,a splitter will be needed to split the connection,two Ethernet cables will be needed for the server each connecting to two different Ethernet cards,and two different IP addresses will be needed
The SCTP layer in the C7 signalling protocol stack is responsible for which of the following:（）A、Establishing a signaling channel between two signaling entities in an ATM networkB、Provide reliable connection for signaling between two IP signaling nodesC、Provide routing for IP signaling messages in an IP signaling network
What are two reasons a network administrator would use CDP (Choose two.)（）。A、to verify the type of cable interconnecting two devicesB、to determine the status of network services on a remote deviceC、to obtain VLAN information from directly connected switchesD、to verify Layer 2 connectivity between two devices when Layer 3 failsE、to obtain the IP address of a connected device in order to telnet to the deviceF、to determine the status of the routing protocols between directly connected routers
What are two reasons a network administrator would use CDP?（）A、to verify the type of cable interconnecting two devicesB、to determine the status of network services on a remote deviceC、to obtain VLAN information from directly connected switchesD、to verify Layer 2 connectivity between two devices when Layer 3 failsE、to obtain the IP address of a connected device in order to telnet to the deviceF、to determine the status of the routing protocols between directly connected routers
On corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?（）A、a router with subinterfaces configured on the physical interface that is connected to the switchB、a router with an IP address on the physical interface connected to the switchC、a switch with an access link that is configured between the switchesD、a switch with a trunk link that is configured between the switches
A group of hosts are physically connected to the same switch. The hosts are used by employees of different departments and therefore do not need to directly exchange data on a regular basis.Which technology can a network administrator deploy to reduce unnecessary broadcast traffic between these hosts?（）A、Micro segmentationB、Transparent switchingC、peer-to-peer networkingD、port securityE、store-and-forward switchingF、virtual local area networks
A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a network failure occurs. Which of the following provides greatest resiliency？（）A、Two switch ports will be needed on a switch， two Ethernet cables will be needed for the server each connecting to two different Ethernet cards， and one IP address will be needed.B、Two switch ports will be needed on two different switches， two Ethernet cables will be needed for the server each connecting to two different Ethernet cards， and one IP address will be needed.C、Two switch ports will be needed on two different switches， two Ethernet cables will be needed for the server each connecting to two different Ethernet cards， two different IP addresses will be needed.D、One switch port will be needed on one switch， a splitter will be needed to split the connection， two ethernet cables will be needed for the server each connecting to two different Ethernet cards， and two different IP addresses will be needed.
A host is to be part of a very small private network， which will never be connected to any other networks. Which of the following name resolution schemes would be the easiest to implement？（）A、DNSB、NISC、DHCPD、etc/hosts file
You are the desktop administrator for one of your company's branch offices. The network in the branch office consists of a single network segment, which contains a domain controller, a DHCP server, 10 Windows 2000 Server computers, and 50 Windows 2000 Professional computers. All servers and client computers are members of the company's Active Directory domain. You purchase 50 new client computers for the branch office. Each new client computer contains a built-in PXE-compliant network adapter. You install and configure RIS on one of the Windows 2000 Server computers that is on the network in the branch office. You create a Windows XP Professional RIS image on the Windows 2000 Server computer. You connect the new client computers to the network in the office, and you turn on each computer. Each computer displays a message stating that it cannot contact a PXE boot server. You verify that the RIS server is connected to the network. You need to ensure that the new client computers can connect to the RIS server and can begin installing Windows XP Professional. What should you do?（）A、Ask a domain administrator to authorize the RIS server. B、Grant the Everyone group Allow - Read NTFS permission on the RIS image.C、Install RIS on the domain controller. Copy the RIS image to the domain controller.D、Add a reservation for the RIS server to the DHCP server.
单选题Hosts on the same VLAN can communicate with each other but are unable to communicate with hosts on different VLANs. What is needed to allow communication between VLANs（）。Aa switch with a trunk link that is configured between the switchesBa router with an IP address on the physical interface that is connected to the switchCa switch with an access link that is configured between the switchesDa router with subinterfaces configured on the physical interface that is connected to the switch
多选题What are two reasons a network administrator would use CDP? （）Ato verify the type of cable interconnecting two devicesBto determine the status of network services on a remote deviceCto obtain VLAN information from directly connected switchesDto verify Layer 2 connectivity between two devices when Layer 3 failsEto obtain the IP address of a connected device in order to telnet to the deviceFto determine the status of the routing protocols between directly connected routers
单选题A group of hosts are physically connected to the same switch. The hosts are used by employees of different departments and therefore do not need to directly exchange data on a regular basis.Which technology can a network administrator deploy to reduce unnecessary broadcast traffic between these hosts?（）AMicro segmentationBTransparent switchingCpeer-to-peer networkingDport securityEstore-and-forward switchingFvirtual local area networks
单选题A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a network failure occurs. Which of the following provides greatest resiliency？（）ATwo switch ports will be needed on a switch,two Ethernet cables will be needed for theserver each connecting to two different Ethernet cards,and one IP address will be neededBTwo switch ports will be needed on two different switches two Ethernet cables will beneeded for the server each connecting to two different Ethernet cards,and one IP address will be neededCTwo switch ports will be needed on two different switches,two Ethernet cables will be needed for the server each connecting to two different Ethernet cards,two different IP addresses will be neededDOne switch port will be needed on one switch,a splitter will be needed to split the connection,two Ethernet cables will be needed for the server each connecting to two different Ethernet cards,and two different IP addresses will be needed
单选题When one connection to a host fails in a full mesh network， which of the following is true？（）AAll hosts can communicate.BNo hosts can communicate.CHalf of the hosts will lose communication.DOnly the two hosts between the failed connection will lose communication.
单选题A project requires a new server to be set up with the ability to automatically fail over its Ethernet connection to a second connection if a network failure occurs. Which of the following provides greatest resiliency？（）ATwo switch ports will be needed on a switch， two Ethernet cables will be needed for the server each connecting to two different Ethernet cards， and one IP address will be needed.BTwo switch ports will be needed on two different switches， two Ethernet cables will be needed for the server each connecting to two different Ethernet cards， and one IP address will be needed.CTwo switch ports will be needed on two different switches， two Ethernet cables will be needed for the server each connecting to two different Ethernet cards， two different IP addresses will be needed.DOne switch port will be needed on one switch， a splitter will be needed to split the connection， two ethernet cables will be needed for the server each connecting to two different Ethernet cards， and two different IP addresses will be needed.
单选题On corporate network, hosts on the same VLAN can communicate with each other, but they are unable to communicate with hosts on different VLANs. What is needed to allow communication between the VLANs?（）Aa router with subinterfaces configured on the physical interface that is connected to the switchBa router with an IP address on the physical interface connected to the switchCa switch with an access link that is configured between the switchesDa switch with a trunk link that is configured between the switches
单选题Node ’A’ and ’B’ have two network adapters connected to different networks. Adapter 1 is assigned the address 192.168.0.10 with a subnet mask of 255.255.255.0. Adapter 2 is assigned the address 24.76.1.200 with a subnet mask of 255.255.240.0. What is the minimum number of additional adapters per node required to eliminate a network adapter as a single point of failure？（）A One adapter per nodeB Two adapters per nodeC Four adapters per nodeD No additional adapters per node
多选题What are two reasons a network administrator would use CDP (Choose two.)（）。Ato verify the type of cable interconnecting two devicesBto determine the status of network services on a remote deviceCto obtain VLAN information from directly connected switchesDto verify Layer 2 connectivity between two devices when Layer 3 failsEto obtain the IP address of a connected device in order to telnet to the deviceFto determine the status of the routing protocols between directly connected routers