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“Sorry Sir, this bus is () downtown, you’ve taken the wrong bus.”
A、make toB、aim toC、bound forD、direct to
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● Both bus and tree topologies are characterized by the use of multipoint (71). For the bus, all stations attach, through appropriate hardware(72)known as a tap, directly to a linear transmission medium, or bus. Full-duplex operation between the station and the tap allows data to be transmitted onto the bus and received from the (73). A transmission from any station propagates the length of the medium in both directions and can be received by all other (74).At each end of the bus is a (75) , which absorbs any signal, removing it from the bus.(71)A. mediumB. connectionC. tokenD. resource(72)A. processingB. switchingC. routingD. interfacing(73)A. treeB. busC. starD. ring(74)A. routersB. stationsC. serversD. switches(75)A. tapB. repeaterC. terminatorD. concentrator
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自动驾驶系统由哪两个跳开快保护?()
A.BUS#1APB.BUS#1BUS#2C.BUS#2APD.BUS#1BUS#2AP
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●In order to improve the performance of a network server,you need to select bus or local bus.The appropriate local bus is (69) .(69) A.VESAB.ISAC.EISAD.PCI
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Both bus and tree topologies are characterized by the use of multipoint().A.mediumB.connectionC.tokenD.resource
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For the bus, all stations attach, through appropriate hardware()known as a tap, directly to a linear transmission medium, or bus.A.processingB.switchingC.routingD.interfacing
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A ( )is a person who travels by train, plane or bus.
A、visitorB、strangerC、patientD、passenger
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Which two statements describe the operation of the CSMA/CD access method, which is in use on the Ezonexam network? (Choose two)A. After a collision, the station that detected the collision has first priority to resend the lost data.B. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.C. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.D. The use of hubs to enlarge the size of collision domains is one way to improve the operation of the CSMA/CD access method.E. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.F. After a collision, all stations involved run an identical backoff algorithm and then synchronize with each other prior to transmitting data.
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Both bus and tree topologies are characterized by the use of multipoint (71) .For the bus,all stations attach,through appropriate hardware (72) known as a tap,directly to a linear transmission medium,or bus.Full-duplex operation between the station and the tap allows data to be transmitted onto the bus and received from the (73) .A transmission from any station propagates the length of the medium in both directions and can be received by all other (74) .At each end of the bus is a (75) ,which absorbs any signal,removing it from the bus.(71)A.mediumB.connectionC.tokenD.resource
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In order to improve the performance of a network server, you need to select bus or local bus. The appropriate local bus is(69).A.VESAB.ISAC.EISAD.PCI
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SCSI interfaces provide for faster data transmission rates (up to 80 megabytes per second) than standard serial and parallel ports. In addition, you can attach many devices to a single SCSI port, so that SCSI is really an I/O bus rather than simply an interface Which two statements about SCSI are true?()A. The bus is limited to 64 devices.B. It is a full-duplex serial standard.C. It is a half-duplex serial standard.D. It allows up to 320 MB/s of shared channel bandwidth.
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He got up so late that he missed the school bus.(改为同义句)He got up________ late________ ________the school bus.
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乘船比乘车更有趣。Taking a boat is_________ _________ than_________ a bus.
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CSMA, although more efficient than ALOHA or slotted ALOHA, still has one glaring inefficiency. If the medium is busy, the station will wait for a random amount of time. When two frames collide, the medium remains ( ) for the duration of transmission of both damaged frames. The use of random delays reduces the probability of( ). For( )frames, compared to propagation time, the amount of wasted capacity can be considerable. This waste can be reduced if a station continues to listen to the medium while( ).The maximum utilization depends on the length of the frame and on the(请作答此空) time; the longer the frames or the shorter the propagation time,the higher the utilization.A.propagation
B.transmission
C.colliding
D.listening
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CSMA, although more efficient than ALOHA or slotted ALOHA, still has one glaring inefficiency. If the medium is busy, the station will wait for a random amount of time. When two frames collide, the medium remains (请作答此空) for the duration of transmission of both damaged frames. The use of random delays reduces the probability of( ). For( )frames, compared to propagation time, the amount of wasted capacity can be considerable. This waste can be reduced if a station continues to listen to the medium while( ).The maximum utilization depends on the length of the frame and on the( ) time; the longer the frames or the shorter the propagation time,the higher the utilization.A.convenient
B.inconvenient
C.usable
D.unusable
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Both bus and tree topologies are characterized by the use of multipoint (1).For the bus, all stations attach, through appropriate hardware (2) known as a tap, directly to a linear transmission medium, or bus. Full-duplex operation between the station and the tap allows data to be transmitted onto the bus and received from the(3). A transmission from any station propagates the length of the medium in both directions and can be received by all other (4). At each end of the bus is a (5) , which absorbs any signal, removing it from the bus.
空白(4)处应选择()A、routersB、stationsC、serversD、switches
考题
Both bus and tree topologies are characterized by the use of multipoint (1).For the bus, all stations attach, through appropriate hardware (2) known as a tap, directly to a linear transmission medium, or bus. Full-duplex operation between the station and the tap allows data to be transmitted onto the bus and received from the(3). A transmission from any station propagates the length of the medium in both directions and can be received by all other (4). At each end of the bus is a (5) , which absorbs any signal, removing it from the bus.
空白(2)处应选择()A、processingB、switchingC、routingD、interfacing
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The customer brings their mini-tower and a new DVD/RW drive they want installed. The technician finds a second hard drive in an empty 5.25 bay connected to the secondary bus and jumpered as a slave. The ribbon cable will not stretch from the primary hard drive to the open 5.25 inch bay. Which of the following is the BEST solution?()A、Connect the new DVD drive as the primary on the secondary bus and leave the old CD drive disconnected.B、Move the secondary hard drive next to the primary hard drive and connect to the primary bus. Connect the new DVD drive as the slave on the secondary bus.C、Move the secondary hard drive from the secondary to the primary bus and then reformat the hard drive after rebooting then reassign the drive letters in disk management prior to installing the new DVD drive on the secondary bus.D、Move the secondary hard drive to the bay and then connect it to the primary bus. Connect themini-tower and the new DVD drive as the master on the secondary bus.
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Which of the following statements correctly describe the differences between half-duplex and full-duplex Ethernet?()A、Full-duplex Ethernet uses CSMA/CD to prevent collisions.B、Half-duplex Ethernet uses a loopback circuit to detect collisions.C、A full-duplex Ethernet card allows 20Mbps for data transmission.D、Full-duplex Ethernet makes use of two pairs of wires for data.E、An Ethernet hub can operate both half and full duplex simultaneously.
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What are the two parallel SCSI specifications?()A、 Up to 25 m bus lengthB、 Only one device per SCSI busC、 Up to 16 devices per SCSI busD、 Half-duplex operationE、 Full-duplex operation
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All client computers in your company run Windows 7 Enterprise. Each client computer runs one guest virtual machine (VM) in Windows Virtual PC . A user reports that a supported USB device connected to his client computer does not appear in the guest VM. The USB device functions correctly on the client computer. You need to ensure that the USB device can be installed in the guest VM. What should you do?()A、Use Virtual PC Manager to attach the USB device on the host.B、Run the Add Hardware Wizard in the guest.C、Use the Computer Management console to scan for hardware changes in the guest.D、Use the Computer Management console to update the USB Virtualization Bus driver on the host.
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An on-premise application is exposed to external users through a Windows Communication Framework (WCF) service endpoint registered in the Windows Azure AppFabric Service Bus. You need to recommend an approach for providing transport-level security that maximizes performance and minimizes bandwidth requirements. What should you recommend?()A、 Use reliable messaging. Use HTTP for message delivery.B、 Use binary message encoding. Use TCP for message delivery.C、 Use Plain Old XML (POX) messages. Use TCP for message delivery.D、 Use Message Transmission Optimization Mechanism (MTOM) message encoding. Use HTTPS formessage delivery
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Which of the following hardware components is necessary for a server to access data directly on afiber channel based SAN?()A、Gigabit NICB、RAID controller cardC、SATA controller cardD、Host bus adapter
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多选题You are designing a service that will use the Windows Azure AppFabric Service Bus. You need to recommend an approach for controlling access to the service by using the Windows Azure AppFabric Access Control Service. Which two actions should you recommend?()AConfigure the service to not require authentication.BConfigure the service to require a relay access token.CSpecify message security for all communications between clients and the service.DSpecify transport security for allcommunications between clients and the service.
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多选题SCSI interfaces provide for faster data transmission rates (up to 80 megabytes per second) than standard serial and parallel ports. In addition, you can attach many devices to a single SCSI port, so that SCSI is really an I/O bus rather than simply an interface Which two statements about SCSI are true?()AThe bus is limited to 64 devices.BIt is a full-duplex serial standard.CIt is a half-duplex serial standard.DIt allows up to 320 MB/s of shared channel bandwidth.
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单选题Suppose half the people on a bus exit at each stop and no additional passengers board the bus. If on the third stop the next to last person exits the bus, then how many people were on the bus?A
20B
16C
8D
4
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单选题An on-premise application is exposed to external users through a Windows Communication Framework (WCF) service endpoint registered in the Windows Azure AppFabric Service Bus. You need to recommend an approach for providing transport-level security that maximizes performance and minimizes bandwidth requirements. What should you recommend?()A
Use reliable messaging. Use HTTP for message delivery.B
Use binary message encoding. Use TCP for message delivery.C
Use Plain Old XML (POX) messages. Use TCP for message delivery.D
Use Message Transmission Optimization Mechanism (MTOM) message encoding. Use HTTPS formessage delivery