● (73) are essential for the protection of data.（73）A. MemoryB. BackupsC. FilesD. Blocks
● (73) are essential for the protection of data.
（73）
A. Memory
B. Backups
C. Files
D. Blocks
相关考题：
● The program and the data are kept inside the computer in a place called (73) .A. bus B. cache C. CPU D. memory
●In low-speed network,it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down．In high-speed networks, this approach often works poorly, because in the (71) between sending the notification and notification arriving at the source, thousands of additional (72) may arrive．In ATM network , a major tool for preventing (73) is (74) control．When a host wants a new virtual (75) ,it must describe the traffic to be offered and the service expected．(71) A．intervalB．timeC．slotD．delay(72) A．packetsB．cellsC．messageD．files(73) A．collisionB．congestionC．dropD．delay(74) A．flowB．admissionC．trafficD．time(75) A．pathB．routC．circuitD．way
● A well-designed system should be（73）.①easily understood②reliable③straightforward to implement④straightforward to maintain（73）A．①②B．①③④C．②③④D．①②③④
● The program and the data are kept inside the computer in a place called(73) .(73)A. busB. cacheC. CPUD. memory
The "main storage" normally means that part of internal storage into which instructions and other data must be loaded for subsequent execution or processing. In large computing systems, the term "main storage" is(71) to "memory". "Buffer" mainly indicates a special-purpose storage or storage area allowing, through(72) storage, the data transfer between two functional units having different transfer characteristics. A buffer storage is used between non-synchronized devices or where one is(73) and the other is parallel or between those having different trans far rates. "(74) (memory)" is also a special-purpose buffer storage, smaller and faster than main storage, used to hold a copy of instructions and data obtained from main storage and likely to be needed next by the processor. "Register" is commonly composed of a part of internal storage having a specified storage(75) and usually intended for a specific purpose.A．suitableB．optionalC．choiceD．preferred
试题（73）Tool for defining activities is（73）．（73）A．Dependency DeterminationB．Precedence Diagramming methodC．Rolling Wave PlanningD．Schedule network Templates
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In low-speed network,it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down.In high-speed networks,this approach often works poorly,because in the（71）between sending the notification and notification arriving at the source,thousands of additional（72）may arrive.In ATM network,a major tool for preventing（73）is（74）control.When a host wants a new virtual（75）,it must describe the traffic to be offered and the service expected.A.packetsB.cellsC.messageD.files
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