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更多“Network design is a primary re…”相关的问题
A.Transmission Network Review (TNR)
B.Network Design and Performance Consulting (NDPC)
C.Brief System Audit (BSA)
D.System Performance Review (SPR)
E.Radio Network Improvement (RNI)
A．正确
B．错误
A.logical DFDs and ERDB.ideal object model and analysis class modelC.use case models and interface prototypesD.physical DFDs and database schemaA.the database management systemB.the feasibility of techniques usedC.the network topology and technologyD.the user interface and process methodsA.context DFDB.system DFDC.network architecture DFDD.event-response DFDA.vertical partitioning and horizontal replicationB.vertical replication and horizontal partitioningC.integration and distributionD.partitioning and replicationA.storing all data on a single serverB.storing specific tables on different serversC.storing subsets of specific tables on different serversD.duplicating specific tables or subsets on different servers
● Every valid character in a computer that uses even（66） must always have an even number of 1 bits.
● The maximum number of data that can be expressed by 8 bits is（67） .
● Integration （68） is the process of verifying that the components of a system work together as described in the program design and system design specifications.
● GIF files are limited to a maximum of 8 bits/pixel, it simply means that no more than 256 colors are allowed in （69） .
● Computer （70） is a complex consisting of two or more connected computing units, it is used for the purpose of data communication and resource sharing.
（66）
A. parity
B. check
C. test
D. compare
（67）
A. 64
B. 128
C. 255
D. 256
（68）
A. trying
B. testing
C. checking
D. coding
（69）
A. an image
B. a file
C. a window
D. a page
（70）
A. storage
B. device
C. processor
D. network
1) The first task is to specify （71） , which defines the technologies to be used by one, more, or all information systems in terms of their data, processes, interfaces, and network components. This task is accomplished by analyzing the data models and process models that are initially created during requirements analysis.
2) The next systems design task is to develop the （72） . The purpose of this task is to prepare technical design specifications for a database that will be adaptable to future requirements and expansion.
3) Once the database prototype has been built, the systems designer can work closely with system users to develop input, output and dialogue specifications. The （73） must be specified to ensure that the outputs are not lost, misrouted, misused, or incomplete.
4) The fourth design task involves packaging all the specifications from the previous design tasks into a set of specifications that will guide the （74） activities during the following phases of the systems development methodology.
Finally, we should （75） and update the project plan accordingly. The key deliverable should include a detailed plan for the construction phase that should follow.
（71）
A. an application architecture
B. a distributed system
C. a system scope
D. a system physical model
（72）
A. database design specifications
B. database organization decisions
C. data structure specifications
D. data distribution decisions
（73）
A. format and layout
B. transaction details
C. additional instructions
D. internal controls
（74）
A. system administrator’s
B. system analyst’s
C. computer programmer’s
D. system designer’s
（75）
A. adjust the project schedule
B. reevaluate project feasibility
C. evaluate vendor proposals
D. select the best vendor proposal
B. develop; C. developed} of web, multimedia and mobile applications.
With headquarters in Thessaloniki, Tessera has developed business activities covering the whole Greece and has developed a significant partner network and a large customer base {A. by; B. on; C. with} investing in long-term relationships of trust and reliability.
Our company has designed and successfully implemented a significant number of complex software {A. projection; B. project; C. projects} in a wide range of sectors.Tessera has gained exceptional experience in designing web sites and portals, educational games, e-commerce applications and mobile apps.
Tessera seeks to be always {A. keep in touch; B. up to date; C. contact} with current trends and advancements in software technology, constantly investing in new technologies and human resources.
The development department consists of {A. new; B. qualified; C. temporary} staff ensuring high quality, integrated services.At the same time, our personnel is trained systematically in deploying new technologies, aiming that our productions are always on the cutting edge of technology.
All computers need some sort of(71)(OS). Tile majority of modem home computers use some form. of Microsofts OS. The original Microsoft OS was called DOS though most computers use Windows. Windows comes in various versions beginning with(72)x then 95, 98, ME and currently XP. A few computers use IBMs O/SApples Mac uses their own OS beginning with OS I though most modem Macs use version x or x. Apples latest version is OS 10.x. In the past large companies and institutions would have an OS design exclusively for them but as the Commercial OS become more sophisticated the benefits of this practice is becoming less apparent. Some computer professionals,(73)(ISP)and(74)computer users use an OS such as UNIX(or a variant such as Linux), Windows NT or 2000(Win2k)or one of the other network or(75)based OS.
A．Operated System
B．Operated System
C．Operating System
D．Operation System
Conventional computer models of the atmosphere have limited value in predicting short lived local storms like the Edmonton tornado, because the available weather data are generally not detailed enough to allow computers to study carefully the subtle atmospheric changes that come before these storms.In most nations, for example, weather – balloon observations are taken just once every twelve hours at locations typically separated by hundreds of miles.With such limited data, conventional forecasting models do a much better job predicting general weather conditions over large regions than they do forecasting specific local events.
Until recently, the observation intensive approach needed for accurate, very short – range forecasts, or “Nowcasts,” was not feasible.The cost of equipping and operating many thousands of conventional weather stations was extremely high, and the difficulties involved in rapidly collecting and processing the raw weather data from such a network were hard to overcome.Fortunately, scientific and technological advances have overcome most of these problems.Radar systems, automated weather instruments, and satellites are all capable of making detailed, nearly continuous observation over large regions at a relatively low cost.Communications satellites can transmit data around the world cheaply and instantaneously, and modern computers can quickly compile and analyze this large volume of weather information.Meteorologists and computer scientists now work together to design computer programs and video equipment capable of transforming raw weather data into words, symbols, and vivid graphic displays that forecasters can interpret easily and quickly.As meteorologists have begun using these new technologies in weather forecasting offices, Nowcasting is becoming a reality.
11.The word “exceeded” in paragraph I most probably means ____________.
A.added up toB.were more than
C.were about D.were less than
12.Conventional computer models of the atmosphere fails to predict such a short – lived tornado because ______________.
A.the computer is not used to forecast specific local events
B.the computers are not advanced enough to predict it
C.the weather data people collect are often wrong
D.weather conditions in some small regions are not available
13.According to the passage, the word “Nowcast” (paragraph 3) means _______________.
A.a way of collecting raw weather data
B.a forecast which can predict the weather conditions in the small area in an accurate way
C.a network to collect instant weather data
D.a more advanced system of weather observation
14.According to the passage, ___________ is the key factor to making “Nowcasts” a reality.
A.scientific and technological advances such as radar, or satellites
B.computer scientist
C.meteorologists
D.advanced computer programs
15.According to the author, the passage mainly deals with ________________.
A.a tornado in Edmonton, Alberta
B.what’s a “Nowcast”
C.the disadvantage of conventional computer models of the weather forecast
D.a breakthrough in weather forecast
A.可以检索出“design”或“computer”
B.computer与design之间最多可插入3个词
C.computer与design的先后顺序可以颠倒
D.computer与design的先后顺序不可以颠倒
