软件设计师考试历年真题 第 30 页 共 143 页
软件设计师考试历年真题 第 29 页 共 143 页
●以下不属于中间件技术的是 _(65)_ 。
(65)A.javaRMI B.CORBA C.DCOM D.JavaApplet
●Networks can be interconnected by different devices in the physical layer networks can be
connected by _(66)_ 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 _(67)_ 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 _(68)_ network layer, the router may be able to translate between the 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 _(69)_ .As an example,
gateways between Internet e-mail and X.400 e-mail must _(70)_ the e-mail message and change various
header fields.
(66)A.reapers B.relays C.packages D.modems
(67)A.frimes B.packets C.packages D.cells
(68)A.special B.dependent C.similar D.dissimilar
(69)A.syntax B.semantics C.language D.format
(70)A.analyze B.parse C.delete D.create
● The purpose of the requirements definition phase is to produce a clear, complete, consistent,
and testable _(71)_ of the technical requirements for the software product.
During the requirements definition phase, the requirements definition team uses an iterative process
to expand a broad statement of the system requirements into a complete and detailed specification
of each function that the software must perform and each _(72)_ that it must meet. The starting point
is usually a set of high level requirements from the _(73)_ that describe the project or problem.
In either case, the requirements definition team formulates an overall concept for the system
and then defines _(74)_ showing how the system will be operated publishes the system and operations
concept document and conducts a system concept review (SCR).
Following the SCR, the team derives _(75)_ requirements for the system from the high level
requirements and the system and operations concept. using structured or object-oriented analysis.
the team specifies the software functions and algorithms needed to satisfy each detailed requirement.
(71)A.function B.definition C.specification D.statement
(72)A.criterion B.standard C.model D.system
(73)A.producer B.customer C.programmer D.analyser
(74)A.rules B.principles C.scenarios D.scenes
(75)A.detailed B.outlined C.total D.complete