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軟件設(shè)計(jì)師每日一練試題內(nèi)容(2021/11/25)
試題1: 以下關(guān)于結(jié)構(gòu)化開(kāi)發(fā)方法的敘述中,不正確的是()。
A.總的指導(dǎo)思想是自頂向下,逐層分解
B.基本原則是功能的分解與抽象
C.與面向?qū)ο箝_(kāi)發(fā)方法相比,更適合于大規(guī)模、特別復(fù)雜的項(xiàng)目
D.特別適合于數(shù)據(jù)處理領(lǐng)域的項(xiàng)目
設(shè)∪表示集合的并運(yùn)算,∩表示集合的交運(yùn)算,A表示集合A的絕對(duì)補(bǔ),A-B表示集合A與B的差,則A-B=( )。
A、A∪(A∩B)
B、A∪B
C、A∩(A∪B)
D、A∩B
靜態(tài)圖像壓縮標(biāo)準(zhǔn)JPEG2000中使用的是( )算法。
A、K-L變換
B、離散正弦變換
C、離散余弦變換
D、離散小波變換
計(jì)算機(jī)中常采用原碼、反碼、補(bǔ)碼和移碼表示數(shù)據(jù),其中,±0 編碼相同的是( )。
A、原碼和補(bǔ)碼
B、反碼和補(bǔ)碼
C、補(bǔ)碼和移碼
D、原碼和移碼
以下關(guān)于CMM的敘述中,不正確的是()。
A.CMM是指軟件過(guò)程能力成熟度模型
B.CMM棍據(jù)軟件過(guò)程的不同成熟度劃分了5個(gè)等級(jí),其中,1級(jí)被認(rèn)為成熟度最高,5級(jí)被認(rèn)為成熟度最低
C.CMMI的任務(wù)是將已有的幾個(gè)CMM模型結(jié)合在一起,使之構(gòu)造成為“集成模型”
D.采用更成熟的CMM模型,一般來(lái)說(shuō)可以提高最終產(chǎn)品的質(zhì)量
Internet上的DNS服務(wù)器中保存有 ( ) 。
A、主機(jī)名
B、域名到IP地址的映射表
C、所有主機(jī)的MAC地址
D、路由表
UP(統(tǒng)一過(guò)程)是用例驅(qū)動(dòng)的、以架構(gòu)為核心、迭代和增量的軟件過(guò)程框架,它提供了一種 ( ) 的特性。
A、演進(jìn)
B、敏捷
C、測(cè)試驅(qū)動(dòng)
D、持續(xù)集成
In the fields of physical security and information security, access contro lis the selective restriction of access to a place orothe rresource. The act of accessing may mean consuming, entering, or using. Permission to access a resource is called authorization(授權(quán)).
An access control mechanism(1) between a user (or a process executing on behalf of a user) and system resources, such as applications,operating systems,firewalls,routers,files,and databases.The system must first a uthenticate(驗(yàn)證)a user seeking access.Typically the authentication function determines whether the user is(2 )to access the system at all. Then the access control function determines if the specific requested access by this user is permitteD. A security administrator maintains an authorization database that specifies what type of access to which resources is allowed for this user. The access control function consults this database to determine whether to(3 )access. An auditing function monitors and keeps a record of user accesses to system resources.
In practice,a number of(4 )may cooperatively share the access control function. All operating systems have at least arudimentary(基本的),and in many cases aquite robust,access control component.Add-on security packages can add to the(5 )access control capabilities of the OS. Particular applications orutilities, such as a database management system, also incorporate access control functions. External devices,such as firewalls, can also provide access control services.
(1)A.cooperates
B.coordinates
C.connects
D.mediates
(2)A.denied
B.permitted
C.prohibited
D.rejected
(3)A.open
B.monitor
C.grant
D.seek
(4)A.components
B.users
C.mechanisms
D.a(chǎn)lgorithms
(5)A.remote
B.native
C.controlled
D.Automated
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