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信息安全工程師每日一練試題內(nèi)容(2018/4/26)
試題1: 計(jì)算機(jī)系統(tǒng)可維護(hù)性是指 ( ) 。
A、對(duì)系統(tǒng)進(jìn)行故障檢測(cè)與修復(fù)的定期時(shí)間間隔的長(zhǎng)度
B、系統(tǒng)失效后能被修復(fù)的概率
C、在單位時(shí)間內(nèi)完成修復(fù)的概率
D、系統(tǒng)失效后在規(guī)定的時(shí)間內(nèi)可修復(fù)到規(guī)定功能的能力
如果使用大量的連接請(qǐng)求攻擊計(jì)算機(jī),使得所有可用的系統(tǒng)資源都被消耗殆盡,最終計(jì)算機(jī)無(wú)法再處理合法用戶的請(qǐng)求,這種手段屬于 ( ) 攻擊。
A、拒絕服務(wù)
B、口令入侵
C、網(wǎng)絡(luò)監(jiān)聽(tīng)
D、IP 欺騙
設(shè)置計(jì)算機(jī)的無(wú)線網(wǎng)卡,使該計(jì)算機(jī)與實(shí)驗(yàn)室的無(wú)線訪問(wèn)點(diǎn)LabAP之間的通信能夠受密碼保護(hù),指定密鑰為2350AD9FE0,則下圖中應(yīng)設(shè)置 ( ) 。
A、SSID為L(zhǎng)abAP,網(wǎng)絡(luò)驗(yàn)證為開(kāi)放式,數(shù)據(jù)加密為WEP
B、SSID為2350AD9FE0,網(wǎng)絡(luò)驗(yàn)證為開(kāi)放式,數(shù)據(jù)加密為WEP
C、SSID為L(zhǎng)abAP,網(wǎng)絡(luò)驗(yàn)證為WEP,數(shù)據(jù)加密為開(kāi)放式
D、SSID為2350AD9FE0,網(wǎng)絡(luò)驗(yàn)證為WEP,數(shù)據(jù)加密為開(kāi)放式
某航空公司機(jī)票銷售系統(tǒng)有n個(gè)售票點(diǎn),該系統(tǒng)為每個(gè)售票點(diǎn)創(chuàng)建一個(gè)進(jìn)程Pi(i=1,2,…,n)管理機(jī)票銷售。假設(shè)Tj(j=1,2,…,m)單元存放某日某航班的機(jī)票剩余票數(shù),Temp為Pi進(jìn)程的臨時(shí)工作單元,x為某用戶的訂票張數(shù)。初始化時(shí)系統(tǒng)應(yīng)將信號(hào)量S賦值為()。Pi進(jìn)程的工作流程如下圖所示,若用P操作和V操作實(shí)現(xiàn)進(jìn)程間的同步與互斥,則圖中空(a),空(b)和空(c)處應(yīng)分別填入()。
(1)A.0
B.1
C.2
D.3
(2)A.P(S),V(S)和V(S)
B.P(S),P(S)和V(S)
C.V(S),P(S)和P(S)
D.V(S),V(S)和P(S)
The objective of ()is to determine what parts of the application software will be assigned to what hardware.The major software components of the system being developed have to be identified and then allocated to the various hardware components on which the system will operate. All software systems can be divided into four basic functions. The first is(). Most information systems require data to be stored and retrieved,whether a small file,such as a memo produced by a word processor,or a large database,such as one that stores an organization’s accounting records. The second function is the (),the processing required to access data,which often means database queries in Structured Query Language. The third function is the (),which is the logic documented in the DFDs,use cases,and functional requirements.The fourth function is the presentation logic,the display of information to the user and the acceptance of the user’s commands.The three primary hardware components of a system are ().
A.a(chǎn)rchitecture design
B.modular design
C.physical design
D.distribution design
A.data access components
B.database management system
C.data storage
D.data entities
A.data persistence
B.data access objects
C.database connection
D.dataaccess logic
A.system requirements
B.system architecture
C.a(chǎn)pplication logic
D.a(chǎn)pplication program
A.computers,cables and network
B.clients,servers,and network
C.CPUs,memories and I/O devices
D.CPUs,hard disks and I/O devices
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