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信息安全工程師每日一練試題內容(2018/4/26)
試題1: 計算機系統可維護性是指 ( ) 。
A、對系統進行故障檢測與修復的定期時間間隔的長度
B、系統失效后能被修復的概率
C、在單位時間內完成修復的概率
D、系統失效后在規(guī)定的時間內可修復到規(guī)定功能的能力
如果使用大量的連接請求攻擊計算機,使得所有可用的系統資源都被消耗殆盡,最終計算機無法再處理合法用戶的請求,這種手段屬于 ( ) 攻擊。
A、拒絕服務
B、口令入侵
C、網絡監(jiān)聽
D、IP 欺騙
設置計算機的無線網卡,使該計算機與實驗室的無線訪問點LabAP之間的通信能夠受密碼保護,指定密鑰為2350AD9FE0,則下圖中應設置 ( ) 。
A、SSID為LabAP,網絡驗證為開放式,數據加密為WEP
B、SSID為2350AD9FE0,網絡驗證為開放式,數據加密為WEP
C、SSID為LabAP,網絡驗證為WEP,數據加密為開放式
D、SSID為2350AD9FE0,網絡驗證為WEP,數據加密為開放式
某航空公司機票銷售系統有n個售票點,該系統為每個售票點創(chuàng)建一個進程Pi(i=1,2,…,n)管理機票銷售。假設Tj(j=1,2,…,m)單元存放某日某航班的機票剩余票數,Temp為Pi進程的臨時工作單元,x為某用戶的訂票張數。初始化時系統應將信號量S賦值為()。Pi進程的工作流程如下圖所示,若用P操作和V操作實現進程間的同步與互斥,則圖中空(a),空(b)和空(c)處應分別填入()。
(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.architecture 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.application logic
D.application 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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