99年身心障礙 計算機概要 - 考試

By Isabella
at 2013-06-19T14:25
at 2013-06-19T14:25
Table of Contents
[考題] 國考歷屆考題與考題觀念討論(書裡看到的選這個)請附上想法、出處
出處:如題
34.在開放系統互連(Open System Interconnection, OSI)參考模型之網路架構中,
下列何者不是傳輸層(transport layer)所負責的工作?
(A)編訂序號 (B)控制資料流量 (C)定址 (D)偵錯與錯誤處理
答案:(C)
疑問:請問傳輸層不是"服務存取定址的"功能嗎???
38 銀行資料庫中,描述客戶與帳戶存取交易之關係的邏輯設計包含客戶身分證字號、
帳戶存取記錄時間以及帳戶號碼。請問以下那一個為候選鍵值?
(A)客戶身分證字號
(B)(客戶身分證字號、帳戶存取記錄時間)
(C)帳戶號碼
(D)(客戶身分證字號、帳戶存取記錄時間、帳戶號碼)
答案:(D)
疑問:請問候選鍵不是要選唯一性且最小性,那為什麼答案不是(A) ???
--
出處:如題
34.在開放系統互連(Open System Interconnection, OSI)參考模型之網路架構中,
下列何者不是傳輸層(transport layer)所負責的工作?
(A)編訂序號 (B)控制資料流量 (C)定址 (D)偵錯與錯誤處理
答案:(C)
疑問:請問傳輸層不是"服務存取定址的"功能嗎???
38 銀行資料庫中,描述客戶與帳戶存取交易之關係的邏輯設計包含客戶身分證字號、
帳戶存取記錄時間以及帳戶號碼。請問以下那一個為候選鍵值?
(A)客戶身分證字號
(B)(客戶身分證字號、帳戶存取記錄時間)
(C)帳戶號碼
(D)(客戶身分證字號、帳戶存取記錄時間、帳戶號碼)
答案:(D)
疑問:請問候選鍵不是要選唯一性且最小性,那為什麼答案不是(A) ???
--
Tags:
考試
All Comments

By Susan
at 2013-06-23T23:39
at 2013-06-23T23:39

By Hardy
at 2013-06-25T20:35
at 2013-06-25T20:35

By Elizabeth
at 2013-06-26T16:06
at 2013-06-26T16:06

By Quintina
at 2013-07-01T13:43
at 2013-07-01T13:43

By Tristan Cohan
at 2013-07-04T22:39
at 2013-07-04T22:39

By Agatha
at 2013-07-08T18:18
at 2013-07-08T18:18

By James
at 2013-07-09T04:43
at 2013-07-09T04:43

By Poppy
at 2013-07-11T16:45
at 2013-07-11T16:45

By Dora
at 2013-07-13T17:29
at 2013-07-13T17:29

By Poppy
at 2013-07-18T04:31
at 2013-07-18T04:31

By Robert
at 2013-07-22T02:47
at 2013-07-22T02:47

By Frederic
at 2013-07-25T11:46
at 2013-07-25T11:46

By Isabella
at 2013-07-28T04:48
at 2013-07-28T04:48

By Eartha
at 2013-07-28T09:58
at 2013-07-28T09:58

By Frederica
at 2013-08-02T00:30
at 2013-08-02T00:30
Related Posts
有人參加今日港務公司口試嗎?

By Bennie
at 2013-06-19T13:13
at 2013-06-19T13:13
計概---硬碟讀取時間相關 [96關務]

By Donna
at 2013-06-19T11:27
at 2013-06-19T11:27
電子學OPA

By Edwina
at 2013-06-19T11:19
at 2013-06-19T11:19
電子學OPA

By Belly
at 2013-06-19T11:09
at 2013-06-19T11:09
計概---記憶體擊中率 [97原民]

By Daniel
at 2013-06-19T10:08
at 2013-06-19T10:08