JHPeng's Blog：宏觀篇。

考卷pdf：http://www.lib.ntu.edu.tw/exam/graduate/94/418.pdf

1.Which of the following software allows companies to provide a personalized touch and customized services to its customers?

下列哪個軟體可以讓公司提供的個性和客制化服務？

(A)customer relationship management
(B)consumer database management
(C)consumer feedback service
(D) consumer statistics software
(E) none of the above

藉由CRM(客戶關係管理)能了解不同客戶的需求特性,所以針對不同戶可給予不同的客製化服務。

2.The fundamental theory behind caching is

caching 的基本理論是

(A)a file that is not used often is likely to be used again
(B)a file that has recently been used is likely to be used again
(C)a file that has not been used for a long time is likely to be used again
(D)a file that has not been used for a long time is likely not to be used again
(E)a file that has recently been used is likely not to be used soon

caching(快取) :主要目的是將常用的資料予以擷取,下次需要用時即能從 cache中的區塊取出,加速資料存取時間。

3. Which of the following is correct about domain name?

下列各項當中哪一個關於網域名稱是正確的？

(A)the top-level domain "md" is created for medical information and centers
（錯，沒聽說有醫藥的網域）
(B) the top-level domain "tv" is created for broadcast stabons
（錯，吐瓦魯.TV）
(C)the top-level domain for commercial organizations is "org"
（錯，是.com）
(D) "biz" is a new top-level domain created for small business and individuals 
（錯，不是for small business and individuals，.biz是繼美國的.com後，第二個屬於商業(Business)用的網域名稱。）
(E) none of the above

4. Which of the following is wrong about emails?
(A)emails can deliver voice data （附件ok）
(B)emails can deliver execution files（附件ok）
(C)POP3 is a protocol for emails servers to deliver incoming emnils to their clients  ( pop3 郵件主機傳給client)
(D) current email systems use SMTP to deliver(遞送) emails in the Internet
(E)all of the above are correct (choose this one only if none of the above can be chosen)

5. Which of the following is a site that allows millions of volunteer peers to help processing radio telescope signals to search for extraterrestrial life ?
(A)www.nasa.org
(B)UFO@home
(C)www.ET.org
(D)SETI@home
(E)Folding@home

SETI@home的目的是要結合眾多電腦的力量來找尋外星球的生物存在 與否。

6. A software that enables professional designers in publishing business to create sophisticated documents that contain text, graphics, and many colors is
(A)Multimedia authoring tools
(B)CAD
(C)CBT
(D)WBT
(E)DTP

DTP(桌上排版工具)能用來鹽寓文件的內容(1列加入圖示說明) ,並能對文件做良好的版面排列。

7. Most web sites often have which place to help users find aswers to common questions
(A)distant learning
(B)wizard
(C)FAQ
(D)Online help
(E)Newsgroup

FAQ:簡單來說就是常見問題及回覆。於網頁中時常會提供FAQ讓使用者可以找到常見(或一般性)問題的解決之道。

8. Taiwan's PC industry has taken a majority share of the world market in most PC components except
(A)motherboard （奇美，台灣的公司）
(B)hard drivers （全球前3大硬碟供應商是Seagate、Maxtor、日立。關鍵技術仍由美系廠商寡佔）
(C)power supplies （台達電，目前是世界第一大電源供應器公司）
(D)keyboards and mouse （199台製鍵盤滑鼠）
(E) network cards （199台製網卡）

9. Which of the following is wrong?
(A)current CPUs have clock speed around 3GHz （差不多但改走多核）
(B)current hard disks have capacity around 120GB （250G）
(C)current memory installed in home PCs is around 256-512MB  （1G）
(D)current flash memory has size around 256-512MB （1G-2G）
(E)all of the above are correct (choose this one only if none of the above can be chosen)

本題已不合時宜。

10.An opening inside a computer system in which you can install additional equipment is called

在電腦系統裡面的 你能讓你安裝額外的設備的 叫做

(A)draw
(B)slot （擴充槽）
(C)socket
(D)bay
(E) none of the above

Slot擴充槽是PC安裝介面卡的插槽，例如VGA卡、MGP卡、音效卡、網路卡…等，其種類依主機板的規格，有下列幾種：

• ISA卡：早先286的主機板只有ISA slot的架構，主機板與介面卡的傳輸速度為8MHz，採8/16位元，其外表多為黑色。
• VESA卡：在ISA Slot下面多出三根約8公分長的VESA Slot，並與ISA Slot合併使用，其外表為咖啡色。
• PCI卡：PCI介面的主機板，會多出有3-5個白色的插槽，由Intel發起的PCI介面能充分支援Pentium 64位元的CPU。

11.A smart phone typically has the following capabilities except
(A)Web-enabled
(B)send and receive emails
(C) built-in camera
(D)play music
(E)all of the above functions are included (choose this one only if none of the above can be chosen)

智慧型手機會有上述的所有特性。

12. Which of the following device in digital camera senses analog image signals and then coverts them to digital?
(A)DSP 
(B) zoom
(C)DAD
(D)CCD
(E)DA

CCD使數位相機能將類比訊號轉為數位訊號。

13. The process of scrambling messages AO that the original messages cannot be revealed unless some given key is used is called

擾亂訊息的過程AO   原始訊息不可能顯示，除非使用某一特定鑰匙叫

(A) decryption 解密
(B)encryption . 加密
(C)coding 編碼
(D)compression 壓縮
(E) decoding 解碼

14. The storage term that refers to 2^40 bytes is
(A) Gigabyte
(B)Terabyte
(C)Petabyte
(D)Exabyte
(E) none of the above

解：1TB = 210GB = 220MB = 230KB = 240B (Bytes)

15. The smallest data block on the surface of a hard disk or floppy disk that is accessed as a unit per request is

硬碟表面或磁片的最小的資料區單位是

(A)sector
(B) track
(C)cylinder
(D)packet
(E)cluster

一個sector(磁區)為floppy(磁片)的基本存放單位。

16. Which of the following can most effectively improve disk access time
(A)add more plates
(B) enlarge disk surface
(C) add disk cache
(D)enlarge sector size
(E)increase number of sectors per track

資料在disk cache中時,不需再去scan disk的其它區塊即可存取,所以速度很快。因此disk cache size加大對存取效率之提供很顯著。

17.A feature that allows an operating system to interrupt an executing program and pass control to another is
(A)preemptive multitasking
(B)priority multitasking 
(C)pipeline multitasking
(D)fault-tolerant multitasking
(E)none of the above

preemptive multitasking(強取式多工系統) : 意指程式執行時,系統能讓優先權更高的process迫使執行中的程式 放棄CPU,進而將CPU切換給此process。

18. The largest program that can be executed in current Intel Pentium 4- based PCs is

在當前英特爾Pentium 4的個人電腦 可以被執行的最大的項目 是

(A)1GB
(B) 4GB  
(C) 32GB
(D) 64GB
(E)none of the above

19. The technique that allows a computer with small RAM to execute a program of much bigger size is (A)paging . (D)virtual memory (E) none of the above

Virtual Memory(虛擬記憶體) : 係指利用輔助儲存設備(例: disk)來虛擬成記憶體,如此就可以執行比實際記憶體容量大的程式。

20. Which of the following is wrong about the paging technique in operating systems?
(A) a large page may result in waste of memory and storage （正確，page太大可能會導致浪費內存和存儲）
(B) a small page may result in waste of CPU time in page swap （正確，page太小會浪費cpu時間在page swap）
(C) executing too many programs simultaneously may result in thrashing （正確，同時地執行太多programs 可能造成失敗）
(D)the area of the hard disk used for virtual memory is called a swap file（正確，硬碟中  當作為虛擬記憶的  稱為 swap檔）
(E) all of the above are correct (choose this one only if none of the above applies)

上述的(A)(B)(C)(D)皆為o.s.之特性。

21. Which ofthe following is wrong?

(A)fragmentation is caused by many write and delete operations to a disk （正確，磁碟碎片 是 常常對硬碟作 寫入和刪除 動作 所造成的）
(B)read operations alone cannot cause fragmentation
（正確，讀取操作的本身並不能造成 磁碟碎片）
(C)de-fragmentation tries to organize file blocks in contiguous sectors
（正確，de-fragmentation 試著在 鄰近的磁區中 重組 檔案區段）
(D) fragmentation is not possible if all files have the same size （fragmentation 是不可能的，如果所有的檔案有相同的大小）
(E)all of the above are correct (choose this one only if none of the above applies)

就算全部的檔案大小都一樣,但由於採行不相同的記憶體配置策略,還是可能產生fragmentation(零碎)的現象。

22. GPRS is a technology used in (A)1G (B)2G (C)3G (D)4G (E)none of the above

GPRS是用於2.5G, GSM才是2G系統 。

.23. Which of the following is wrong? .
(A) Ethernet uses bus topology·
(B)Ring topology is used primarily for LANs
(C)in Buse network, the failure of one device will affect the function of the entire network
(D) when network traffic is very high, the performance of Ethernet networks drops significantly as compared to ring networks
(E) none of the above

24. Which oftm following databases store data in a table that consists of rows and columns? (A)relational (B)object-oriented (C)multidimensional (D)network I (E) none of the above

25. A specific pattern of virus code that can be used to detect the virus is called (A)virus form "' (B)virus signature (C)virus ID  (D)virus sign (E)none of the above

26. Web sites can use cookies in the following ways except (A) track user preferences . (B) automatically login a user into a Web site when the user visits the site (C)keep track of a user's shopping cart (D)tt'l\ck how regularly users visit a site and the Web pages they visit while at the site (E) all the above can be done by cookies

27.A program placed on a computer without the user's knowledge that secretly collects information about the user is (A)adware (B)spyware (C)virus  (D)wonn (E)ockies

28. Which of the following system conversions first installs the new system in only one location in the company, tests it, and when the test is approved, it is then deployed to the other sites of the company? (A) direct (B)parallel· (C)phased (D) pilot (E)site transitional

29. A computer that a hacker uses to execute a denial of service attack or distributed denial of service attack without the legitimate user's knowledge is (A)Zombie . (B)Trojan (C) Boogie (D) worm (E)Sobig

30. Huge database system that stores and manages data required to analyze historical and current transactions is (A)data mart (B)data house (C) data warehouse (D)data mining (E)none of the above

31. The family of communication standards for wireless LANs is (A)802.1l (B)TCP/IP (C)Bluetooth (D)GSM (E) W AP .

32. Which of the following is wrong? (A)RFID is considered as an alternative to bar code (B)RFID can be used to track the number of customers in  shopping mall (C)HFID can be used to track payment as vehicles pass through booths on tollway systems (D)RFID can be used in POS system (E) all of the above are correct (choose this one only if none of the above applies)

33. Which of the following is wrong about TCP?
(A) it is connection-oriented (B)it stands for Transmission Control Protocol (C) it has flow control (D)HTTP, FTP, and Telnet are all based on TCP (E) all of the above are correct (choose this one only if none of the above applies)

34. Which of the following is wrong? (A) IP v4 uses 32-bits address mode (B)IP v6 uses 128-bit address space (C) currently the number of hosts that need to be addressed in the Internet has already exceeded 232 (D)a class C subnet in IP v4 contains 256 hosts (E) all of the above are correct (choose this one only if none of the above applies)

35. Which of the following is wrong? (A) NAT (Network Address Translation) allows multiple hosts to share an external IP simultaneously (B)DHCP allows multiple devices to share multiple IPs dynamically (C) NAT provides a type of firewall (D)DHCP also provides a type of firewall (E) all of the above are correct (choose this one only if none of the · above applies)

36. A technology that enables one network to send its data via another network's connections, typically by encapsulating a network protocol within packets carried by the second network is (A) tunneling (B)VPN (C)IP in IP (D)Payload carrier (E) Layer Two Forwarding

37. Which of the following is not defined in the Internet Protocol Suite? (A) application layer (B) session layer (C)netwOl'k layer (D) transport layer (E) link layer

38. Standard Ethernet networks use to physically monitor the traffic on the line at participating stations in transmission. (A)CSMA (B)CSMAlCA (C)CMSAJCD (D)CDMA (E)CSCAIMA

39. Which of the following property says that all operations of a transaction be completed or else the transaction should be aborted (A)isolation (B) atomicity (C) durability (D)sorializability (E) singleton

40. The objective of is to ensure the serializability of transactions in a multi-user database enVlronment (A)concurrency control (B) atomicity control (C)integrity control (D)sequential control (E)parallel control

41. Which of the following normal forms requires that every nonprime attribute A in a relc.tion R is fully dependent on the primary key of R? (A) first (B) second . (C)third (D)fourth (E)BCNF

42. Deadlock in database object locking scheme can be prevented by (A) not allowing a transaction to lock an object once it has released some lock (B) a transaction cannot release locks until it has completed (C) allowing read locks to be shared among transactions (D) allowing objects to be locked only in some predefined order (E) none of the above

43. In object.oriented design, ______hides the data representation and the method's implementation from other objects and the user A)cncapsulation ( B)abstraction ,(C)inheritance . (D)data hiding (E)data wrapping

44. Two-Phase locking guarantees (A) deadlock free (B)data integrity (C) durability (D)serializability (E) none of the above

45. Which of the following techniques employs two or more hard disk drives in combination for fault tolerance and performance? (A)EMC (B)RAlD (C)RIDA (D) disk striping (E)none of the above

46. Which of the following databases is more appropriate for multimedia objects? (A)relational database (B)object-oriented database (C)hierarchical database (D)network database (E) none of the above

多媒體型式的資料適合以OODB(Object Oriented Database)物件導向 資料庫來存放。

47. Which of tho following three languages are object-oriented: C, C++, Java? (A)all of them (B)only C++ (C)only C and C++ (D)only C++ and Java (E)none of the above is correct

C語言非物件導向語言,其為結構化程式語言。而c++、JAVA即為物件 導向語言。

48. Which of the following allows Web documents designers to create their own customized tags, enabling the definition, transmission, validation, and interpretation of data between applications and between organizations? (A)HTML (B)SGML (C)XML (D)JXTA (E)UML

XML的tag(標籤)是可以自行定義

49. The frequency Bluetooth uses is (A)900 MHz (B) 1800 MHz (C)2.4 GHz (D)4.8 GHz (E)5.4 GHz

有許多的技術都用於24GHz的頻帶上,例: Bluetooth、802.11g、 802.11b等。

50. Sorting an array of N elements typically requires time at 1east in · the order of (A)log N (B)N (C)N log N (D) N 2 (E)N log log N