課程名稱︰計算機概論 課程性質︰必修 課程教師︰黃鼎偉 開課學院：電資學院 開課系所︰電機系一年級 考試日期（年月日）︰2009 4/15 考試時限（分鐘）：兩節課 110分鐘 是否需發放獎勵金：是 （如未明確表示，則不予發放） 試題 : 14.Using a two's complement notation system in which each value is represented by a pattern of six bits, represent the value -3. A.110101 B.111001 C.111101 D.000011 15.The following are messages that were originally encoded with the same rule of parity. Which one has definitely error? A.10110101 B.11110000 C.10010000 D.00000000 16.If the input and output bit patterns in the circuit below are interpreted as binary representations of numeric values, what operation does the circuit perform? (except for the case of the input being 000) A.The circuit subtracts one. B.The circuit adds one. 不會畫圖... C.The circuit AND with 001. D.The circuit OR with 001. 17.Which of the following events is detrimental to an operating system's performance? A.Deadlock B.Interrupt C.Booting D.Spooling 18.Which of the following is a technique for controlling access to a critical region? A.Spooling B.Time sharing C.Semaphore D.Booting 19.Which of the following is not a means of obtaining a form of multitasking? A.Pipelining B.Time sharing C.Virtual memory D.Multiple processors 20.Multitasking in a computer with only one CPU is accomplished by a technique called A.Bootstrapping B.Batch processing C.Time sharing 21.A section of a program that should be executed by at most one process at a time is called a A.Utility B.Critical region C.Privileged instruction D.Interrupt 22.Which of the following is a task that is not performed by the kernel of an operating system? A.Communicate with the user B.Schedule processes C.Allocate resources D.Avoid deadlock 23.Ethernet is a means of implementing which of the following network topologies? A.star B.Ring C.Bus D.Tree 24.Which of the following identifies the application to which a message arriving from the Internet should be given? A.Protocol B.Port number C.Domain D.Hop count 25.The primary purpose of which of the following is not the enhancement of security? A.CERT B.Firewall C.Encryption D.ICANN 26.Which of the following is not a means of implementing server-side activities? A.CGI B.JSP C.ASP D.Applets 27.Which of the following set of instructions defines an algorithm in the formal, strict sense? A.X←3 B.X←3 C.X←3 while(X<5)do while(X<5)do while(X<5)do (X←X) (X←X+1) (X←X-1) 28.Which layer of the TCP/IP hierarchy reassembles messages as their pieces arrive at the destination? A.Application B.Transport C.Network D.Link 29.Which of the following is not a protocol used in the basic TCP/IP software hierarchy? A.POP3 B.UDP C.TCP D.IP 30.If it takes one microsecond to perform a context switch and processes use only half of their allotted 10 millisecond time slices, what percent of a CPUs time is spent performing context switches rather than executing processes? A.2% B.0.2% C.0.01% D.0.02% (註:以下配合題) 31.In the following table, connect the term to each phrase that gives the best description of the term (40%) Term DMA ___ floating-point notation ___ shell ___ Ethernet ___ router ___ virtual memory ___ CISC ___ kernel ___ IP address ___ pseudocode ___ op-code ___ pipelining ___ flip-flop ___ register ___ privilege levels ___ bootstrap ___ packet ___ firewall ___ Unicode ___ ASCII ___ Descriptive Phrase A.A digital circuit capable of holding a single digit B.A means of encoding text in which each symbol is represented by 16 bits C.An informal notation for representing algorithms D.A system developed by the American Standards Institude for encoding text E.A means of encoding numeric values that may involve fractions F.A means of processing more than one instruction at a time G.The ability of a peripheral device to communicated directly with a computer's main memory H.A computer whose machine language contains many complex instructions I.A location within a CPU for temporary data storage J.The part of a machine instruction that identifies the basic operation to be performed K.The program first executed when a computer is turned on L.The heart of an operating system M.The part of an operating system that communicates with the user N.Extended storage space created by the memory manager O.Identifies a machine on the Internet P.A means of blocking undesired messages Q.A message segment that is transmitted over the Internet independently R.A means of connecting networks to form an internet S.A means of implementing a network with the bus topology T.A means of restricting the capabilities of different processes 參考答案 選擇題 BBACA DADDD CCBCA AACCC BACBD DBBAD 配合題 GEMSR NHLOC JFAIT KQPBD -- --

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