[試題] 95下 蘇國棟 計算機概論 期中考
課程名稱︰計算機概論
課程性質︰大一必修
課程教師︰蘇國棟
開課學院：電資學院
開課系所︰電機系
考試日期（年月日）︰96/04/18
考試時限（分鐘）：120分鐘
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
試題附machine language的Op-code Operand和Descrption (the language description
table)
I. Choice Questions (30 pts, 2 pts per answer)
1. Which of the following bits patterns cannot be expressed in hexadecimal
notation?
(A) 11111111 (B) 1001 (C) 110011 (D) 100000000001
2. Which of the following representation in two's complement notation
represents the largest value?
(A) 00000010 (B) 11111111 (C) 00000001 (D) 11111110
3. Which of the follow bits patterns represents the samllest value using in
the floating-point format in which the most significant bit is the sign
bit, but the next three bits represent the exponent field in excess
notation, and the last four bits represent the mantissa?
(A) 01001000 (B) 01011000 (C) 00101000 (D) 01111000
4. How many errors per pattern could be corrected when using an
error-correcting code in which any two code patterns differ by a Hamming
distance of 8?
(A) 3 (B) 4 (C) 5 (D) 6
5. Which of the following instructions (as described in the language
description table) places 00000000 in register A?
(A) 1A00 (B) 2A00 (C) 3A00 (D) 200A
6. Which of the following is not an activity performed entirely within a
CPU?
(A) Fetch instructions (B) Perform Boolean operations
(C) Perform arithmetic operations (D) Move data between registers
7. What mask in register F would cause the instruction 7AAF (refer to the
language description table) to put a 1 in the most significant bit of
register A without disturbing the other bits?
(A) 11111110 (B) 00000001 (C) 10000000 (D) 01111111
8. Which of the following instructions (as described in the language
description table) is equivalent to requesting the register A be rotated
to the left by three bits?
(A) AA05 (B) AA03 (C) AA08 (D) AA01
9. Which of the following components of an operating system handles the
details associated the particular peripheral equipment?
(A) Decive drivers (B) File manager
(C) Memory manager (D) Task manager
10. Which of the following is a technique for controlling to critical regoin?
(A) Soopling (B) Time sharing (C)Semaphore (D) Booting
11. Which of the following would be a concern of the file manager in a
multi-user computer system that would not be a concren in a single-user
system?
(A) Maintain records regarding the location of files
(B) Maintain records regarding the ownership of files
(C) Maintain records regarding the sizes of files
(D) None of the above
12. Which of the following is not a way of classifying of network?
(A) WAN versus LAN (B) Closed versus open
(C) Router versus brigde (D) Star versus bus
13. Which of the following is a protocol for controlling the right to
transmit a message in a network?
(A) UDP (B) CSMA/CD (C) TCP (D) FTP
14. The primary purpose of which of the following in not the enhancement of
security?
(A) ICANN (B) Firewall (C) Encryption (D) CERT
15. Which of the layer of the TPC/IP hierarchy reassembles message as their
pieces arrive at the destination?
(A) Application (B) Transport (C) Network (D) Link
II. Fill-in-the-black (30pts, 3 pts per answer)
1. Express the bit pattern 0001001000001100 in dotted decimal natation
____________________
2. Fill in the blanks in the HTML document below so that the term "Earth"
will be linked to the document "earthinfo.html" in the directory
"earthdir" at "earthnews.com".
<html>
<head>
<title>Earth page</title>
</head>
<body>
<p>The planet we live on is called
________________________________ Earth ____________
</p>
</body>
</html>
3. Fill in the blanks below with the part on the operating system (file
manager, memory manager, device drivers, window manager, scheduler,
dispatcher) that performs the activity described.
A. _______________ Creates virtual memory
B. _______________ Performs the switching from one process to another
C. _______________ Maintains the directory system
4. The following table shows a portion of a machine's memory containing a
program written in the language described in the language description table.
Answer the questions below assuming that the machine is started with its
program counter containing 00.
address content address content
00 25 07 00
01 03 08 34
02 A5 09 04
03 02 0A B0
04 35 0B 03
05 03 0C C0
06 24 0D 00
A. What bit pattern will be in register 5 when the machine halts?
____________
B. What bit pattern will be in the program counter when the machine halts?
____________
C. What bit pattern will be at memory location 04 when the machine halts?
____________
5. What is the largest value that can be represented in a floating-point
system in which each value is encoded by a byte whose most significant bit is
the sign bit, the next three bits represent the exponent field in excess
notation, and the last four bits represent the mantissa?
____________
III. General Questions (40pts, 8 pts for each question)
1. 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)?
圖無法表示
2. The following is a routine encoded in the machine language described in
the language description table. Explain (in a single sentence) what the
routine does. (Explain what the entire routine does as a unit rather than
reciting what each instruction does.)
210F
12A0
8212
32A0
3. What is the difference between a conditional jump instruction and an
unconditional jump instruction?
4. What conditions are necessary for deadlock to occur?
5. What are some distinctions between UDP and TCP?
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