作者dasea2008 (own house engineering)
看板ncyu_phyedu
标题[讨论] im 98
时间Thu Jan 20 13:55:20 2011
国立嘉义大学九十八学年度
资讯管理学系硕士班招生考试试题
科目：计算机概论
1. Please briefly describe the function of virtual memory? (5 %)
2. Please briefly describe what means a program is I/O bound? (5 %)
3. Please briefly describe why most PCs adopt DRAM instead of SRAM as their
main memory. (5 %)
4. Please briefly describe why single-job processing makes inefficient use of
computer resources?(5% )
5. Please briefly describe the objective of blocking. (5 %)
6. Please briefly describe the difference between CPU registers and Cache. (5
%)
7. Assume that a variable A is a signed 2-byte short integer and A = 32767.
What will be the value of A after executing A = A + 1. (5 %)
8. Below is a program coded by C language, please answer the following
questions:
#include <stdio.h>
main()
{
int i, j, n, k = 0;
for (i = 1; i <= n; i++)
for (j = 1; j <= i; j++)
++k;
printf(“%d\n”, k);
}
(1) After executing this program, what will be the value of variable k as n
= 100? (5 %)
(2) What is the time complexity of this program? (5 %)
(3) Please improve this program to make its time complexity be O(1). (5 %)
9. Please explain what differences between “unicast”, “multicast”, and “
anycast” are. (5 %)
10. Please briefly illustrate the major features of the “Beyond 3G”. (5 %)
11. Please briefly describe what “Thread” is. (5 %)
12. Consider the following set of processes, with the length of the
CPU-burst time given in milliseconds
Process Name Arrival Time CPU-Burst Time Priority
1 0 4 3
2 1 6 2
3 3 4 1
4 5 8 5
5 8 5 4
(1) Draw four Gantt charts that illustrate the execution of these processes
using FCFS, preemptive SJF, a preemptive priority (a smaller priority
number implies a higher priority), and RR (quantum=2) scheduling. (8 %)
(2) Which of the schedulers in Part A results in the minimal average waiting
time (over all processes)? (2 %)
13. Please illustrate what is different between three broad categories of WWW
document: static, dynamic and active. (5 %)
14. Please give briefly comparisons between CISC (complex instruction set
computer) and RISC
(reduced instruction set computer). (5 %)
15. Please briefly describe the main idea behind the MP3 standard for
compressing audio. (5 %)
16. Please briefly distinguish between symmetric-key cryptography and
asymmetric-key
cryptography. (5 %)
17. Suppose that we want to make use of all spaces in queue. Please show
your solution to conquer one
space could not be used with empty and full distinguishing problem. (5 %)
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