作者nihility7893 (千本樱)
看板NTU-Exam
标题[试题] 100上 林茂昭 错误更正码 小考
时间Tue Nov 15 19:59:45 2011
课程名称︰错误更正码
课程性质︰选修
课程教师︰林茂昭
开课学院:电资学院
开课系所︰电机所 电信所
考试日期(年月日)︰2011/10/12
考试时限(分钟):20分钟
是否需发放奖励金:是
(如未明确表示,则不予发放)
试题 :
Quiz on Error-Correcting Codes
October 12,2011
1.
Show that x^4 + x^3 + x^2 + x + 1 is irreducible over GF(2).(25%)
2.
Let α be a nonzero element of GF(2^8).Please find all the possible orders of
α.(25%)
3.
Let α be a primitive element of GF(2^11).Let f(X) be the minimal polynomial
of α^89 over GF(2). Please find all the roots of f(X).(25%)
4.
(a) Is GF(2) a subfield of GF(2^4)? (5%)
(b) Is GF(2^2) a subfield of GF(2^4)? (10%)
(c) Is GF(2^3) a subfield of GF(2^4)? (10%)
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