University Information Technology Foundation (Fujian Agriculture and Forestry University) Chapter 2023 The exam answers are super-star-like (I)
1.6 unit 1 test
1, multiple-choice question, please judge that the logic value of Q output is () according to the following logic gate circuit.
Answer, 0
b、 1
c、00
d、 1 1
My answer: B.
2. Multiple choice questions have a binary source symbol, and the probability of 0 and 1 are P(0) and P( 1) respectively. When the probability of () appears, the entropy of the source reaches the maximum.
a、P(0)P( 1)
b、P(0)P( 1)
c、P(0)=P( 1)
D, uncertain
My answer: C.
3. Multiple-choice questions The ancients carved words and symbols on tortoise shells for future generations, which mainly reflected the () in the information characteristics.
First, carrier dependence
B, timeliness
C, authenticity
D, machinability
My answer: a.
4, multiple-choice questions in the following different decimals, the largest number is ().
I. Binary number 100
B, decimal number 100
C, hexadecimal number 100
D, binary number 1 1 1
My answer: C.
5. Multiple-choice questions throw a pair of even dice at the same time, and the information content of the event with 2 and 6 points is about () bits.
A、
B,
C,
d、
My answer: B.
6. Multiple choice questions () are three resources that modern society mainly relies on.
I. Information, matter and energy
Air, oil, food
C, consciousness, matter, energy
D. information, materials and knowledge
My answer: a.
7, multiple-choice questions about ASCII code, the following statement is correct ().
First, the meaning of ASCII code is the international standard information interchange code.
B ASCII code uses the specified combination of 7-bit or 8-bit binary numbers to represent 128 or 256 possible characters.
C. The latest extended ASCII coding scheme includes Chinese character coding.
D, China, Japan and Korea hieroglyphs can also be expressed in ASCII code.
My answer: B.
8. There are 1 red balls and 7 white balls in the multiple-choice bag. Feel free to pull out a ball from the bag, and the information of the event of touching the red ball is ().
a、 1
July 8 th
c、 1/8
d、3
My answer: D.
9. The story about Jiang Gan stealing books in the Romance of the Three Kingdoms multiple-choice question says: In Battle of Red Cliffs, Jiang Gan stole the forged surrender books of Cai Mao and Zhang Yun from Zhou Yu and gave them to Cao Cao. As a result, Cao Cao beheaded them, causing Cao Cao to lose the only general of the water army, and finally burned the three armies. This story shows that the information has ().
I. * * * Enjoy
B, timeliness
C, authenticity
D, value
My answer: C.
10, if the switch is closed, the light bulb lights up. If the condition is true, the light bulb lighting condition in the following figure can be expressed as ().
A, A and B
B, a or b
C, a is not B.
d，a xor b
My answer: a.
1 1, multiple-choice questions are divided into four messages, A, B, C and D, which are transmitted with the probability of 1/4, 1/8, 1/2, and the average information content of the source is ().
a、 1
b、 1.5
c、 1.75
d、2
My answer: C.
12, multiple-choice questions about Shannon's information measurement formula, the following statement is correct ().
A, it only applies to random uncertain events.
B, applicable to deterministic events.
C, suitable for semantic information measurement.
D, none of the above answers are correct
My answer: a.
13, multiple-choice questions about Chinese information processing, the following statement is correct ().
First, Chinese information uses ASCII code in the computer.