IRDO

Question 1

t or f: Data is the manifestation and carrier of information, and information is the connotation of data. Information is meaningful, while data is meaningless.

Answer 1

true

Question 2

t or f: Hexadecimal is a common base system inside the computer, which can make up for the shortage of long writing digits of binary.

Answer 2

true

Question 3

t or f: In the computer, all information must be digitized into data before it can be stored, processed and transmitted.

Answer 3

true

Question 4

t or f: It is forbidden to use lossy compression method to compress data, because it will make the original data unrecoverable.

Answer 4

false

Question 5

t or f: Data organization refers to organizing data with a certain logical relationship and configuring it in the memory of the computer according to a certain storage representation, so that the computer can meet the requirements of fast processing speed, less memory capacity and low cost.

Answer 5

true

Question 6

t or f: In the queue, the end performing the insertion operation is called the queue head, and the end performing the deletion operation is called the queue tail.

Answer 6

false

Question 7

t or f: Message digest refers to that messages (files) of any length can be converted into hash values of fixed length by means of hash function, and the original information can be inferred from the message digest.

Answer 7

false

Question 8

t or f: HDFS is an abbreviation of Hadoop Distributed File System, which can realize the distributed storage of files on multiple hosts through the network.

Answer 8

true

Question 9

t or f: In asymmetric cryptosystem, the private key is used to verify the signature.

Answer 9

false

Question 10

t or f: In asymmetric cryptosystem, the encryption and decryption keys are the same, and the key distribution management is simple.

Answer 10

false

Question 11

single: Which of the following descriptions of information and data is wrong?

Answer 11

Usually, information and data are strictly distinguished.

Question 12

single: Which of the following descriptions about reasons for the use of binary in computer system is wrong?

Answer 12

It is different from the decimal system used in daily life.

Question 13

single: Which of the following is the correct description of the sequence of image digitization process?

Answer 13

image sampling quantization coding digital signal

Question 14

single: Which of the following descriptions about images is wrong?

Answer 14

In black-and-white images, 0 represents pure white and 1 represents pure black

Question 15

single: If the input sequence of a stack is a, b, c, d, which of the following cannot be the output sequence of the stack?

Answer 15

c，a，b，d

Question 16

single: Which of the following is the location where the stack is inserted and deleted?

Answer 16

stack top

Question 17

single: If it is known that the input sequence of a stack is 1, 2, 3,… n, and its output sequence is a1, a2, a3,…, an, if a1 = n, which of the following options is ai?

Answer 17

n-i+1

Question 18

single: To design an algorithm to judge whether the left and right parentheses in the expression are paired, which of the following data structures is the best solution?

Answer 18

stack

Question 19

single: Which of the following descriptions about the common points between stack and queue is correct?

Answer 19

insert and delete elements at the endpoint

Question 20

single: Which of the following options is the purpose of data encryption?

Answer 20

protect data content

Question 21

single: In order to solve the speed mismatch between the computer and the printer, a print data buffer is usually set. The host writes the data to be printed into the buffer in turn, queue up for printing, and the printer reads the data from the buffer in turn and prints. Which of the following is the logical structure of the buffer?

Answer 21

queue

Question 22

single: Which of the following descriptions about the characteristics of big data is wrong?

Answer 22

high value density of data

Question 23

single: Which of the following descriptions of the data storage structure is wrong?

Answer 23

In computer, the storage structure of data is expressed by linear structure.

Question 24

single: Which of the following options controls the process of data encryption and decryption?

Answer 24

key

Question 25

single: Which of the following is not a performance indicator of information compression technology?

Answer 25

total compressed information

Question 26

multiple: Which of the following options are coding methods?

Answer 26

all are correct answers

Question 27

multiple: Which of the following description of digital signature are wrong?

Answer 27

• RSA algorithm cannot implement digital signature.
• Digital signature is the digital image of handwritten signature.
• Only the recipient can use the private key.

Question 28

multiple: Which of the following data structures belong to nonlinear data structures?

Answer 28

graph

binary tree

Question 29

multiple: What are the correct items in the following description of stack application scenarios?

Answer 29

recursive call
function call
expression evaluation

Question 30

multiple: In the following description of data encryption, which items are wrong?

Answer 30

• The original data that needs to be encrypted is called ciphertext.
• In asymmetric cryptosystem, the public key is generally used for decryption and the private key is used for encryption.