Fundamentals of Computer Science. TEST

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FUNDAMENTALS OF INFORMATICS Total 34 missions!

Exercise 1

Question 1. In what form is informed PC (personal computer)?

1 in the form of digital signals (digital computer);

2 in the form of continuous signals (analog computer);

3 mainly in the form of digital signals, and sometimes - a continuous signal;

4 mainly in the form of continuous signals, and sometimes - in the form of discrete signals

• there is no right answer.

Question 2. What is a bit?

• The bit can take on any value;
• The bit is the basic unit of information is the number of bits of value 1;
• bit - is the basic unit of information is the bit value of 0;
• The bit - is the basic unit of information, the value of the bit is an octal number 2;
• bit - is the basic unit of information is the bit value of 0 or 1.

Question 3. To measure the use of large volumes of information units such as kilobytes, megabytes, gigabytes. What is the kilobyte?

• 1 Kilobyte = 1000 bytes, or 103 bytes;
• 1 Kilobyte = 1,000,000 bytes, or 106 bytes;
• 1 Kilobyte = 1,000,000,000 bytes, and 109 bytes;
• 1 Kilobyte = 1024 bytes, or 210 bytes;
• 1 Kilobyte = 1,048,576 bytes, or 220 bytes.

Question 4: What is the difference from one another decimal, binary, octal and hexadecimal number system?

• Based on these number systems are respectively numbers 10, 2, 8, 16 used the numbers from 0 to 9 When writing numbers in the decimal system; in binary number written in any form of a sequence of 0 and 1; octal numbers are used to record the numbers from 0 to 7; hexadecimal number, you can record with 16 characters - digits from 0 to 9 and Latin letters from A to F;
• The grounds of the number systems are respectively numbers 10, 2, 8, 16. When writing numbers in the decimal system uses numbers from 0 to 10; in binary number written in any form of a sequence of 0 and 1; octal numbers are used to record the numbers from 0 to 8; hexadecimal number, you can record the numbers from 0 to 16.
• Based on these number systems are respectively numbers 10, 2, 8, 16. When writing numbers in the decimal system uses numbers from 0 to 8; in binary number written in any form of a sequence of 0 and 1; octal numbers are used to record the numbers from 0 to 10; hexadecimal number, you can record the numbers from 0 to 16.
• Based on these number systems are respectively numbers 10, 2, 8, 16 used the numbers from 0 to 9 When writing numbers in the decimal system; in binary number written in any form of a sequence of 0 and 1; octal numbers are used to record the numbers from 0 to 8; hexadecimal number system can record the numbers from 0 to 17. In computing it is only the decimal number system.
• Based on these number systems are respectively numbers 10, 2, 8, 16. When writing numbers in the decimal system uses numbers from 0 to 9; in binary number written in any form of a sequence of 0 and 1; octal numbers are used to record the numbers from 0 to 8; hexadecimal number, you can record the numbers from 0 to 16.

Question 5: Decimal number 30 written in binary notation as:

• 10011;
• 11110;
• 10101;
• 100111;
• 100001.

Task 2