Question 1

The binary representation of decimal 42 is 00101010.

Accepted Answer

The binary representation of decimal 42 is indeed 00101010.

Question 2

The sum of the binary integers 01101101 and 00111011 is 10101001.

Accepted Answer

The sum of the binary integers 01101101 (109 in decimal) and 00111011 (59 in decimal) is 10011000 (168 in decimal), not 10101001.

Question 3

The hexadecimal representation of decimal 35 is 33h

Accepted Answer

The hexadecimal representation of decimal 35 is 23h, not 33h.

Question 4

The 8-bit two's complement of binary 00000010 is 11111110.

Accepted Answer

In two's complement, to negate a number, you invert all the bits and add 1. Inverting 00000010 gives 11111101, and adding 1 results in 11111110.

Question 5

The sum of all powers of 2 from 20 to 28 is 511.

Accepted Answer

The sum of all powers of 2 from 20 to 28 is 512, not 511.

Question 6

A compiler decodes and executes one program statement at a time.

Accepted Answer

A compiler translates the entire source code into machine code or executable code, and then the program is executed statement by statement by the computer's processor. It does not decode and execute one statement at a time. This process is performed by an interpreter.

Question 7

Suppose there is a virtual machine containing levels V1 and V2,where V2 is above V1 in the machine hierarchy.The programs written in language V2 can be executed by a program running at level V1.

Accepted Answer

The statement says that a program running at level V1 can execute programs written in language V2. This implies that V2 is compatible with V1 and that the necessary resources and functionality are available at V1 to execute V2 programs. Therefore, the statement is true.

Question 8

In any numbering system,the radix specifies the range of alphanumeric digits that can be assigned to a single digit position.

Accepted Answer

Radix, also known as base, determines the number of unique symbols or digits that can be used in a particular numbering system. For example, in the decimal system (base 10), the radix is 10 and the digits range from 0 to 9. In contrast, in binary system (base 2), the radix is 2 and the digits are only 0 and 1.

Question 9

A virtual machine may be constructed from software.

Accepted Answer

A virtual machine can be constructed using virtualization software, which creates a simulated computer environment that can run operating systems and software just like a physical computer.

Question 10

To translate an unsigned decimal integer into binary,repeatedly divide the integer by 2,saving each remainder as a binary digit.

Accepted Answer

This is the correct method to translate a decimal integer into binary. Each remainder after dividing by 2 will be a 0 or 1, which can be saved as a binary digit. The process is repeated until the quotient is 0.

Question 11

The sum of 3AB4h and 0429h is 3EDDh.

Accepted Answer

To verify, we can convert each hexadecimal number to binary and add them up:

3AB4h = 0011 1010 1011 0100
0429h = 0000 0100 0010 1001
--------------------------
3EDDh = 0011 1110 1101 1101

So the sum of 3AB4h and 0429h does indeed equal 3EDDh.

Question 12

A dynamic link library (DLL)is never written in the Java programming language.

Accepted Answer

DLLs are typically written in languages such as C, C++, or Assembly. Java uses its own mechanism for dynamic linking through its bytecode format and the Java Virtual Machine.

Question 13

A program that combines object files into an executable program is called a linker.

Accepted Answer

A linker is responsible for combining object files into an executable program.

Question 14

The binary representation of decimal -42 is 11010111.

Accepted Answer

The binary representation of decimal -42 is 11101010 using two's complement notation.

Quiz 1: Basic Concepts Assessment