Worksheetschapter 3 76
Total questions: 76
Worksheet time: 38mins
The decimal number -127(10) corresponds to which of the following signed, 8-bit binary numbers (2's complement):
Cannot be represented
1000 0001(2)
1000000(2)
1111 1111(2)
In the hexadecimal numbering system, the number 5CD7(16) corresponds to which of the following decimal values:
23511(10)
23767(10)
23719(10)
23725(10)
Binary number 1100 1011 1101(2) corresponds to which of the following hexadecimal values:
DBC(16)
CDB(16)
CBD(16)
BDC(16)
The sum of two 8-bit unsigned binary numbers 0101 0101(2) and 0110 1001(2) is:
1011 1010(2)
1010 1000(2)
1011 1110(2)
1001 1000(2)
In 80-bit floating-point representation, how many bits are allocated for the exponent?
14 bit
13 bit
16 bit
15 bit
According to IEEE 754/1985, the extended double-precision floating-point format has a total length
80 bit
64 bit
32 bit
16 bit
`The extended ASCII code contains how many characters?
256
512
1024
128
In computer data transmission systems, based on function, buses are divided into:
Data bus, address bus, multifunctional bus
Parallel bus, serial bus, semi-serial bus
CPU internal bus, main memory bus, I/O bus
Data bus, address bus, control bus
What is the decimal equivalent of the binary number 1101 0011 1101(2)?
3397(10)
3395(10)
3389(10)
3373(10)
The binary number 11001.101(2) is equal to which of the following decimal values?
25.375
25.625
25.750
25.875
What is the binary representation of the decimal number 157(10)?
10011101(2)
10111101(2)
10001101(2)
100011111(2)
What is the binary representation of the decimal number 222.5(10)?
11011110.1001(2)
11011010.1000(2)
1101110.1000(2)
11011010.1001(2)
In 32-bit floating-point representation, how many bits are used for the mantissa (fractional part)?
20 bit
22 bit
23 bit
21 bit
In signed integer arithmetic, overflow occurs when:
Adding two numbers with the same sign gives a result with opposite sign
Adding two numbers with different signs
Adding two positive numbers results in a negative number
Adding two negative numbers results in a positive number
The Program Counter (PC) automatically increments to point to the next instruction:
After the instruction is loaded into the Instruction Register (IR)
After CU decodes the instruction
Before the instruction is loaded into IR
After CU executes the instruction
What is the binary representation of the decimal number 277(10)?
100001001(2)
100101011(2)
100011011(2)
100010101(2)
What is BCD (Binary-Coded Decimal)
A code that uses binary bits to represent ASCII characters
A code that uses binary bits to represent hexadecimal digits
A code that uses binary bits to represent octal digits
A code that uses binary bits to represent decimal digits
In 64-bit floating-point representation, how many bits are allocated for the sign?
3 bit
2 bit
1 bit
0 bit
The difference between the two unsigned 8-bit binary numbers 0110 1011(2) and 0101 0101(2) is:
0001 1010(2)
0010 0110(2)
0001 0110(2)
0010 1010(2)
In 32-bit floating-point representation, how many bits are allocated for the sign?
1 bit
3 bit
2 bit
0 bit
The signed 8-bit two’s complement binary number 1111 0011(2) is equal to which decimal value?
-13(10)
243(10)
-115(10)
12(10)
What is the binary equivalent of the hexadecimal number 5F4B(16)?
0101 1111 0110 1011(2)
0101 1101 0100 1011(2)
0101 1111 0100 1011(2)
0101 1111 0100 1101(2)
The binary number 11101.01(2) corresponds to which of the following decimal values?
27.75
29.25
29.75
27.25
The main memory refers to:
HDD (Hard Disk Drive)
ROM (Read Only Memory)
FDD (Floppy Disk Drive)
RAM ((Random Access Memory)
Which of the following is not part of the Central Processing Unit (CPU)?
Set of general-purpose registers
I/O interface unit
Control unit
Arithmetic and Logic Unit (ALU)
In the CPU, the unit connecting the CU, ALU, and registers is called:
External Bus
BIU (Bus Interface Unit)
System bus
Internal bus
In the computer representation for signed integers, 8 bits, the addition of 91 + 63 gives the result
No result because of overflow
No result because of carry out of the highest bit
154
-102
The difference between two unsigned, 8-bit binary numbers 0110 1011(2) and 0101 0111(2) is equal to which of the following binary numbers:
0001 1000(2)
0001 0100(2)
0000 1010(2)
0000 0100(2)
The product of two unsigned, 8-bit binary numbers 0000 1101(2) and 0000 1011(2) is equal to which of the following binary numbers:
1001 0111(2)
1000 1111(2)
1000 0111(2)
1010 0111(2)
The quotient of two unsigned, 8-bit binary numbers 0110 0011 (2) and 0000 1101(2) has a quotient and remainder equal to which of the following binary pairs:
Quotient: 1000(2), remainder: 0111(2)
Quotient: 0111(2), remainder: 1000(2)
Quotient: 0111(2), remainder: 0111(2)
Quotient: 1000(2), remainder: 1000(2)
The input-output system includes
Peripheral devices, input modules output, bus coupling unit
Peripheral devices, input/output modules, system bus, bus coupling unit
Peripheral devices, input/output modules, system bus
Peripheral devices, input/output modules
What unit is the system clock speed measured in?
byte
baud
Hz
bit/s
In computer representation for signed integers, 8 bits, subtraction of 67 -91 gives the result:
No result because there is a carry out of the highest bit
No result because of overflow
-24
158
The number 227.3125(10) corresponds to which of the following binary values:
11100001.0101(2)
11100011.0111(2)
11100001.0111(2)
11100011.0101(2)
The number 1111 0101 1010(2) corresponds to which of the following decimal values:
3950(10)
3926(10)
3930(10)
3962(10)
For the IEEE 754/85 standard on single real number representation, the representation is as follows: C2 82 80 00(H). Its decimal value is:
-65.25
-56.25
-65.52
-56.52
In the hexadecimal numbering system, the number 345F(16) corresponds to which of the following decimal values:
13557(10)
13407(10)
13267(10)
13557(10)
In the decimal numbering system, the number 13779(10) corresponds to which of the following hexadecimal values:
35E7(16)
36D3(16)
35D3(16)
36E7(16)
For the IEEE 754/85 standard on single real number representation, the representation of the real number 73.625 is:
42 93 40 00(H) Or 01000010 10010011 01000000 00000000(2)
42 39 40 00(H) Or 01000010 00111001 01000000 00000000(2)
24 93 40 00(H) Or 00100100 10010011 01000000 00000000(2)
42 39 04 00(H) Or 01000010 10010011 00000100 00000000(2)
In the hexadecimal numbering system, the number 5B7D(16) corresponds to which of the following binary values:
0101 1011 0111 1101(2)
0101 1011 1011 1101(2)
0101 1011 0111 1011(2)
0101 1101 0111 1101(2)
ypes of interrupts in a computer are:
Interrupts due to division by zero; interrupts due to overflow; interrupts due to RAM errors; interrupts due to peripheral device errors; interrupts due to the input-output module sending an interrupt signal to the CPU requesting data exchange.
Interrupts due to errors during program execution; interrupts due to hardware errors; interrupts due to the input-output module sending an interrupt signal to the CPU requesting data exchange.
Interrupts due to software errors; interrupts due to hardware errors;
Interrupts due to errors during program execution; hardware error interrupt
The binary number 1101 0011 1001(2) corresponds to which of the following hexadecimal values:
D3E(16)
D3A(16)
E39(16)
D39(16)
In the binary system, the number 10111.10(2) corresponds to which of the following decimal values:
23.25
25.25
25.5
23.5
Main Memory
[<$>] Contains the program to be stored
Contains the file computer instructions
Contains the addresses of instructions that need to be accessed in the computer program
Contains the programs and data that are being used by the CPU
Contains the program to be stored
In the hexadecimal numbering system, the number 3CF5(16) corresponds to which of the following decimal values:
13287(10)
15605(10)
13537(10)
15725(10)
In the computer representation of signed integers, the addition of -91 + 53 gives the result:
144
-38
does not given a result because of overflow
Does not give a result because of carrying out the highest bit
In computer representation for signed integers, which statement is incorrect:
Adding two numbers with different signs is always correct
Adding two numbers with the same sign is always correct
Adding two numbers with the same sign if the sum is the same then the result is correct
Adding two numbers with the same sign if the sum is different then the result is incorrect
The computer's instruction execution cycle consists of
3 main steps (loading instructions, decoding instructions)
2 main steps (receiving instructions, executing instructions)
4 main steps (getting instruction address, loading instruction code, decoding instructions, executing instructions)
5 main steps (getting instruction address, loading instruction code, decoding instructions, executing instructions, , end of command)
Processor speed
Indirectly evaluated through the processor clock frequency
Accurately evaluated through the processor clock frequency
Indirectly evaluated through the number of instructions executed in 1 second by the processor
Directly evaluated through the processor clock frequency
he number 267(10) corresponds to which of the following binary values:
100101011(2)
100101011(2)
101001011(2)
100001011(2)
Decimal number -105(10) corresponds to which of the following signed, 8-bit (2's complement) binary numbers:
1001 0111(2)
1110 1001(2)
1001 0110(2)
Cannot be represented
The number 254.1875(10) corresponds to which of the following binary values:
11101110.0011(2)
11111111.0101(2)
11110110.0101(2)
11111110.0011(2)
The number 234(10) corresponds to which of the following binary values:
11100010(2)
10101010(2)
11101010(2)
11101000(2)
In a 32-bit floating point number represented in a computer, how many bits long is the sign component?
2 bits
0 bits
1 bits
3 bits
The number 202.375(10) corresponds to which of the following binary values:
11000010.1110(2)
11000010.0110(2)
11001010.0100(2)
11001010.0110(2)
In a floating point number represented in 64-bit form in a computer, how many bits long is the exponent component?
8 bit
9 bit
11 bit
10 bit
In the decimal number system, the number 15948(10) corresponds to which of the following hexadecimal values:
3D6C(16)
3EC4(16)
3EC4(16)
3D4C(16)
In the hexadecimal number system, the number 5E8F(16) corresponds to which of the following decimal values:
24463(10)
24447(10)
24461(10)
24207(10)
For the IEEE 754/85 standard on representing single real numbers, the bits for the fields (S+E+M) are:
1+9+22
1+8+23
1+10+21
1+11+20
The signed binary number, 8 bits (2's complement code) 1011 1011(2) corresponds to which of the following decimal numbers:
59(10)
-69(10)
-59(10)
187(10)
The number 1110 1111 1011(2) corresponds to which of the following decimal values:
3835(10)
3861(10)
3855(10)
3857(10)
In the computer representation of signed integers, 8 bits, subtraction (-67) -91 gives the result:
98
-158
no result because of overflow
no result because of carry out of the highest bit
The quotient of two unsigned binary numbers, 8 bits 0110 1011(2) and 0000 1011(2) has the quotient and remainder equals which of the following binary pairs:
Quotient: 1000(2), remainder: 0111(2)
Quotient: 1001(2), remainder: 0111(2)
Quotient: 1001(2), remainder: 1000(2)
Quotient: 1000(2), remainder: 1001(2)
For the IEEE 754/85 standard on single real number representation, the representation is as follows: C2 BF 00 00(H). Its decimal value is:
-95.5
-59.5
-95.25
-59.25
The difference between two unsigned, 8-bit binary numbers 0110 0011(2) and 0101 0101(2) is equal to which of the following binary numbers:
0000 1010(2)
0001 1110(2)
0000 1110(2)
0001 1010(2)
The difference between two unsigned, 8-bit binary numbers 0110 1001(2) and 0100 1101(2) is equal to which of the following binary numbers:
0001 1010(2)
0000 1110(2)
0001 1100(2)
0000 110(2)
The product of two unsigned, 8-bit binary numbers 0000 1110 (2) and 0000 1010 (2) is equal to which of the following binary numbers:
1010 1100(2)
1010 0100(2)
1000 1100(2)
1000 0100(2)
In Computer information transmission system is divided by bus speed hierarchy in the computer, what types of buses are there?
There are 3 types of buses: data bus; address bus; general-purpose bus (can be used as both an address bus and a data bus)
There are 3 types of buses: parallel bus; serial bus; semi-parallel bus.
There are 3 types of buses: data bus; address bus; control bus.
There are 3 types of buses: internal bus of the microprocessor; bus of the main memory; input-output bus
In the following parts, which part is not part of the central processor:
Arithmetic and logic block
Control block to execute commands sequentially and act on functional circuits to execute commands.
Set of general-purpose registers
Internal memory
Information is stored and transmitted inside the computer in the form of:
Combination of letters and numbers
Binary
ASSCII code
Decimal
The number 1101 1011 1000(2) corresponds to which of the following decimal values:
3510(10)
3512(10)
3516(10)
3508(10)
The sum of two unsigned, 8-bit binary numbers 0101 1101(2) and 0110 1011(2) by binary number o in the following numbers:
1100 1000(2)
1110 0000(2)
1101 0000(2)
1001 1000(2)
The number 1010 0011 1101(2) corresponds to which of the following decimal values:
2621(10)
2651(10)
2623(10)
2653(10)
In the binary system, the number 11101.11(2) corresponds to which of the following decimal values:
29.65
26.65
29.75
26.75
How many bits does the BCD code represent each decimal digit?
4 bit
3 bit
6 bit
8 bit
For the IEEE 754/85 standard on single real number representation, the representation of the real number -53.125 is:
2C E0 A0 00(H) Or 00101100 11100000 10100000 00000000(2)
C2 54 80 00(H) Or 11000010 01010100 10000000 00000000(2)
C2 00 A0 00(H) Or 11000010 00000000 10100000 00000000(2)
C2 00 80 00(H) Or 11000010 00000000 100000000 00000000(2)
