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MCQOPTIONS
This section includes 9294 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 801. |
If the resolution of a printer is 1200 dpi, the number of dots per square inch is |
| A. | 1200 |
| B. | 800 |
| C. | 1200 x 1200 |
| D. | either (a) or (b) |
| Answer» D. either (a) or (b) | |
| 802. |
Machine cycle is always the same as instruction cycle. |
| A. | True |
| B. | False |
| Answer» C. | |
| 803. |
Which of the following directives in 8085 causes one byte to be reserved in the memory? |
| A. | D S |
| B. | D B |
| C. | D W |
| D. | E Q U |
| Answer» E. | |
| 804. |
The chip 8259 is a |
| A. | programmable interrupt controller |
| B. | programmable peripheral interface |
| C. | I/O device |
| D. | memory chip |
| Answer» B. programmable peripheral interface | |
| 805. |
Which addressing mode is suitable only for these instructions in which there is only one operand? |
| A. | Implicit |
| B. | Register |
| C. | Direct |
| D. | Immediate |
| Answer» B. Register | |
| 806. |
Assertion (A): Microprocesspr 8085 has six 8 bit registers B, C, D, E, H L.Reason (R): B - C, D - E, H - L may be combined to form register pairs to hold 16 bits data. |
| A. | Both A and R are correct and R is correct explanation of A |
| B. | Both A and R are correct but R is not correct explanation of A |
| C. | A is correct R is wrong |
| D. | A is wrong R is correct |
| Answer» C. A is correct R is wrong | |
| 807. |
Microprocessor 386SX is a 16/32 bit microprocessor. It has |
| A. | 16 bit registers and 32 bit data bus |
| B. | 16 bit registers and 16 bit data bus |
| C. | 32 bit registers and 32 bit data bus |
| D. | 32 bit register and 16 bit data bus |
| Answer» E. | |
| 808. |
Assertion (A): An instruction cycle consists of fetch and execute cycles.Reason (R): Fetch cycle has one machine cycle but execute cycle may have one or more machine cycles depending on length of instruction. |
| A. | Both A and R are correct and R is correct explanation of A |
| B. | Both A and R are correct but R is not correct explanation of A |
| C. | A is correct R is wrong |
| D. | A is wrong R is correct |
| Answer» C. A is correct R is wrong | |
| 809. |
Instruction cycle is the time required to complete the execution of an instruction. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 810. |
The contents of F register in 8085 are 01010001. This means |
| A. | S = 0, Z = 1, AC = 1, P = 0 and CY=1 |
| B. | S = 1, Z = 1, AC = 1, P = 0 and CY=1 |
| C. | S = 1, Z = 0, AC = 1, P = 0 and CY=1 |
| D. | S = 1, Z = 0, AC = 0, P = 0 and CY=1 |
| Answer» B. S = 1, Z = 1, AC = 1, P = 0 and CY=1 | |
| 811. |
Which of the following is a valid expression in FORTRAN 77? |
| A. | B * - 3 |
| B. | B * (- 3) |
| C. | B * * - 3 |
| D. | B * + 2 |
| Answer» C. B * * - 3 | |
| 812. |
In setting up 'for' loops in Pascal, the initial and final values of index may be |
| A. | integer constants |
| B. | Integer constants or integer variable names |
| C. | integer constants or integer variable names or integer expressions |
| D. | integer constants or real constants |
| Answer» D. integer constants or real constants | |
| 813. |
In a 3 byte instruction of 8085, the first, second and third byte respectively indicate |
| A. | operation code, low order byte of data/address and high order byte of data / address |
| B. | low order byte of data / address, high order byte of data / address and operation code |
| C. | high order byte of data / address, low order byte of data / address and operation code |
| D. | high order byte of data / address, operation code and low order byte of data / address |
| Answer» B. low order byte of data / address, high order byte of data / address and operation code | |
| 814. |
In 8085 stack pointer is |
| A. | 4 bit register |
| B. | 8 bit register |
| C. | 16 bit register |
| D. | 32 bit register |
| Answer» D. 32 bit register | |
| 815. |
In 8085 microprocessor with memory mapped I/O which of the following is true? |
| A. | I/O devices have 16 bit addresses |
| B. | I/O devices are accessed during IN and OUT instructions |
| C. | There can be a maximum of 256 input and 256 output devices |
| D. | Logic operations can not be performed |
| Answer» B. I/O devices are accessed during IN and OUT instructions | |
| 816. |
What does the operator ( ) mean in C? |
| A. | Function expression |
| B. | Array expression |
| C. | Structure operator |
| D. | Increment / Decrement |
| Answer» B. Array expression | |
| 817. |
Which of the following is a valid FORTRAN assignment statement? |
| A. | 10 = N |
| B. | X + 2.1 = 5.6 |
| C. | A = B |
| D. | A = B = 1 |
| Answer» D. A = B = 1 | |
| 818. |
In 8085 the term 'absolute addressing' means |
| A. | Direct addressing |
| B. | Immediate addressing |
| C. | Register addressing |
| D. | Register indirect addressing |
| Answer» B. Immediate addressing | |
| 819. |
The range of floating point numbers in Java is |
| A. | 1.4 E - 45 to 3.4 E + 38 |
| B. | 3.4 E - 45 to 1.4 E + 38 |
| C. | 1.4 E - 38 to 3.4 E + 45 |
| D. | 3.4 E - 38 to 1.4 E + 45 |
| Answer» B. 3.4 E - 45 to 1.4 E + 38 | |
| 820. |
Which of the following statements is written in plain English in 8085? |
| A. | Data definition |
| B. | Assignment |
| C. | Conditional |
| D. | Repetitive |
| Answer» B. Assignment | |
| 821. |
If N = 196, the result of the following program will be INTEGER N, DIGIT 1, DIGIT 2, DIGIT 3, SUMREAD*, NDIGIT 1 = N - (N / 10)* 10 N = N / 10DIGIT 2 = N - (N / 10)* 10 N = N / 10DIGIT 3 = N - (N / 10)* 10SUM = DIGIT 1 + DIGIT 2 + DIGIT 3 |
| A. | 196 |
| B. | 16 |
| C. | 16.0 |
| D. | 196.0 |
| Answer» C. 16.0 | |
| 822. |
Which of the following statements in FORTRAN 77 is non executable? |
| A. | GO TO |
| B. | RETURN |
| C. | STOP |
| D. | PARAMETER |
| Answer» E. | |
| 823. |
A blank EPROM has |
| A. | all bits set to logical 0 |
| B. | all bits set to logical 1 |
| C. | half the total number of bits set to 0 and remaining half to logical 1 |
| D. | either (a) or (b) |
| Answer» C. half the total number of bits set to 0 and remaining half to logical 1 | |
| 824. |
In 8085, which of the following registers cannot be paired? |
| A. | A |
| B. | E |
| C. | C |
| D. | both (b) and (c) |
| Answer» B. E | |
| 825. |
If the mantissa has a sign bit of 0 and the exponent is changed from a negative number to a more positive number the result is |
| A. | a positive number and closer to zero |
| B. | a positive number and away from zero |
| C. | a negative number |
| D. | a negative number and closer to zero |
| Answer» B. a positive number and away from zero | |
| 826. |
The programming language in which Excel records the macro code is |
| A. | basic |
| B. | visual basic |
| C. | video basic |
| D. | basic 2 |
| Answer» C. video basic | |
| 827. |
The 8085 instruction LDA FFA is an example of |
| A. | Direct addressing |
| B. | Register addressing |
| C. | Immediate addressing |
| D. | Register indirect addressing |
| Answer» B. Register addressing | |
| 828. |
Consider the following statement in Fortran 77 READ *, (X.(I), I = 0, 4) Which of the following is correct? |
| A. | 3 values would be read and stored in X (0), X (1), X (2) |
| B. | 4 values would be read and stored in X (0), X (1), X (2), X (3) |
| C. | 5 values would be read and stored in X (0), X (1), X (2), (3)(4) |
| D. | 5 values would be read and stored in X (I), X (2), X (3), X (4), X (5) |
| Answer» D. 5 values would be read and stored in X (I), X (2), X (3), X (4), X (5) | |
| 829. |
Fortran 77 has six arithmetic operators. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 830. |
The number of select lines in ALU 1C 74181 is |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 16 |
| Answer» C. 8 | |
| 831. |
Which of the following is a valid real constant in FORTRAN 77? |
| A. | 1.2 E 231 |
| B. | 3 E - 2 |
| C. | -3.2 E 2.3 |
| D. | 1.2 E 23 |
| Answer» B. 3 E - 2 | |
| 832. |
Mouse is a very suitable input device for computers. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 833. |
Which of the following instructions have only one operand? |
| A. | Multiply |
| B. | Add |
| C. | Shift |
| D. | Subtract |
| Answer» D. Subtract | |
| 834. |
Which of the following is not a keyword in C? |
| A. | int |
| B. | float |
| C. | return |
| D. | capital |
| Answer» E. | |
| 835. |
'Rotate instruction' in microprocessor belongs to |
| A. | data transfer group |
| B. | arithmetic group |
| C. | logic group |
| D. | branch group |
| Answer» D. branch group | |
| 836. |
Which of the following is a valid variable in FORTRAN 77? |
| A. | 3 A |
| B. | ALPHA -3 |
| C. | ALPHA 3 |
| D. | BALPHAC |
| Answer» D. BALPHAC | |
| 837. |
In windows the middle button of mouse is not used. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 838. |
Assertion (A): In 8085, P flag is for parity checking.Reason (R): If the result of ALU has even parity, P flag is set and if the result has odd parity, P flag is reset. |
| A. | Both A and R are correct and R is correct explanation of A |
| B. | Both A and R are correct but R is not correct explanation of A |
| C. | A is correct R is wrong |
| D. | A is wrong R is correct |
| Answer» B. Both A and R are correct but R is not correct explanation of A | |
| 839. |
Which of the following is not a special purpose peripheral? |
| A. | Programmable DMA controller |
| B. | Programmable Floppy disc controller |
| C. | Programmable Hard disc controller |
| D. | Programmable CRT controller |
| Answer» B. Programmable Floppy disc controller | |
| 840. |
Which of the following is not an interrupt line in 8085? |
| A. | TRAP |
| B. | RST 5.5 |
| C. | RST 7.5 |
| D. | RST 9.5 |
| Answer» E. | |
| 841. |
Microprocessor 8088 has |
| A. | 16 bit registers and 16 bit data bus |
| B. | 8 bit registers and 8 bit data bus |
| C. | 8 bit registers and 16 bit data bus |
| D. | 16 bit registers and 8 bit data bus |
| Answer» E. | |
| 842. |
In 8085, F register has 8 bits. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 843. |
The general purpose register code for accumulator in 8085 is |
| A. | 111 |
| B. | 000 |
| C. | 001 |
| D. | 1111 |
| Answer» B. 000 | |
| 844. |
Which 8085 instruction causes exchange of contents of stack pointer with the contents of H L register pair? |
| A. | <code>XTHL</code> |
| B. | <code>PCHL</code> |
| C. | <code>LHLD</code> |
| D. | <code>MVIA</code> |
| Answer» B. <code>PCHL</code> | |
| 845. |
Which of the following is not an internal DOS command? |
| A. | VER |
| B. | COPY |
| C. | MEM |
| D. | DATE |
| Answer» D. DATE | |
| 846. |
Assertion (A): The variable name 5KING is not valid in Fortran 77.Reason (R): In Fortran 77 the first character of a variable name must be an alphabet. |
| A. | Both A and R are correct and R is correct explanation of A |
| B. | Both A and R are correct but R is not correct explanation of A |
| C. | A is correct R is wrong |
| D. | A is wrong R is correct |
| Answer» B. Both A and R are correct but R is not correct explanation of A | |
| 847. |
The four types of integers in Java are called |
| A. | byte, short, int and long |
| B. | bit, byte, short and long |
| C. | nibble, byte, short and long |
| D. | nibble, byte, int and long |
| Answer» B. bit, byte, short and long | |
| 848. |
In 8085, high level on INTR line can be recognised only if |
| A. | TRAP and RST lines are high |
| B. | TRAP and RST lines are not high |
| C. | TRAP line is high but not RST line |
| D. | RST line is high but not TRAP line |
| Answer» C. TRAP line is high but not RST line | |
| 849. |
Consider the following statements about data structures in Pascal Arrays and files are types of data structures.List structure is not a data structure in Pascal.Each element of a binary tree is called a node of the tree. Which of the above are statements correct? |
| A. | All |
| B. | 1, and 2 only |
| C. | 1 and 3 only |
| D. | 2 and 3 only |
| Answer» D. 2 and 3 only | |
| 850. |
In the expression 3 * * 2 ** 4 ** 2 in FORTRAN 77 which exponentiation is performed first |
| A. | 4 * * 2 |
| B. | 2 * * 4 |
| C. | 3 * * 2 |
| D. | all exponentiation are performed together |
| Answer» B. 2 * * 4 | |