MCQOPTIONS
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MCQOPTIONS
This section includes 883 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics & Communication Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 551. |
Which language has a preprocessor? |
| A. | Fortran 77 |
| B. | Pascal |
| C. | C |
| D. | None of the above |
| Answer» D. None of the above | |
| 552. |
Which one of the following is valid integer variable in FORTRAN 77? |
| A. | BRG |
| B. | IBRG |
| C. | VS |
| D. | PEC |
| Answer» C. VS | |
| 553. |
Which of the following is also called handshaking programmed data transfer? |
| A. | Synchronous transfer |
| B. | Asynchronous transfer |
| C. | Interrupt driver transfer |
| D. | Both (a) and (c) |
| Answer» C. Interrupt driver transfer | |
| 554. |
Assertion (A): A higher level language is less efficient that machine language but more efficient than assembly language.Reason (R): It is easier to learn and use higher level language than machine language. |
| 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» E. | |
| 555. |
IC 74181 performs arithmetic operations when M = 1. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 556. |
Assertion (A): Each memory chip has its own address latch.Reason (R): ALE signal comes out of microprocessor 8085 and goes to memory chip. |
| 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» E. | |
| 557. |
Which of the following instructions have only one operand? |
| A. | Multiply |
| B. | Add |
| C. | Shift |
| D. | Subtract |
| Answer» D. Subtract | |
| 558. |
Which of the following is also called Non volatile RAM? |
| A. | Shadow RAM |
| B. | UVEPROM |
| C. | EEPROM |
| D. | Both (b) and (c) |
| Answer» B. UVEPROM | |
| 559. |
A PC can be upgraded to a multimedia PC by adding CD ROM drive, sound card etc. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 560. |
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 | |
| 561. |
The addressing mode depicted in the given figure is |
| A. | direct |
| B. | register |
| C. | register indirect |
| D. | implicit |
| Answer» B. register | |
| 562. |
In 8085, F register has 8 bits. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 563. |
Consider the following statements The sign of a floating point number depends on the sign of mantissa only.If the absolute value of a number is less than 1, the sign of exponent is zero or positive.With sign bit of mantissa as 0, increasing the exponent from a positive to a more positive value gives a larger floating point number. Which of the above are correct? |
| A. | All |
| B. | 1 and 2 only |
| C. | 1 and 3 only |
| D. | 2 and 3 only |
| Answer» D. 2 and 3 only | |
| 564. |
In static RAM 6264 the number of address inputs are |
| A. | 10 |
| B. | 12 |
| C. | 13 |
| D. | 15 |
| Answer» D. 15 | |
| 565. |
Which DOS command improves memory usage? |
| A. | MEM MAKER |
| B. | MOVE |
| C. | MEM IM |
| D. | None on the above |
| Answer» B. MOVE | |
| 566. |
The instruction LDA 20 in 8085 means |
| A. | contents of memory location 20 are fetched into the accumulator |
| B. | the value 20 is fetched into accumulator |
| C. | either (a) or (b) |
| D. | neither (a) nor (b) |
| Answer» B. the value 20 is fetched into accumulator | |
| 567. |
In which of the following 8085 instructions no condition flags are affected? |
| A. | INX rp |
| B. | INR r |
| C. | SBI data |
| D. | INR M |
| Answer» B. INR r | |
| 568. |
8085 data bus has 8 lines and is bidirectional. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 569. |
An I/O processor controls the flow of information between |
| A. | cache memory and I/O devices |
| B. | main memory and I/O devices |
| C. | two I/O devices |
| D. | cache and main memory |
| Answer» C. two I/O devices | |
| 570. |
Consider the following ON GO TO statement in Basic 35 ON A GO TO 15, 25, 35 If the value of A is 2.6, the control will transfer to |
| A. | line 15 |
| B. | line 25 |
| C. | line 35 |
| D. | any of the lines 15 or 25, 35 |
| Answer» C. line 35 | |
| 571. |
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 | |
| 572. |
8255 A has three 8 bit ports A, B, C for peripheral data transfer. For programming 8255 A, these ports are grouped as |
| A. | Port A with Port B |
| B. | Port A with 4 most significant ports of C, port B with 4 least significant ports of C |
| C. | Port A with Port C |
| D. | none of the above |
| Answer» C. Port A with Port C | |
| 573. |
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 | |
| 574. |
Assertion (A): In Fortran 77 the statement IMPLICIT INTEGER (A - E) identifies all variable name which begin with A, B, C, D, or E as being of integer type.Reason (R): IMPICIT statement in Fortran 77 is an improvement over earlier versions of Fortran. |
| 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 | |
| 575. |
A computer program is used to read N and compute N !. IF N = 6, the result will be |
| A. | 6 |
| B. | 12 |
| C. | 720 |
| D. | 1040 |
| Answer» D. 1040 | |
| 576. |
For the Infix expression A + B - C + D the Postfix notation is |
| A. | AB + C - D + |
| B. | + AB - C + D |
| C. | AB - C + D |
| D. | None of the above |
| Answer» B. + AB - C + D | |
| 577. |
When we use RRC instruction once in 8085, the number is |
| A. | multiplied by 2 |
| B. | divided by 2 |
| C. | multiplied by 4 |
| D. | divided by 4 |
| Answer» C. multiplied by 4 | |
| 578. |
The standard FORTRAN exponential form of decimal number 0.0000437 is |
| A. | 4.37 E - 5 |
| B. | 4.37 E - 4 |
| C. | 43.7 E - 5 |
| D. | 43.7 E - 4 |
| Answer» B. 4.37 E - 4 | |
| 579. |
The number of categories in which registers are classified in μP are |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 580. |
6 bytes means |
| A. | 6 bits |
| B. | 24 bits |
| C. | 48 bits |
| D. | 96 bits |
| Answer» D. 96 bits | |
| 581. |
Consider the expression b = acd (xz). The correct C statement for above expression is |
| A. | a c d (x * z) |
| B. | a* c* d* (x z) |
| C. | a * c * d (x * z) |
| D. | None of the above |
| Answer» D. None of the above | |
| 582. |
LET JCOKE = 11 and LPEPSI = 19. Consider the statement IF (JCOKE - LPEPSI) 5, 5, 75 JCOKE = JCOKE + 2 7 JCOKE = JCOKE + 5 The value of JCOKE after the execution of above statement will be |
| A. | 13 |
| B. | 16 |
| C. | 9 |
| D. | 14 |
| Answer» B. 16 | |
| 583. |
In Intel 8085, the integer range per word length is |
| A. | -128 to 127 |
| B. | -127 and 128 |
| C. | -64 and 63 |
| D. | -63 and 64 |
| Answer» B. -127 and 128 | |
| 584. |
The number of key words in C is |
| A. | 4 |
| B. | 8 |
| C. | 16 |
| D. | 32 |
| Answer» E. | |
| 585. |
Assertion (A): In 8085 SP and PC are 8 bit each.Reason (R): 8085 is an 8 bit microprocessor. |
| 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» E. | |
| 586. |
If F = 95.0 what will be the result of following FORTRAN 77 program? REAL F , CREAD * , FC = (5. / 9.) * (F - 32.) |
| A. | 35 |
| B. | 35 |
| C. | 25 |
| D. | 25 |
| Answer» B. 35 | |
| 587. |
For most static RAM the write pulse width should be at least |
| A. | 10 ns |
| B. | 60 ns |
| C. | 300 ns |
| D. | 1 μs |
| Answer» C. 300 ns | |
| 588. |
Assertion (A): The 'do while' statement is used less frequently than the 'while' statement.Reason (R): For most applications it is more natural to test for continuation of loop at the beginning than at the end of loop. |
| 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 | |
| 589. |
DS directive in 8085 |
| A. | forces the assembler to reserve one byte of memory |
| B. | forces the assembler to reserve a specified number of bytes in the memory |
| C. | forces the assembler to reserve a specified number of consecutive bytes in the memory |
| D. | none of the above |
| Answer» D. none of the above | |
| 590. |
In which of the following logical group instructions of 8085 is the addressing mode 'immediate'? |
| A. | ANA r |
| B. | ANA M |
| C. | ANI data |
| D. | XRA r |
| Answer» D. XRA r | |
| 591. |
Intel 2004 is a |
| A. | ROM |
| B. | Volatile RAM |
| C. | NV RAM |
| D. | None of the above |
| Answer» D. None of the above | |
| 592. |
Read the following statements about sets If A and B are sets then A + B denotes union of sets A and B.The union of A and B is that set whose elements are in either A or B or both.If A and B are sets, then difference of sets A and B is denoted by A - B.A - B in the set obtained by removing elements of A from B. Which of the above are true? |
| A. | All |
| B. | 1, 2 and 3 only |
| C. | 2 and 3 only |
| D. | 1 and 4 only |
| Answer» B. 1, 2 and 3 only | |
| 593. |
Which is not a valid dimension statement? |
| A. | DIMENSION KAT(10, 20) |
| B. | DIMENSION BAT (30, 20) |
| C. | DIMENSION KAT(K, 10) |
| D. | DIMENSION BAT (10, 5) |
| Answer» D. DIMENSION BAT (10, 5) | |
| 594. |
If X = - 285.56 and the Pascal write statement used is WRITE (X : 8). Then the print out will appear as |
| A. | -285.56 |
| B. | -2.85 E + 02 |
| C. | -2.85560 E + 02 |
| D. | -2.8 E + 02 |
| Answer» E. | |
| 595. |
A computer memory is an ordered sequence of storage cells. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 596. |
Consider the real expression in Pascal language ((X * Z) + Y/(M * P + K) + X)/Y + Y) What would be evaluated first |
| A. | XZ and MP + K |
| B. | XZ + Y and MP + K |
| C. | (MP + K + X) / Y |
| D. | Y / (MP + K) |
| Answer» B. XZ + Y and MP + K | |
| 597. |
In a computer the data transfer between hard disk and CPU is nearly the same as that between diskette and CPU. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 598. |
Assertion (A): Microprocessor 8085 has facility of interrupt control.Reason (R): TRAP, RST 7.5, RST 6.5, RST 5.5 and 1NTR are interrupt signals in 8085. |
| 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» D. A is wrong R is correct | |
| 599. |
Power Point is a presentation software. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 600. |
Which of the following statements in FORTRAN 77 is non executable? |
| A. | GO TO |
| B. | RETURN |
| C. | STOP |
| D. | PARAMETER |
| Answer» E. | |