Olete.in – MCQs, Mock Tests & Government Job Prep | System programming SYSTEMS PROGRAMMING /MACHINE STRUCTURE

A software is to be developed for a system which has a small memory. The software should ?

1. use recursion wherever possible
2. avoid using recursion
3. Not use macros instead of functions
4. Both b and c

✅ Correct Answer: 4

The disadvantage of machine level programming is

1. time consuming
2. chances of error are more
3. debugging is difficult
4. all of the mentioned

✅ Correct Answer: 4

The coded object modules of the program to be assembled are present in

1. ASM file
2. OBJ file
3. EXE file
4. OBJECT file

✅ Correct Answer: 2

The advantages of assembly level programming is

1. flexibility of programming is more
2. chances of error are less
3. debugging is easy
4. all of the mentioned

✅ Correct Answer: 4

The extension that is essential for every assembly level program is

1. ASP
2. ALP
3. ASM
4. PGM

✅ Correct Answer: 3

The register that may be used as an operand register is

1. Accumulator
2. B register
3. Data register
4. Accumulator and B register

✅ Correct Answer: 4

The register that can be used as a scratch pad is

1. Accumulator
2. B register
3. Data register
4. Accumulator and B register

✅ Correct Answer: 2

The registers that contains the status information is

1. control registers
2. instruction registers
3. program status word
4. all of the mentioned

✅ Correct Answer: 3

Which of the processor’s stack does not contain the top-down data structure?

1. 8086
2. 80286
3. 8051
4. 80386

✅ Correct Answer: 3

The architecture of 8051 consists of

1. 4 latches
2. 2 timer registers
3. 4 on-chip I/O ports
4. all of the mentioned

✅ Correct Answer: 4

The transmit buffer of serial data buffer is a

1. serial-in parallel-out register
2. parallel-in serial-out register
3. serial-in serial-out register
4. parallel-in parallel-out register

✅ Correct Answer: 2

The register that provides control and status information about counters is

1. IP
2. TMOD
3. TSCON
4. PCON

✅ Correct Answer: 2

The register that provides control and status information about serial port is

1. IP
2. IE
3. TSCON
4. PCON and SCON

✅ Correct Answer: 4

The device that generates the basic timing clock signal for the operation of the circuit using crystal oscillator is

1. timing unit
2. timing and control unit
3. oscillator
4. clock generator

✅ Correct Answer: 3

The registers that are not accessible by the user are

1. Accumulator and B register
2. IP and IE
3. instruction registers
4. TMP1 and TMP2

✅ Correct Answer: 4

The storage of addresses that can be directly accessed is

1. external data RAM
2. internal data ROM
3. internal data RAM and SFRS
4. external data ROM and SFRS

✅ Correct Answer: 3

The address register for storing the 16-bit addresses can only be

1. stack pointer
2. data pointer
3. instruction register
4. accumulator

✅ Correct Answer: 2

The addressing mode, in which the instructions has no source and destination operands is

1. register instructions
2. register specific instructions
3. direct addressing
4. indirect addressing

✅ Correct Answer: 2

The instruction, RLA performs

1. rotation of address register to left
2. rotation of accumulator to left
3. rotation of address register to right
4. rotation of accumulator to right

✅ Correct Answer: 2

The expansion of nested macro calls follows

1. FIFO rule
2. LIFO rule
3. LILO rule
4. priority rule

✅ Correct Answer: 2

The fourth Generation computer was made up of ?

1. Transistor
2. Vacuum tubes
3. Chips
4. Microprocessor chips

✅ Correct Answer: 4

In a syntax directed translation scheme,if values of an attribute of a node is a function of the attributes of its children,then attribute is called

1. canonical attribute
2. synthesized attribute
3. inherited attribute
4. none of these

✅ Correct Answer: 2