# IIT JEE/Programming Computer Architecture Sample Test,Sample questions

## Question: `#2?s complement of -13 = 11110011 Add the two numbers in their 2?s complement form including their sign bits and discard any carry out of the sign (leftmost) bit position. So the answer is 11101101 (-19). -6 11111010 -13 11110011 ---------------------- -19 11101101 #6. Which one of the following CPU registers holds the address of the instructions (instructions in the program stored in memory) to be executed next?IR (Instruction Register)`

2.MBR (Memory Buffer Register)

3.AC (Accumulator)

4.PC (Program Counter)

## Question: `.Boolean functions expressed as a --------- of minterms or ---------- of maxterms are said to be in a canonical form.`

1.Product Sum

2.Sum Product

3.Subtract Divide

4.Divide Subtract

## Question: `.Information transfer from one register to another is designated in symbolic form by means of`

1.Control Function

2.Op Code

3.Registers

4.Replacement Operator

## Question: `2?s complement of -13 = 11110011 Add the two numbers in their 2?s complement form including their sign bits and discard any carry out of the sign (leftmost) bit position. So the answer is 11101101 (-19). -6 11111010 -13 11110011 ------------------ -19 11101101 #38. Which one of the following CPU registers holds the address of the instructions (instructions in the program stored in memory) to be executed next?IR (Instruction Register)`

2.MBR (Memory Buffer Register)

3.AC (Accumulator)

4.PC (Program Counter).

1.65,536

2.64,536

3.65,436

4.65,546

1.Decoder

2.Encoder

4.None of these

1.AND gate

2.OR gate

3.NAND gate

4.NOR gate

1.AND gate

2.OR gate

3.NAND gate

4.NOR gate

1.C? + A

2.C + C?A?

3.C.A?

4.C?.A

1.(444)5

2.(12023)5

3.(131313)5

4.(12021)5

1.Q(t)

2.Q?(t+1)

3.1

4.Q?(t)

1.Q(t)

2.Q?(t+1)

3.1

4.Q?(t)

1.1110

2.110

3.1101

4.1111

## Question: `he registers found in the processor unit are`

1.Operational registers

2.Memory registers

3.Binary registers

4.Storage registers

## Question: `In which type of flip-flop the indeterminate condition of the SR flip-flop (when S=R=1) is eliminated?`

1.Edge-triggered flip-flop

2.JK flip-flop

3.D flip-flop

4.T flip-flop

## Question: `In which type of flip-flop the indeterminate condition of the SR flip-flop (when S=R=1) is eliminated?T flip-flop`

1.Edge-triggered flip-flop

2.JK flip-flop

3.D flip-flop

4.T flip-flop

## Question: `Information transfer from one register to another is designated in symbolic form by means of a`

1.Control Function

2.Op Code

3.Registers

4.Replacement Operator

## Question: `System Software usually includes a program called a -------- which helps the programmer find errors in a program.`

1.Write Buffer

3.Debugger

4.Both (opt1) and (opt3) above

## Question: `Techniques that automatically move program and data blocks into the physical main memory when they are required for execution are called`

1.Associative-Mapping techniques

2.Main Memory techniques

3.Virtual Memory techniques

4.Cache Memory techniques

## Question: `Techniques that automatically move program and data blocks into the physical main memory when they are required for execution are calledVirtual Memory techniques`

1.Associative-Mapping techniques

2.Main Memory techniques

3.Virtual Memory techniques

4.Cache Memory techniques

## Question: `The bulk of the binary information in a digital computer is stored in memory but all computations are done in`

1.Timing Control

2.Memory Registers

3.Processor Registers

4.Program Control

## Question: `The bulk of the binary information in a digital computer is stored in memory but all computations are done in`

1.Timing Control

2.Memory Registers

3.Processor Registers

4.Program Control

1.Comma

2.Semicolon

3.Colon

4.Hash

## Question: `The correspondence between the main memory blocks and those in the cache is specified by`

1.Mapping function

2.Replacement algorithm

3.Hit rate

4.Miss penalty

## Question: `The correspondence between the main memory blocks and those in the cache is specified by aPage fault`

1.Miss penalty

2.Replacement algorithms

3.Hit rate

4.Mapping functions.

## Question: `The CPU nearly delays its operation for one memory cycle to allow direct memory I/O transfer. This process is called`

1.Burst transfer

2.Cycle waiting

3.Cycle stealing

4.Cycle interrupting

## Question: `The DMA transfer technique where transfer of one word data at a time is called`

1.Cycle stealing

2.Memory stealing

3.Hand-shaking

4.Inter-leaving

1.8

2.2

3.4

4.16

## Question: `The one major advantage of CMOS is its #34. The one major advantage of CMOS is itsHigh propagation delay`

1.Low propagation delay

2.High propagation delay

3.Very low propagation delay

4.Very high propagation delay

## Question: `The processor ---------- and I/O Devices are interconnected by means of a common bus. #17. The processor ---------- and I/O Devices are interconnected by means of a common bus.Main Memory`

1.Cache Memory

2.Auxiliary Memory

3.Virtual Memory

4.Main Memory

## Question: `The processor _________ and I/O Devices are interconnected by means of a common bus. #49. The processor _________ and I/O Devices are interconnected by means of a common bus.`

1.Cache Memory

2.Auxiliary Memory

3.Virtual Memory

4.Main Memory

## Question: `The registers found in the processor unit are`

1.Operational registers

2.Memory registers

3.Storage registers

4.Binary registers

1.Disk Space

3.Pages

4.Frames

## Question: `The simplest way to determine cache locations in which to store memory blocks is the`

1.Associative Mapping technique

2.Direct Mapping technique

3.Set-Associative Mapping technique

4.Indirect Mapping technique

## Question: `The simplest way to determine cache locations in which to store memory blocks is the`

1.Associative Mapping technique

2.Direct Mapping technique

3.Set-Associative Mapping technique

4.Indirect Mapping technique

1.11100011

2.11110011

3.11001100

4.11101101

1.11100011

2.11110011

3.11001100

4.11101101

1.Execution

3.Shifting

4.Configuring

1.Decoder

2.Encoder

3.Multiplexer

4.Demultiplexer

1.Decoder

2.Encoder

3.Multiplexer

4.Demultiplexer

## Question: `What are the building blocks of combinational circuits?Registers`

1.Flip-flops

2.Logical gates

3.Latches

4.Full-subtractor

1.Flip-flops

2.Logic gates

3.Latches

4.Registers

## Question: `What are the major components of a CPU?`

1.Control Unit Register Set Arithmetic Logic Unit

2.Control Unit Memory Unit Arithmetic Logic Unit

3.Memory Unit Arithmetic Logic Unit Auxiliary Memory

4.Register Set Control Unit Memory Unit

## Question: `What are the major components of a CPU?Control Unit Register Set Arithmetic Logic UnitControl Unit Memory Unit Arithmetic Logic Unit`

1.Control Unit Register Set Arithmetic Logic Unit

2.Control Unit Memory Unit Arithmetic Logic Unit

3.Memory Unit Arithmetic Logic Unit Auxiliary Memory

4.Register Set Control Unit Memory Unit

1.x

2.y

3.0

4.1

1.Top

2.Type

3.Toggle

4.Tickle

1.Top

2.Type

3.Toggle

4.Tickle

1.Parallel

2.Serial

3.Output

4.Input

1.No Change

2.Clear to 0

3.Set to 1

4.Indeterminate.

## Question: `What is Q when S = 1 and R = 1 for SR flip-flop?Set to 1`

1.No Change

2.Clear to 0

3.Complement of previous output

4.Indeterminate.

## Question: `What is the name of device that is allowed to initiate data transfer on the bus?`

1.Bus Master

2.Bus Arbitration

3.Bus Cycle

4.Bus Request

## Question: `What is the purpose of RAID system?`

1.It increases the processor speed

2.It increases the disk storage capacity

3.It increases the disk storage capacity and availability

4.It increases operating system efficiency

## Question: `Which of the following modes are used to handle data transfer to and from peripherals?`

1.Programmed I/O

2.Programmed I/O

3.Interrupted-initiated I/O

4.Programmed I/O Interrupted-initiated I/O Direct memory access

## Question: `Which of the following representation requires the least number of bits to store the number +255?`

1.BCD

2.2?s complement

3.1?s complement

4.Unsigned binary

1.Write Buffer