Q.1
Characteristic of RAM memory makes it not suitable for permanentstorage?
  • too slow
  • unreliable
  • it is volatile
  • too bulky
Q.2
Computers, subtraction is generally carried out by
  • 9’s complement
  • 10’s complement
  • 1’s complement
  • 2’s complement
Q.3
Computers use addressing mode techniques for ____________.
  • giving programming versatility to the user by providing facilities as pointers to memory counters for loop control
  • to reduce no. of bits in the field of instruction
  • specifying rules for modifying or interpreting address field of the instruction
  • All the above
Q.4
Is equivalent to _____.
  • (195 084)10
  • (001011111010 0000 1100)2
  • Both and (B)
  • None of these
Q.5
Register keeps track of the instructions stored in program storedin memory.
  • AR (Address Register)
  • XR (Index Register)
  • PC (Program Counter)
  • AC (Accumulator)
Q.6
Memory access takesns with cache andns without it, then the ratio(cache uses ans memory) is _____.
  • 93%
  • 90%
  • 88%
  • 87%
Q.7
In a memory-mapped I/O system, which of the following will not be there?
  • LDA
  • IN
  • ADD
  • OUT
Q.8
Dynamic RAM is used as main memory in a computer system asit______.
  • Consumes less power
  • has higher speed
  • has lower cell density
  • needs refreshing circuitry
Q.9
Signed-magnitude binary division, if the dividend is (11100)2 and divisor is(10011)2 then the result is ______.
  • (00100)2
  • (10100)2
  • (11001)2
  • (01100)2
Q.10
X-OR operation of (4ACO)H& (B53F)H results _____.
  • AACB
  • 0000
  • FFFF
  • ABCD
Q.11
Multiplicand register & multiplier register of a hardware circuitimplementing booth's algorithm have (& (1100). The result shall be ______.
  • (812)10
  • (-12)10
  • (12)10
  • (-812)10
Q.12
Register keeps tracks of the instructions stored in program storedin memory.
  • AR (Address Register)
  • XR (Index Register)
  • PC (Program Counter)
  • AC (Accumulator)
Q.13
Floating point number that has a O in the MSB of mantissa is said tohave_____.
  • Overflow
  • Underflow
  • Important number
  • Undefined
Q.14
Page fault
  • Occurs when there is an error in a specific pag
  • Occurs when a program accesses a page of main memory.
  • Occurs when a program accesses a page not currently in main memory.
  • Occurs when a program accesses a page belonging to another program.
Q.15
Program Counter contains a numberand address part of the instruction contains the numberThe effective address in the relative address mode, when an instruction is read from the memory is
  • 849.
  • 850.
  • 801.
  • 802.
Q.16
Stack organized computer has
  • Three-address Instruction.
  • Two-address Instruction.
  • One-address Instruction.
  • Zero-address Instruction.
Q.17
Which addressing mode the operand is given explicitly in the instruction
  • Absolut
  • Immediate .
  • Indirect.
  • Direct.
Q.18
Combinational logic circuit which sends data coming from a single source to twoor more separate destinations is
  • Decoder.
  • Encoder.
  • Multiplexer.
  • Demultiplexer.
Q.19
Necessary, the results are transferred from the CPU to main memory by
  • I/O devices.
  • CPU.
  • shift registers.
  • none of thes
Q.20
Successive A/D converter is
  • a high-speed converter.
  • a low speed converter.
  • a medium speed converter.
  • none of thes
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