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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