Q.1
Which of the following is not part of the CPU?
  • ALU
  • CU
  • MAR
  • ROM
Q.2
What architecture stores both program instructions and data in main memory
  • Processing Architecture
  • Harvard Architecture
  • PC Architecture
  • Von Neumann Architecture
Q.3
A time sharing system imply
  • . more than one processor in the system
  • . more than one program in memory
  • . more than one memory in the system
  • . none of above
Q.4
The branch logic that provides decision making capabilities in the control unit is known as
  • . controlled transfer
  • . conditional transfer
  • . unconditional transfer
  • . none of above
Q.5
A stack is
  • . an 8-bit register in the microprocessor
  • . a 16-bit register in the microprocessor
  • . a set of memory locations in r/wm reserved for storing information temporarily during the execution of computer
  • . a 16-bit memory address stored in the program counter
Q.6
A complete microcomputer system consists of
  • . microprocessor
  • . memory
  • . peripheral equipment
  • . all of above
Q.7
The next instruction is located?
  • . memory address register
  • . memory data register
  • . instruction register
  • . program register
Q.8
Where does a computer add and compare data?
  • . hard disk
  • . floppy disk
  • . cpu chip
  • . memory chip
Q.9
Rotational latency, and transfer time. Rotational latency refers to ______.
  • . the time its takes for the platter to make a full rotation
  • . the time it takes for the read-write head to move into position over the appropriate track
  • . the time it takes for the platter to rotate the correct sector under the head
  • . none of the above
Q.10
(2FAOC)is equivalent to _____.
  • . (195 084)10
  • . (001011111010 0000 1100)2
  • . both and (b)
  • . none of these
Q.11
_________ register keeps track of the instructions stored in program stored in memory.
  • . ar (address register)
  • . xr (index register)
  • . pc (program counter)
  • . ac (accumulator)
Q.12
If memory access takesns with cache andns without it, then the ratio (cache uses ans memory) is _____.
  • . 93%
  • . 90%
  • . 88%
  • . 87%
Q.13
. In a memory-mapped I/O system, which of the following will not be there?
  • . lda
  • . in
  • . add
  • . out
Q.14
In 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.15
Logic X-OR operation of (4ACO)H& (B53F)H results _____.
  • . aacb
  • . 0000
  • . ffff
  • . abcd
Q.16
A 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.17
The effective address in the relative address mode, when an instruction is read from the memory is
  • 849.
  • 850.
  • 801.
  • 802.
Q.18
A stack organized computer has
  • three-address instruction.
  • two-address instruction.
  • one-address instruction.
  • zero-address instruction.
Q.19
In which addressing mode the operand is given explicitly in the instruction
  • absolut
  • immediate .
  • indirect.
  • direct.
Q.20
A combinational logic circuit which sends data coming from a single source to two or more separate destinations is
  • decoder.
  • encoder.
  • multiplexer.
  • demultiplexer.
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