Q & A - Computer Science

Q & A

• Which one of the following gives the information about, the data used in near future is Which one of the following gives the information about, the data used in near future is likely to be in use already? (a)  Spatial locality                             ...
• What are the states of a bus in a computer system? What are the states of a bus in a computer system? (a)  Logic 0,logic 1 and low impedence            (b)  Logic 0,logic -1 and high impedence (c)  Logic -2,logic -1 and...
• Identify the expansion for RISC. Identify the expansion for RISC. (a)  Reduced Instruction Sign Computers       (b)  Reduced Instruction Set Computers (c)  Reduced Instruction Set Carry                ...
• Specify the Mnemonic SHRA description. Specify the Mnemonic SHRA description. (a)  Arithmetic shift right                                     (b)  Arithmetic shift left                                       ...
• Identify the addressing mode, which has instruction specifying a register which contains Identify the addressing mode, which has instruction specifying a register which contains the memory address of the operand. (a)  Register mode                         ...
• Only Push and Pop operations are applicable to which one of the following. Only Push and Pop operations are applicable to which one of the following. (a)  Queue                      (b)  Tree                         (c)  Stack                  ...
• Specify the expansion for ISZ.  Specify the expansion for ISZ. (a)  Invalid to skip if Zero                                   (b)  Increment and set if Zero                            (c)  Incremen...
• Which one of the following instructions represents . Which one of the following instructions represents  . (a)  Memory reference                                        (b)  Register reference                               ...
• Name the operation represented by . Name the operation represented by . (a)  OR                           (b)  AND                        (c)  XOR                         (d)  COMPLEMENT   (e)  NOR.
• Identify the 2’s complement of 101010101. Identify the 2’s complement of 101010101. (a)  010101010            (b)  101010101            (c)  010101000             (d)  110101011            (e)  010101011.
• Specify the hexadecimal equivalent of a decimal number , 10. Specify the hexadecimal equivalent of a decimal number , 10. (a)  A                              (b)  B                              (c)  C                              ...
• If XY = 0 then what is the value of XY ? If XY = 0 then  what is the value of XY ? (a)  X                              (b)  Y                              (c)  (X’Y’)                    (d)  (XY)               ...
• From the given k-map, give the simplified equation for F. From the given k-map, give the simplified equation for F. (a)  D BC                   (b)  DBC                     (c)  D BC                   (d)  D BC              ...
• Subtract the given unsigned decimal numbers by taking the 10's complement of the subtrahen Subtract the given unsigned decimal numbers by taking the 10s complement of the subtrahend.   5250 - 1321 (a)  3928                        (b)  3828                     ...
• Name the keyword to specify the number of pixels displayed on the screen. Name the keyword to specify the number of pixels displayed on the screen. (a)  Cell                          (b)  Color depth            (c)  Monitor size           (d) ...
• Identify the input device in which finger shows the cursor movement. Identify the input device in which finger shows the cursor movement. (a)  Mouse                     (b)  Scanner                   (c)  Glide pad                (d)  M...
• Specify the Complement for the equation, F=AB+C’D’+B’D.`  Specify the Complement for the equation, F=ABC’D’B’D.` (a)  (AB’)(C’D)(BD’)                                     (b)  (A’B’)(CD)(BD’)                                    ...
• _____ technique allows the DMA controller to transfer one data word at a time after which _____ technique allows the DMA controller to transfer one data word at a time after which must return control of the buses to the CPU. (a)  Cycle stealing               ...
• The selected target controller responds by asserting The selected target controller responds by asserting (a)  DB6                         (b)  SEL                          (c)  DB5                         (d)  DB8      ...
• The routine executed in response to an interrupt request is called ________routine. The routine executed in response to an interrupt request is called ________routine. (a)  Sub-routine                                                     (b)  Interrupt a...
• The device that in allowed to initiate data transfer on the bus is called ___________... The device that in allowed to initiate data transfer on the bus is called ___________. (a)  Bus Master                                                     (b)  Bus Arbit...
• Virtual memory is used to increase the apparent size of the _________memory. Virtual memory is used to increase the apparent size of the _________memory. (a)  Secondary              (b)  Main                        (c)  Auxiliary                 ...
• Techniques that automatically move programs and data blocks into the physical memory when Techniques that automatically move programs and data blocks into the physical memory when they are required for execution are called _______. (a)  Associative mapping   ...
• The correspondence between the main memory blocks and those in the cache is specified by.. The correspondence between the main memory blocks and those in the cache is specified by a _________. (a)  Miss penalty                                                  ...
• The ROM position of main memory is needed for storing an initial program is called________ The ROM position of main memory is needed for storing an initial program is called________. (a)    BOIS                                                              (b) ...
• When a large number of registers are included in the CPU, it is most efficient to connect  When a large number of registers are included in the CPU, it is most efficient to connect then through a ______. (a)  ALU                                               ...
• Stack is a _________list. Stack is a _________list. (a)  FIFO                        (b)  LIFO                        (c)  FILO                        (d)  OFLI                        (e)  LFIO.
• ______ is the address of the operand in a computation-type instruction or the target addre ______ is the address of the operand in a computation-type instruction or the target address in a branch type instruction. (a)  Indirect address                         ...
• The control condition is terminated with a ______. The control condition is terminated with a ______. (a)  Comma                  (b)  Semicolon              (c)  Colon                       (d)  Hash                  ...
• Information transfer from one register to another in designated in symbolic form by means. Information transfer from one register to another in designated in symbolic form by means of a _________ (a)  Control functions                                          ...
• Which of the following digital circuit is called a data selector? Which of the following digital circuit is called a data selector? (a)  Multiplexer                                                     (b)  De-multiplexer       (c)  Hal...
• What is the maximum count achieved by a counter with four flip-flops? What is the maximum count achieved by a counter with four flip-flops? (a)  10                             (b)  15                             (c)  9                     ...
• How many flip-flops make up a register of 8 bits? How many flip-flops make up a register of 8 bits? (a)  6                               (b)  7                               (c)  8                               (d)  16 ...
• In which type of flip-flop the intermediate condition of the SR flip-flop(When S=R=1) is e In which type of flip-flop the intermediate condition of the SR flip-flop(When S=R=1) is eliminated? (a)  Edge-triggered flip-flop                                (b)  JK...
• The outputs of sequential circuits are functions of  The outputs of sequential circuits are functions of (a)  External inputs      (b)  Present state of flip-flops (c)  Next state of the flip-flop                        ...
• A combinational circuit that converts binary information from n input lines to a maximum.. A combinational circuit that converts binary information from n input lines to a maximum of 2n unique output lines is (a)  Decoder                                       ...
• Which of the following gates is called as a universal gate as any digital system can be im Which of the following gates is called as a universal gate as any digital system can be implemented with it? (a)  AND gate                (b)  NAND gate             (c) ...
• A combinational circuit that performs the addition of two input bits and a carry from the A combinational circuit that performs the addition of two input bits and a carry from the previous lower significant position is called (a)  Full-adder                  ...
• If 1’s are mapped in a k-map the Boolean function is in the form If 1’s are mapped in a k-map the Boolean function is in the form (a)    Sum of products                                          (b)  Product of sums (c)    Subtraction...
• Floating point is always interpreted to represent a number in the following form Floating point is always interpreted to represent a number in the following form (a)    M * re                               (b)  Me * r                      (c)  E r * ...
• The addition of two binary numbers in 2’s complement x=1010100 and y=1000011 The addition of two binary numbers in 2’s complement x=1010100 and y=1000011 (a)    11010110             (b)  11110011               (c)  01111011               (d)  100...
• Conversion of the decimal 41.6875 into binary number will be Conversion of the decimal 41.6875 into binary number will be (a)    110001.1101                                                (b)  10000.1011           (c)  101001.1011...
• Octal number 736.4 is converted to decimal as Octal number 736.4 is converted to decimal as (a)  (475.5)10                           (b)  (479.5)10                           (c)  (478.5)10                         ...
• The fastest processor chips today have an internal clock rate of at least ______. The fastest processor chips today have an internal clock rate of at least ______. (a)  100 MHZ               (b)  200 MHZ               (c)  400 MHZ                (d)...
• ________bits are used to denote a character.  ________bits are used to denote a character. (a)  16                             (b)  7                               (c)  2                               (d)  8       ...
• A hand-shake based protocol for data transfer is an example of ______ type of data transfe A hand-shake based protocol for data transfer is an example of ______ type of data transfer. (a)    Synchronous               (b)  Asynchronous                          ...
• In based addressing mode, instruction contains ________. In based addressing mode, instruction contains ________. (a)    Base address                                               (b)  Displacement                             ...
• ______ interface is used to connect the processor to I/O devices that require transmission ______ interface is used to connect the processor to I/O devices that require transmission of data one bit at a time. (a)    Parallel                         (b)  Serial...
• The DMA transfer technique where transfer of one word data at a time is called ______. The DMA transfer technique where transfer of one word data at a time is called ______. (a)    Cycle stealing                                              (b)  Memory ste...
• The device that is allowed to initiate data transfer on the bus is called ___________. The device that is allowed to initiate data transfer on the bus is called ___________. (a)    Bus master                  (b)  Bus arbitration              (c)  Bus cycl...