MCQ 1 A k-bit field can specify any one of

(A) 3^k registers (B) 2^k registers (C) K² registers (D) K³ registers

MCQ 2 An 24 bit address generates an address space of ______ locations .

(A) 1024 (B) 4096 (C) 2⁴⁸ (D) 16777216

MCQ 3 In DMA transfers, the required signals and addresses are given by the __________

(A) Processor (B) Device drivers (C) DMA controllers (D) The program itself

MCQ 4 Information transfer from one register to another is designated in symbolic form by means of a

(A) Control Function (B) Op Code (C) Registers (D) Replacement Operator

MCQ 5 Addressing mode used in the instruction PUSH B, is

(A) direct (B) indirect (C) immediate (D) register

MCQ 6 A storage area used to store data to a compensate for the difference in speed at which the different units can handle data is

(A) Memory (B) Buffer (C) Accumulator (D) Address

MCQ 7 Computer is free from tiresome and boardoom. We call it

(A) Accuracy (B) Reliability (C) Diligence (D) Versatility

MCQ 8 An address in main memory is called

(A) Physical address (B) Logical address (C) Memory address (D) Word address

MCQ 9 A binary digit is called a

(A) Bit (B) Byte (C) Number (D) Character

MCQ 10 The push and pop instructions belonging to the category of transfer instructions of microprocessor perform data transformation between _______.

(A) two registers (B) processor register and memory stack (C) processor register and interface register (D) interface register and memory word

MCQ 11 Computer register which collects the result of computation is called

(A) instruction pointer (B) storage (C) storage register (D) accumulator

MCQ 12 Multiple-applications independently running, are typically called

(A) Multithreading (B) Multiprogramming (C) Multitasking (D) Synchronization

MCQ 13 Which of the following is responsible for coordinating various operations using timing signals?

(A) Arithmetic-logic unit (B) Control unit (C) Memory unit (D) Input unit

MCQ 14 Cache memory enhances

(A) Memory capacity (B) Memory access time (C) Secondary storage capacity (D) (Secondary storage access time

MCQ 15 Which of the following is the method in which the unit receiving the data responds with another control signal?

(A) Handshaking. (B) Synchronous (C) Strobe (D) Short message service

MCQ 16 A machine cycle refers to

(A) Fetching an instruction (B) Clock speed (C) Fetching, decoding and executing an instruction (D) Executing and instruction

MCQ 17 Busy waiting is a technique

(A) To allow the CPU wait for a busy device (B) To allow a busy device wait for the CPU (C) To keep an idle device busy (D) To improve CPU performance

MCQ 18 Microphone is a\an

(A) Output device (B) Storage device (C) Input device (D) Processing device

MCQ 19 When the addition of two +ve numbers results in a –ve value, then _______ flag will be set.

(A) Over-flow (B) Carry (C) Parity (D) Sign

MCQ 20 The unit which acts as an intermediate agent between memory and backing store to reduce process time is ___________

(A) TLB’s (B) Registers (C) Page tables (D) Cache

MCQ 21 Memory of computer which is used to speed up the computer processing is

(A) ROM (B) cache memory (C) BIOS (D) RAM

MCQ 22 Step of computer which performs the action given in the instruction is called

(A) fetch (B) calculate (C) decode (D) execute

MCQ 23 The transfer of large chunks of data with the involvement of the processor is done by _______.

(A) DMA controller (B) Arbitrator (C) User system programs (D) None of the mentioned

MCQ 24 Does the Load instruction do the following operation/s?

(A) Loads the contents of a disc onto a memory location (B) Loads the contents of a location onto the accumulators (C) Load the contents of the PCB onto the register (D) None of the mentioned

MCQ 25 In based addressing mode, instruction contains ________.

(A) Base address (B) Displacement (C) Absolute address (D) Relative address