MCQ 1 Which of the following Addressing Modes specifies a register which contains the memory address of the operand?

(A) Indirect Addressing Mode (B) Register Addressing Mode (C) Register Indirect Addressing Mode (D) Index Addressing Mode

MCQ 2 To convert octal code to binary code which of the following digital functions should be used?

(A) Decoder (B) Encoder (C) Multiplexer (D) Demultiplexer

MCQ 3 A page fault occurs when

(A) the Deadlock happens (B) the Segmentation starts (C) the page is found in the memory (D) the page is not found in the memory

MCQ 4 A stack organized computer has

(A) Three-address Instruction (B) Two-address Instruction (C) One-address Instruction (D) Zero-address Instruction

MCQ 5 Which of the following is a main memory?

(A) Secondary memory (B) Auxiliary memory (C) Cache memory (D) Virtual memory

MCQ 6 The register that keeps track of the address of next instruction to be executed is ______ .

(A) AC (B) PC (C) IR (D) AR

MCQ 7 Serial to parallel data conversion is done using

(A) Accumulator (B) Shift Register (C) Counter (D) CPU

MCQ 8 The System bus is made up of

(A) Control bus (B) Address bus (C) Control bus and Address bus (D) Control bus, Data bus and Address bus

MCQ 9 What is the units for measuring the CPU performance?

(A) BPS (B) MIPS (C) MHz (D) VLSI

MCQ 10 The correspondence between the main memory blocks and those in the cache is specified by _________.

(A) Miss penalty (B) Replacement algorithms (C) Hit rate (D) Mapping functions.

MCQ 11 The type of memory assignment used in Intel processors is _____

(A) Little Endian (B) Big Endian (C) Medium Endian (D) None of the mentioned

MCQ 12 In pipelining, the CPU executes each instruction in a series of following stages:

Instruction Fetching (IF) → Instruction Decoding (ID) → Instruction Execution (EX) → and Register Write back (WB).

(A) Linear pipelines (B) Linear pipelines (C) Linear pipelines (D) Linear pipelines

MCQ 13 System Software usually includes a program called a _______ , which helps the programmer to find errors in a program.

(A) Write Buffer (B) Read Buffer (C) Debugger (D) Both A and C

MCQ 14 Which of the following is a faster-speed memory?

(A) 30ns (B) 10ns (C) 120ns (D) 70ns

MCQ 15 Which of the following is not involved in memory write operation?

(A) MAR (B) PC (C) IR (D) Data Bus

MCQ 16 The transfer of new information into the register is called

(A) Execution (B) Loading (C) Shifting (D) Configuring

MCQ 17 The main aim of virtual memory organisation is ____________.

(A) To provide effective memory access (B) To provide better memory transfer (C) To improve the execution of the program (D) All of the mentioned

MCQ 18 The technique used to store programs larger than the memory is ____________.

(A) Overlays (B) Extension registers (C) Buffers (D) Both Extension registers and Buffers

MCQ 19 Consider that the program is executed from main memory until it attempts to reference a page that is still in auxiliary memory. Identify this condition.

(A) Page Found (B) Page Fault (C) Page Hit (D) Page Miss

MCQ 20 Of the following, identify the memory usually written by the manufacturer.

(A) RAM (B) DRAM (C) SRAM (D) ROM

MCQ 21 In accessing a disk block the longest delay is due to

(A) Rotation time (B) Seek time (C) Transfer time (D) Access Time

MCQ 22 Which of the following is/are not part(s) of the CPU?

(A) ALU (B) The Control unit (C) The Registers (D) System bus

MCQ 23 When the R/W bit of the status register of the DMA controller is set to 1.

(A) Read operation is performed (B) Write operation is performed (C) Read & Write operation is performed (D) None of the mentioned

MCQ 24 In direct memory access mode, the data transfer takes place

(A) directly (B) indirectly (C) directly and indirectly (D) None of the mentioned

MCQ 25 What is the purpose of RAID system?

(A) It increases the processor speed (B) It increases the disk storage capacity (C) It increases the disk storage capacity and availability (D) It increases operating system efficiency