Computer science related questions and answers
Question 1: Which data communication method is used to transmit the data over a serial communication link? a. simplex b. half-duplex c. full-duplex d. b and c e. None of above Question 2: What is the minimum number of wires needed to send data over a serial communication link layer? a. 1 b. 2…
Question 1: The interactive transmission of data within a time sharing system may be best suited to a. simplex lines b. half-duplex lines c. full duplex lines d. biflex-lines Question 2: Which of the following statement is incorrect? a. The difference between synchronous and asynchronous transmission is the clocking derived from the data in…
Question 1: In OSI network architecture, the dialogue control and token management are responsibility of a. session layer b. network layer c. transport layer d. data link layer e. none of above Question 2: In OSI network architecture, the routing is performed by a. network layer b. data link layer c. transport layer d….
1) Half adder is an example of ? a. Combinational Circuits b. Sequential Circuits c. Asynchronous Circuits d. None of these Answer = A Explanation: Combinational circuits are the circuits whose output depends on the inputs of the same instant of time. 2) In JK flip flop same input, i.e at a particular time…
Q.91 A ___________development system and an ______are essential tools for writing large assembly language programs. Ans: Microprocessor, assembler Q.92 In an operation performed by the ALU, carry bit is set to 1 if the end carry C8 is ________. It is cleared to 0 (zero) if the carry is ______ …
Q.76 An interface that provides I/O transfer of data directly to and form the memory unit and peripheral is termed as (A) DDA. (B) Serial interface. (C) BR. (D) DMA. Ans: D Q.77 The 2s compliment form (Use 6 bit word) of the number 1010 is (A) 111100. (B) 110110….
Q.61 A flip-flop is a binary cell capable of storing information of (A) One bit (B) Byte (C) Zero bit (D) Eight bit Ans: A Q.62 The operation executed on data stored in registers is called (A) Macro-operation (B) Micro-operation (C) Bit-operation (D) Byte-operation Ans:…
Q.46 Translation from symbolic program into Binary is done in (A) Two passes. (B) Directly (C) Three passes. (D) Four passes. Ans: A Q.47 A floating point number that has a O in the MSB of mantissa is said to have (A) Overflow (B) Underflow (C) Important…
Q.31 Logic X-OR operation of (4ACO)_H & (B53F)_H results _=Base (A) AACB (B) 0000 (C) FFFF (D) ABCD Ans: C Q.32 When CPU is executing a Program that is part of the Operating System, it is said to be in (A) Interrupt mode (B) System mode (C) Half mode (D) Simplex mode …
Q.16 The addressing mode used in an instruction of the form ADD X Y, is (A) Absolute (B) indirect (C) index (D) none of these Ans: C Q.17 If memory access takes 20 ns with cache and 110 ns with out it, then the ratio ( cache uses a 10 ns…