SPSC Lecturer Computer Science Past Paper 02-02-2011 21- The operation of a staircase switch statement best explains the: A. OR operationB. AND operationC. Exclusive AND operationD. XOR operation View Answer Answer : D. XOR operation Description 22- In a time-sharing operating system, when the time slot given to a process is completed, the process goes from the RUNNING state to the? A. BLOCKED stateB. READY stateC. SUSPENDED stateD. TERMINATED state View Answer Answer : B. READY state Description 23- Which of the following is a service not supported by the operating system? A. ProtectionB. AccountingC. CompilationD. I/O operation View Answer Answer : C. Compilation Description 24- Bounded minimization is a technique for: A. Proving whether a primitive recursive function is Turning computable or notB. Proving whether a primitive recursive function is total function or notC. Generating primitive recursive functionsD. Generating partial recursive functions View Answer Answer : D. Generating partial recursive functions Description 25- Bipolar devices are desirable in the fabrication of which of the following components? A. Main memoryB. Cache memoryC. Micro program memoryD. All of these View Answer Answer : D. All of these Description 26- Any given Boolean expression can be implemented by using: A. only NAND gatesB. only XOR gatesC. only OR gatesD. only AND gates View Answer Answer : A. only NAND gates Description 27- Choose the correct statement: A. A file having two dimensional layout of data elements is called as a flat fileB. Uniquely defined primary key always consist of a single fieldC. The index table where files are stored in reverse order is called as the inverted listD. All of these View Answer Answer : C. The index table where files are stored in reverse order is called as the inverted list Description 28- The method of communication in which transmission takes place in the both directions, but only in one direction at a time, is called? A. SimplexB. Four wire circuitC. Full duplexD. Half duplex View Answer Answer : D. Half duplex Description 29- Bit stuffing refers to? A. Inserting a ‘0’ in user data stream to differentiate it with a flagB. inserting a ‘0’ in flag stream to avoid ambiguityC. Appending a nibble to the user data streamD. Appending a nibble to the flag sequence View Answer Answer : A. Inserting a ‘0’ in user data stream to differentiate it with a flag Description 30- The extent to which the software can continue to operate correctly despite the introduction of invalid input is called as? A. ReliabilityB. RobustnessC. Fault-toleranceD. Portability View Answer Answer : B. Robustness Description 31- What is stack and queue? A. Stack and queue are also known as GIGOB. Stack is known as LIFO and queue as FIFOC. Stack and queue are also known as LIFOD. Stack is known as FIFO and queue as LIFO View Answer Answer : B. Stack is known as LIFO and queue as FIFO Description 32- RISC Stand For? A. Random Instruction Set ComputersB. Random Instruction Sequence ComputersC. Reduced Instruction Set ComputersD. Really Intelligent System Compiler View Answer Answer : C. Reduced Instruction Set Computers Description 33- CISC has more instruction than? A. RISCB. DISCC. DVDD. LINUX View Answer Answer : A. RISC Description 34- Windows and Linux are? A. ProcessorsB. Operating SystemsC. ComputersD. Compilers View Answer Answer : B. Operating Systems Description 35- A modem is? A. Modulator / DemodulatorB. Mode / DemodeC. Move/ DemoveD. Mount / Demount View Answer Answer : A. Modulator / Demodulator Description 36- Which of the following is an encryption algorithm? A. OSPFB. ISISC. DESD. BGP View Answer Answer : C. DES Description 37- Choose the incorrect statement about microcomputer, minicomputers? A. A microcomputer can be placed on a single silicon chipB. A minicomputer can have more processing capability than a mainframe modelC. ROM chips may be used in micros to permanently store program instructionsD. A microcomputer chip performs the arithmetic logic and control functions of a microcomputer View Answer Answer : B. A minicomputer can have more processing capability than a mainframe model Description 38- The branch of biology that deals with cell structure is called: A. histologyB. cytologyC. embryologyD. paleontology View Answer Answer : B. cytology Description 39- Ampere hour is a unit of: A. quantity of electricityB. strength of currentC. energyD. power View Answer Answer : A. quantity of electricity Description 40- Samuel Hahnemann was the father of: A. Ancient surgeryB. AllopathyC. Antiseptic surgeryD. homoeopathy View Answer Answer : D. homoeopathy Description 1 2 3