MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Race around condition occurs when ? |
| A. | Two processed unknowingly wait for resources that are help by each other |
| B. | Two process wait for same resources |
| C. | All resources are shared |
| D. | Two processes share the same shared resource |
| Answer» C. All resources are shared | |
| 2. |
The mechanism that bring a page into memory only when it is needed is called _____________ |
| A. | Sagmentation |
| B. | Fragmentation |
| C. | Demand Paging |
| D. | Page and Replacement |
| Answer» D. Page and Replacement | |
| 3. |
An assembler is used to translate a program written in _____________ |
| A. | A Low Language |
| B. | A high Language |
| C. | Middle Language |
| D. | Assembly Language |
| Answer» E. | |
| 4. |
A major security problem for operating system is _____________ |
| A. | Authentication problem |
| B. | Physical problem |
| C. | Human problem |
| D. | None |
| Answer» B. Physical problem | |
| 5. |
Routine is not loaded until it is called. All routines are kept on disk in a relocatable load format. The main program is loaded into memory u0026 is executed. This type of loading is called _____________? |
| A. | Static loading |
| B. | Dynamic loading |
| C. | Dynamic linking |
| D. | Overlays |
| Answer» D. Overlays | |
| 6. |
Virtual memory is _____________ ? |
| A. | An extremely large main memory |
| B. | An extremely large secondary memory |
| C. | An illusion of extremely large main memory |
| D. | A type of memory used in super computers |
| Answer» D. A type of memory used in super computers | |
| 7. |
What is convoy effect ? |
| A. | Allprocess waiting for the long process to complete |
| B. | All process waiting for the small process to complete |
| C. | Process in not present in main memory |
| D. | None of above |
| Answer» B. All process waiting for the small process to complete | |
| 8. |
The number of processes completed per unit time is known as _____________ ? |
| A. | Output |
| B. | Throughput |
| C. | Efficiency |
| D. | Capacity |
| Answer» C. Efficiency | |
| 9. |
Memory management is _____________ |
| A. | replaced with virtual memory on current systems |
| B. | not used in modern operating system |
| C. | not used on multiprogramming systems |
| D. | critical for even the simplest operating systems |
| Answer» B. not used in modern operating system | |
| 10. |
Resolution of externally defined symbols is performed by _____________ |
| A. | Linker |
| B. | Loader |
| C. | Compiler |
| D. | Assembler |
| Answer» B. Loader | |
| 11. |
Which of the following topologies consists of multiple CPUs connected by a single communication line running the length of the network? |
| A. | Tree |
| B. | Ring |
| C. | Bus |
| D. | Star |
| Answer» D. Star | |
| 12. |
Which of the following algorithm suffers from the Belady's anomly ? |
| A. | FIFO |
| B. | LIFO |
| C. | Optimal Algorithm |
| D. | None of above |
| Answer» B. LIFO | |
| 13. |
In the blocked state ? |
| A. | the processes waiting for I/O are found |
| B. | the process which is running is found |
| C. | the processes waiting for the processor are found |
| D. | none of the above |
| Answer» B. the process which is running is found | |
| 14. |
All of the following are examples of real security and privacy risks except _____________ |
| A. | Spam |
| B. | Hacker |
| C. | virus |
| D. | theft |
| Answer» B. Hacker | |
| 15. |
_____________ is a high level abstraction over Semaphore. |
| A. | Shared memory |
| B. | Monitor |
| C. | Mutual Exclusion |
| D. | None |
| Answer» C. Mutual Exclusion | |
| 16. |
A device that forwards data packet from one network to another is called a _____________ |
| A. | Bridge |
| B. | Switch |
| C. | Hub |
| D. | Gateway |
| Answer» C. Hub | |
| 17. |
In data base, a field is a _____________ |
| A. | table of information |
| B. | lable |
| C. | group of related records |
| D. | none of these |
| Answer» D. none of these | |
| 18. |
To avoid the race condition, the number of processes that may be simultaneously inside their critical section is _____________ |
| A. | 8 |
| B. | 1 |
| C. | 16 |
| D. | 0 |
| Answer» C. 16 | |
| 19. |
PCB = |
| A. | Program Control Block |
| B. | Process Control Block |
| C. | Process Communication Block |
| D. | None |
| Answer» C. Process Communication Block | |
| 20. |
Light travels at the fastest speed in _________________ |
| A. | water |
| B. | vacuum |
| C. | hydrogen |
| D. | glass |
| Answer» C. hydrogen | |
| 21. |
Mach number is used in connection with the speed of _________________ |
| A. | aircraft |
| B. | ships |
| C. | spacecraft |
| D. | sound |
| Answer» B. ships | |
| 22. |
Metals are good conductors of electricity because _________________ |
| A. | they have high melting point |
| B. | All of the above |
| C. | the atoms are lightly packed |
| D. | they contain free electrons |
| Answer» E. | |
| 23. |
Optical fibre works on the _________________ |
| A. | total internal reflection |
| B. | interference |
| C. | scattering |
| D. | principle of refraction |
| Answer» B. interference | |
| 24. |
Superconductors are substances which _________________ |
| A. | offer high resistance to the flow of current |
| B. | conduct electricity at high temperatures |
| C. | offer no resistance to the flow of electricity |
| D. | conduct electricity at low temperature |
| Answer» D. conduct electricity at low temperature | |
| 25. |
Stars twinkle because _________________ |
| A. | the distance of the stars from the earth changes with time |
| B. | the light from the star is scattered by the dust particles and air molecules in the earth's atmosphere |
| C. | the refractive index of the different layers of the earth's atmosphere changes continuously, consequently the position of the image of a start changes with time |
| D. | the intensity of light emitted by them changes with time |
| Answer» D. the intensity of light emitted by them changes with time | |
| 26. |
The absorption of ink by blotting paper involves _________________ |
| A. | capillary action phenomenon |
| B. | siphon action |
| C. | diffusion of ink through the blotting |
| D. | viscosity of ink |
| Answer» B. siphon action | |
| 27. |
Intensity of sound has _____________ |
| A. | a subject existence |
| B. | both subjective and objective existence |
| C. | no existence |
| D. | an object existence |
| Answer» E. | |
| 28. |
Materials for rain-proof coats and tents owe their water-proof properties to _________________ |
| A. | viscosity |
| B. | elasticity |
| C. | specific gravity |
| D. | surface tension |
| Answer» E. | |
| 29. |
Light year is a unit of _____________ |
| A. | distance |
| B. | intensity of light |
| C. | light |
| D. | time |
| Answer» B. intensity of light | |
| 30. |
Moment of inertia is _________________ |
| A. | scalar |
| B. | tensor |
| C. | phasor |
| D. | vector |
| Answer» C. phasor | |
| 31. |
Sound travels at the fastest speed in _________________ |
| A. | water |
| B. | vacuum |
| C. | air |
| D. | steel |
| Answer» E. | |
| 32. |
Stars appears to move from east to west because _____________ |
| A. | the earth rotates from west to east |
| B. | the background of the stars moves from west to east |
| C. | the earth rotates from east to west |
| D. | all stars move from east to west |
| Answer» B. the background of the stars moves from west to east | |
| 33. |
Railway tracks are banked on curves _________________ |
| A. | to avoid frictional force between the tracks and wheels |
| B. | the train may not fly off in the opposite direction |
| C. | necessary centripetal force may be obtained from the horizontal component of the weight of the train |
| D. | necessary centrifugal force may be obtained from the horizontal component weight of the train |
| Answer» D. necessary centrifugal force may be obtained from the horizontal component weight of the train | |
| 34. |
Minimum number of unequal vectors which can give zero resultant are _________________ |
| A. | three |
| B. | more than four |
| C. | four |
| D. | two |
| Answer» B. more than four | |
| 35. |
The two elements that are frequently used for making transistors are ______________ |
| A. | silicon and germanium |
| B. | niobium and columbium |
| C. | iridium and tungsten |
| D. | boron and aluminium |
| Answer» B. niobium and columbium | |
| 36. |
Inside an aeroplane, flying at a high altitude , _________________ |
| A. | normal atmospheric pressure is maintained by the use of air pumps |
| B. | normal humidity and partial vacuum are maintained |
| C. | the pressure inside is less than the pressure outside |
| D. | the pressure is the same as that outside |
| Answer» B. normal humidity and partial vacuum are maintained | |
| 37. |
Sound of frequency below 20 Hz is called _________________ |
| A. | infrasonic |
| B. | supersonics |
| C. | ultrasonic |
| D. | audio sounds |
| Answer» B. supersonics | |
| 38. |
Pick out the scalar quantity. |
| A. | pressure |
| B. | acceleration |
| C. | velocity |
| D. | force |
| Answer» B. acceleration | |
| 39. |
Light from the Sun reaches us in nearly _________________ |
| A. | 4 minutes |
| B. | 16 minutes |
| C. | 8 minutes |
| D. | 2 minutes |
| Answer» D. 2 minutes | |
| 40. |
It takes much longer to cook food in the hills than in the plains, because _________________ |
| A. | due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boil |
| B. | in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving very little heat for cooking |
| C. | in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere |
| D. | in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time |
| Answer» E. | |
| 41. |
Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from _________________ |
| A. | west |
| B. | southeast |
| C. | northeast |
| D. | east |
| Answer» E. | |
| 42. |
Solar eclipse will take place when _________________ |
| A. | the earth is between the moon and the sun |
| B. | the moon does not lie on the line joining the sun and the earth |
| C. | the moon is between the sun and the earth |
| D. | the sun is between the moon and the earth |
| Answer» D. the sun is between the moon and the earth | |
| 43. |
Isotopes of an element contain _________________ |
| A. | equal number of protons and electrons |
| B. | equal number of nucleons |
| C. | the same number of neutrons but different number of protons |
| D. | the same number of protons but different number of neutrons |
| Answer» E. | |
| 44. |
Radiocarbon dating technique is used to estimate the age of _________________ |
| A. | monuments |
| B. | fossils |
| C. | soil |
| D. | rocks |
| Answer» C. soil | |
| 45. |
Large astronomical telescopes always use as objective _________________ |
| A. | mirror |
| B. | None of the above |
| C. | combinations of lenses |
| D. | lens |
| Answer» D. lens | |
| 46. |
One nanometer is equal to _________________ |
| A. | 10-9m |
| B. | 10-5m |
| C. | 10-8m |
| D. | 10-6m |
| Answer» B. 10-5m | |
| 47. |
Sound waves in air are _________________ |
| A. | longitudinal |
| B. | polarised |
| C. | electromagnetic |
| D. | transverse |
| Answer» B. polarised | |
| 48. |
When collision between the bodies in a system in inelastic in nature then for system? |
| A. | Momentum change but K.E remains same |
| B. | K.E change but momentum remains same |
| C. | Momentum and K.E both change |
| D. | Both remain same |
| Answer» C. Momentum and K.E both change | |
| 49. |
One should not connect a number of electrical appliances to the same power socket because _________________ |
| A. | this can damage the domestic wiring due to overloading |
| B. | the appliance will not get full voltage |
| C. | this can damage the electrical meter |
| D. | this can damage the appliances due to overloading |
| Answer» B. the appliance will not get full voltage | |
| 50. |
On a cold day when a room temperature is 15C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15C, because |
| A. | plastics have a lower density than metals |
| B. | plastics have a higher thermal conductivity than metals |
| C. | metals are good conductor of heat |
| D. | metals have higher thermal capacity than plastics |
| Answer» D. metals have higher thermal capacity than plastics | |