FORENSIC SCIENCE- PHYSICS- PAGE 1
FORENSIC SCIENCE- PHYSICS- PAGE 1 MCQs
1. A microscope used for side by side comparison is known as
(A) Simple microscope (B) Compound microscope (C) Comparison microscope (D) Fluorescent microscope.
Ans: C
2. Encrypted Security Payload (ESP) is an extension that provides
(A) Stability (B) Extension (C) Reliability (D) Confidentiality
Ans: D
3. Which threat is your Web application susceptible to if a user can pass specially crafted input that invokes semantic control codes?
(A) Injection (B) Insecure direct object references (C) Failure to restrict URL access (D) Insufficient transport layer protection
Ans: A
4. Which control construct can be used to perform an SQL injection attack?
(A) Single quote (‘) (B) Null (\0) byte (C) Less than sign(<) (D) Greater than sign(>)
Ans: A
5. Laboratories seek accreditation from the:
(A) Home Office (B) Foreign Bodies (C) NABL (D) NAAC
Ans: C
6. Corroborative evidence is the term used for:
(A) Evidence which supports other evidence (B) Rejection of evidence
(C) Evidence that associates certain characteristics (D) All of the above
Ans: A
7. What do you mean by corpus delict?
(A) Essence of crime (B) Place of crime (C) Type of crime (D) Person committing crime
Ans: A
8. A best example for, compressed tool marks is:
(A) Firing pin (B) Wrench (C) Knife (D) Needle
Ans: A
9. The control soil sample for matching the incriminated soil sample of foot print should be collected from
(A) Foot print itself (B) About 2-3 inches away from foot print
(C) About 1 feet away from foot print (D) More than 1 feet away from the spot
Ans: B
10. The Cross Section of Human Male beard Hair is
(A) Elliptical Shape (B) Triangular Shape (C) Circular Shape (D) Oval Shape
Ans: B
11. Which of the following methods can most effectively be used to prevent logical breach of security?
(A) operating system and other system software (B) computer architectural design
(C) distributed systems design (D) network design
Ans: A
12. An organization is surplussing its old desktop computers. Being concerned with data remanence, what measures should the organization take first?
(A) Erase the hard drives (B) Format the hard drives
(C) Activate its TEMPEST shielding (D) Clear the computers’ RAM
Ans: A
13. What is the best defense against social engineering?
(A) Spyware filters (B) Firewalls (C) Data leakage protection (DLP) (D) Security awareness training
Ans: D
14. Potential energy source for inducing fusion reaction is
(A) x-ray (B) laser (C) ultraviolet (D) microwave
Ans: B
15. Principle of laser is
(A) spontaneous absorption (B) simulated emission (C) induced emission (D) Both (B) and (C)
Ans: D
16. In normal population, the number of atoms in the
(A) Excited state is more. (B) Ground state is more (C) Equal in ground state and excited state (D) Ground state is zero
Ans: B
17. The ratio of speed of light in vacuum to the speed of light in a particular medium is known as the medium’s ............…
(A) Retention time (B) Birefringence (C) Polarization (D) Refractive index
Ans: D
18. How many normal modes of vibrational are possible for a benzene molecule?
(A) 6 (B) 12 (C) 15 (D) 30
Ans: D
19. Which one from the following statements is FALSE about the NMR experiment?
(A) The energy required to flip the spin of a proton is in the infrared region of the electromagnetic spectrum.
(B) The energy difference between the two spin states depends on the strength of the magnetic field.
(C) When energy absorption occurs, the nuclei are said to be in resonance with the electromagnetic radiation.
(D) When a proton is aligned with the magnetic field, its energy is lower than when it is aligned against the magnetic field.
Ans: A
20. Determine the values of A,B,C and D that make the sum term A+B+C+D equal to zero and OR gate with schematic “bubbles” on its Inputs performs the same functions as a(n) ............... gate
(A) NOR (B) OR (C) NOT (D) NAND
Ans: D
21. Which type of gate can be used to add two bits?
(A) Ex-OR (B) Ex-NOR (C) Ex-NAND (D) NOR
Ans: A
22. The storage element for a static RAM is the ............…
(A) Diode (B) Resistor (C) Capacitor (D) Flip-flop
Ans: D
23. Which of the following is not a basic Boolean operation?
(A) OR (B) NOT (C) AND (D) FOR
Ans: D
24. For quality control of Portland cement, the test essentially done is
(A) Tensile Strength (B) Setting Time (C) Soundness (D) All
Ans: D
25. The type of lime used in lime concrete is:
(A) Fat lime (B) Poor Lime (C) Slaked Lime (D) Hydraulic lime
Ans: D
26. The usual proportion of ingredients in reinforced cement concrete is
(A) Portland cement (1 part), clean sand (2 to 4 parts) and coarse aggregate (1 to 2 parts)
(B) Portland cement (1 part), clean sand (1 to 2 parts) and coarse aggregate (2 to 4 parts)
(C) Portland cement (1 part), clean sand and coarse aggregate (2 to 4 parts)
(D) None of the above
Ans: B
27. Blast furnace slag cement
(A) Develops low heat of hydration (B) Has less early strength
(C) Develops high heat of hydration (D) Both (A) and (B)
Ans: D
28. Hydration of cement is due to the chemical action of water with
(A) dicalcium silicate (B) tricalcium silicate (C) tricalcium aluminate (D) all of these
Ans: D
29. When an external magnetic field is applied to a magnetic field, what happens to the protons in the sample?
(A) All protons align with the field (B) All proton align opposite to the field.
(C) All proton assume a random orientation (D) Some proton align with the field and some align opposite.
Ans: D
30. Heat Resistant Glass contains more Silica (75%- 80%) and upto 15% :
(A) Lead Oxide (B) Aluminium Oxide (C) Boron Trioxide (D) Magnesium oxide
Ans: C
31. Which of the following material can be used for casting the detailing of tool marks?
(A) Plaster Of Paris (B) Plasticine (C) Wax (D) Woodsmetal
Ans: B
32. Which is typically the longest :
(A) Bit (B) Byte (C) Nibble (D) Word
Ans: D
33. The base of the hexadecimal system is:
(A) Eight (B) Sixteen (C) Ten (D) Two
Ans: B
34. The Indian standard code specifies that the crushing strength for which the mix should be designed in the laboratory should be
(A) 1.25 (B) 1.5 (C) 2 (D) 2.5
Ans: A
35. Li nucleus has three protons and four neutrons. Mass of Li is 7.0.6005 a.m.u., Mass of proton is 1.007277 a.m.u. and Mass of neutron is 1.008665 a.m.u. Mass defect of Lithium nucleus in a.m.u. is:
(A) 0.4050 a.m.u. (B) 0.04052 a.m.u.
(C) 0.04055 a.m.u. (D) 0.04048 a.m.u.
Ans: C
36. The noise margin for a standard TTL gate is
(A) 1.0 V (B) 0.4 V (C) 1.4 V (D) 0.8 V
Ans: B
37. In the differential amplifier circuit, which of the following terminals are connected together?
(A) Bases (B) Emitters (C) Collectors (D) One base to another collector
Ans: B
38. The 2’s complement of the number 1101101 is
(A) 0101110 (B) 0111110 (C) 0110010 (D) 0010011
Ans: D
39. DeMorgan’s first theorem shows the equivalence of
(A) OR gate and Exclusive OR gate. (B) NOR gate and Bubbled AND gate.
(C) NOR gate and NAND gate. (D) NAND gate and NOT gate
Ans: B
40. Efficiency of the full wave rectifier is
(A) 40.6% (B) 81.2% (C) 42.6% (D) 85.25%
Ans: B
41. Microscopes that are ............... will remain nearly focused after the low power objective lens is changed to the high power objective lens. (A) Monocular (B) Parcentered (C) Parfocal (D) Properly adjusted
Ans: A
42. A microscope has a 4x ocular lens and a 10x objective, what is this microscope’s total magnification
(A) 4x (B) 14x (C) 40x (D) 400x
Ans: C
43. Besides silica, the main constituent of Gypsum soil is
(A) Calcium carbonate (B) Calcium sulphate (C) Ferric oxide (D) Aluminium oxide
Ans: B
44. Arrange in Sequence : Soil Examination can be done by following methods:
(i) Mineral Analysis
(ii) Density determination
(iii) Color Examination
(iv) Enzymatic analysis
Codes :
(A) (i), (iv), (iii) and (ii)
(B) (iii), (ii), (i) and (iv)
(C) (ii), (i), (iii) and (iv)
(D) (iv), (ii), (iii) and (i)
Ans: B
45. Two glass fragments can be compared with the help of :
(A) Physical matching (B) Refractive index (C) Density gradient tube (D) All of the above
Ans: D
46. The darkness of wave form of speech samples reflects :
(A) Time (B) Fundamental Frequency (C) Amplitude (D) Intensity
Ans: D
47. What is the splitting pattern of the methylene protons in propane?
(A) Doublet (B) Triplet (C) Quartet (D) Septet
Ans: D
48. Striagraphy an instrumental technique; is best used to examine:
(A) Bite marks (B) Skid marks (C) Tool marks (D) Ligature marks
Ans: C
49. How many oxygen atoms lined up in a row would fit in a one nanometer space?
(A) 1nm (B) One (C) Seven (D) Seventy
Ans: C
50. The thermal stability of a nano tube is seen up to ............... K in air.
(A) 100 (B) 1000 (C) 2000 (D) 3100
Ans: B
(A) Simple microscope (B) Compound microscope (C) Comparison microscope (D) Fluorescent microscope.
Ans: C
2. Encrypted Security Payload (ESP) is an extension that provides
(A) Stability (B) Extension (C) Reliability (D) Confidentiality
Ans: D
3. Which threat is your Web application susceptible to if a user can pass specially crafted input that invokes semantic control codes?
(A) Injection (B) Insecure direct object references (C) Failure to restrict URL access (D) Insufficient transport layer protection
Ans: A
4. Which control construct can be used to perform an SQL injection attack?
(A) Single quote (‘) (B) Null (\0) byte (C) Less than sign(<) (D) Greater than sign(>)
Ans: A
5. Laboratories seek accreditation from the:
(A) Home Office (B) Foreign Bodies (C) NABL (D) NAAC
Ans: C
6. Corroborative evidence is the term used for:
(A) Evidence which supports other evidence (B) Rejection of evidence
(C) Evidence that associates certain characteristics (D) All of the above
Ans: A
7. What do you mean by corpus delict?
(A) Essence of crime (B) Place of crime (C) Type of crime (D) Person committing crime
Ans: A
8. A best example for, compressed tool marks is:
(A) Firing pin (B) Wrench (C) Knife (D) Needle
Ans: A
9. The control soil sample for matching the incriminated soil sample of foot print should be collected from
(A) Foot print itself (B) About 2-3 inches away from foot print
(C) About 1 feet away from foot print (D) More than 1 feet away from the spot
Ans: B
10. The Cross Section of Human Male beard Hair is
(A) Elliptical Shape (B) Triangular Shape (C) Circular Shape (D) Oval Shape
Ans: B
11. Which of the following methods can most effectively be used to prevent logical breach of security?
(A) operating system and other system software (B) computer architectural design
(C) distributed systems design (D) network design
Ans: A
12. An organization is surplussing its old desktop computers. Being concerned with data remanence, what measures should the organization take first?
(A) Erase the hard drives (B) Format the hard drives
(C) Activate its TEMPEST shielding (D) Clear the computers’ RAM
Ans: A
13. What is the best defense against social engineering?
(A) Spyware filters (B) Firewalls (C) Data leakage protection (DLP) (D) Security awareness training
Ans: D
14. Potential energy source for inducing fusion reaction is
(A) x-ray (B) laser (C) ultraviolet (D) microwave
Ans: B
15. Principle of laser is
(A) spontaneous absorption (B) simulated emission (C) induced emission (D) Both (B) and (C)
Ans: D
16. In normal population, the number of atoms in the
(A) Excited state is more. (B) Ground state is more (C) Equal in ground state and excited state (D) Ground state is zero
Ans: B
17. The ratio of speed of light in vacuum to the speed of light in a particular medium is known as the medium’s ............…
(A) Retention time (B) Birefringence (C) Polarization (D) Refractive index
Ans: D
18. How many normal modes of vibrational are possible for a benzene molecule?
(A) 6 (B) 12 (C) 15 (D) 30
Ans: D
19. Which one from the following statements is FALSE about the NMR experiment?
(A) The energy required to flip the spin of a proton is in the infrared region of the electromagnetic spectrum.
(B) The energy difference between the two spin states depends on the strength of the magnetic field.
(C) When energy absorption occurs, the nuclei are said to be in resonance with the electromagnetic radiation.
(D) When a proton is aligned with the magnetic field, its energy is lower than when it is aligned against the magnetic field.
Ans: A
20. Determine the values of A,B,C and D that make the sum term A+B+C+D equal to zero and OR gate with schematic “bubbles” on its Inputs performs the same functions as a(n) ............... gate
(A) NOR (B) OR (C) NOT (D) NAND
Ans: D
21. Which type of gate can be used to add two bits?
(A) Ex-OR (B) Ex-NOR (C) Ex-NAND (D) NOR
Ans: A
22. The storage element for a static RAM is the ............…
(A) Diode (B) Resistor (C) Capacitor (D) Flip-flop
Ans: D
23. Which of the following is not a basic Boolean operation?
(A) OR (B) NOT (C) AND (D) FOR
Ans: D
24. For quality control of Portland cement, the test essentially done is
(A) Tensile Strength (B) Setting Time (C) Soundness (D) All
Ans: D
25. The type of lime used in lime concrete is:
(A) Fat lime (B) Poor Lime (C) Slaked Lime (D) Hydraulic lime
Ans: D
26. The usual proportion of ingredients in reinforced cement concrete is
(A) Portland cement (1 part), clean sand (2 to 4 parts) and coarse aggregate (1 to 2 parts)
(B) Portland cement (1 part), clean sand (1 to 2 parts) and coarse aggregate (2 to 4 parts)
(C) Portland cement (1 part), clean sand and coarse aggregate (2 to 4 parts)
(D) None of the above
Ans: B
27. Blast furnace slag cement
(A) Develops low heat of hydration (B) Has less early strength
(C) Develops high heat of hydration (D) Both (A) and (B)
Ans: D
28. Hydration of cement is due to the chemical action of water with
(A) dicalcium silicate (B) tricalcium silicate (C) tricalcium aluminate (D) all of these
Ans: D
29. When an external magnetic field is applied to a magnetic field, what happens to the protons in the sample?
(A) All protons align with the field (B) All proton align opposite to the field.
(C) All proton assume a random orientation (D) Some proton align with the field and some align opposite.
Ans: D
30. Heat Resistant Glass contains more Silica (75%- 80%) and upto 15% :
(A) Lead Oxide (B) Aluminium Oxide (C) Boron Trioxide (D) Magnesium oxide
Ans: C
31. Which of the following material can be used for casting the detailing of tool marks?
(A) Plaster Of Paris (B) Plasticine (C) Wax (D) Woodsmetal
Ans: B
32. Which is typically the longest :
(A) Bit (B) Byte (C) Nibble (D) Word
Ans: D
33. The base of the hexadecimal system is:
(A) Eight (B) Sixteen (C) Ten (D) Two
Ans: B
34. The Indian standard code specifies that the crushing strength for which the mix should be designed in the laboratory should be
(A) 1.25 (B) 1.5 (C) 2 (D) 2.5
Ans: A
35. Li nucleus has three protons and four neutrons. Mass of Li is 7.0.6005 a.m.u., Mass of proton is 1.007277 a.m.u. and Mass of neutron is 1.008665 a.m.u. Mass defect of Lithium nucleus in a.m.u. is:
(A) 0.4050 a.m.u. (B) 0.04052 a.m.u.
(C) 0.04055 a.m.u. (D) 0.04048 a.m.u.
Ans: C
36. The noise margin for a standard TTL gate is
(A) 1.0 V (B) 0.4 V (C) 1.4 V (D) 0.8 V
Ans: B
37. In the differential amplifier circuit, which of the following terminals are connected together?
(A) Bases (B) Emitters (C) Collectors (D) One base to another collector
Ans: B
38. The 2’s complement of the number 1101101 is
(A) 0101110 (B) 0111110 (C) 0110010 (D) 0010011
Ans: D
39. DeMorgan’s first theorem shows the equivalence of
(A) OR gate and Exclusive OR gate. (B) NOR gate and Bubbled AND gate.
(C) NOR gate and NAND gate. (D) NAND gate and NOT gate
Ans: B
40. Efficiency of the full wave rectifier is
(A) 40.6% (B) 81.2% (C) 42.6% (D) 85.25%
Ans: B
41. Microscopes that are ............... will remain nearly focused after the low power objective lens is changed to the high power objective lens. (A) Monocular (B) Parcentered (C) Parfocal (D) Properly adjusted
Ans: A
42. A microscope has a 4x ocular lens and a 10x objective, what is this microscope’s total magnification
(A) 4x (B) 14x (C) 40x (D) 400x
Ans: C
43. Besides silica, the main constituent of Gypsum soil is
(A) Calcium carbonate (B) Calcium sulphate (C) Ferric oxide (D) Aluminium oxide
Ans: B
44. Arrange in Sequence : Soil Examination can be done by following methods:
(i) Mineral Analysis
(ii) Density determination
(iii) Color Examination
(iv) Enzymatic analysis
Codes :
(A) (i), (iv), (iii) and (ii)
(B) (iii), (ii), (i) and (iv)
(C) (ii), (i), (iii) and (iv)
(D) (iv), (ii), (iii) and (i)
Ans: B
45. Two glass fragments can be compared with the help of :
(A) Physical matching (B) Refractive index (C) Density gradient tube (D) All of the above
Ans: D
46. The darkness of wave form of speech samples reflects :
(A) Time (B) Fundamental Frequency (C) Amplitude (D) Intensity
Ans: D
47. What is the splitting pattern of the methylene protons in propane?
(A) Doublet (B) Triplet (C) Quartet (D) Septet
Ans: D
48. Striagraphy an instrumental technique; is best used to examine:
(A) Bite marks (B) Skid marks (C) Tool marks (D) Ligature marks
Ans: C
49. How many oxygen atoms lined up in a row would fit in a one nanometer space?
(A) 1nm (B) One (C) Seven (D) Seventy
Ans: C
50. The thermal stability of a nano tube is seen up to ............... K in air.
(A) 100 (B) 1000 (C) 2000 (D) 3100
Ans: B
51. Stature of an individual is approximately ............... times of foot length of a person
(A) 6.5 (B) 8.2 (C) 7.5 (D) 5.9
Ans: A
52. Human hair when examined under microscope will reveal
(A) Thick cortex and thin medulla (B) Thin cortex and thick medulla
(C) Cortex and medulla with equal thickness (D) None of the above
Ans: A
53. The annealing temperature for ordinary glass is
(A) 200° F to 350° F (B) 100° F to 250° F (C) 500° F to 650° F (D) 850° F to 900° F
Ans: D
54. In the structure of fullerene each carbon atom forms covalent bonds with ............... other carbon atoms.
(A) one (B) two (C) three (D) four
Ans: C
55. In building procedures, Curing means
(A) Preserves the properties of concrete (B) Prevents the loss of water by evaporation (C) Reduces the shrinkage of concrete (D) All
Ans: D
56. Construction joints are provided by
(A) Where the member is supported by the other member (B) At 18m apart in huge structures
(C) In concrete wall at sill level of windows (D) All
Ans: D
57. Separation of the coarse aggregate from mortar is called
(A) Bleeding (B) Segregation
(C) Compaction (D) none of the these
Ans: B
58. Which of the following statements is least accurate regarding the preservation of shoe/footwear evidence?
(A) Plaster of Paris is not often used to cast impressions.
(B) About 2 pounds of dental stone and 12 ounces of water are needed to cast a shoe impression.
(C) The first step in casting is the preparation of the impression.
(D) Dental stone is never used in casting impressions.
Ans: D
59. All of the following affect the quality of latent prints except ............…
(A) The surface on which the print is deposited. (B) The nature of the material contaminating the print
(C) Physical or occupational defects of the person making the print. (D) The necessary points of individuality
Ans: D
60. All of the following conclusions can be established from hair evidence except…..
(A) The direct identity of the guilty party. (B) The area of the body from which the hair came.
(C) The manner in which the hair was removed. (D) Whether the hair was bleached or dyed.
Ans: A
61. The national database for identification of fingerprints is:
(A) IBIS (B) BDAS (C) AFIS (D) NJIS
Ans: C
62. RDX is belongs to ............... family
(A) Cyclo-tri methylene-tri amines (B) Cyclo-di amine (C) Cyclo amine (D) Cyclo dimethyl di amines
Ans: A
63. What kind of signals are used in speaker recognition?
(A) Acoustic Radiations (B) Electromagnetic radiations (C) Electric Signals (D) Radar Radiation
Ans: A
64. What will be path of the Bullet if fired in vacuum at an angle of 90 degree?
(A) Parabolic (B) Curvy (C) Straight line (D) Upwards
Ans: C
65. Drill marks well defined as:
(A) Single action striation mark (B) Compression mark (C) Repeated action striation mark (D) Mixed marks
Ans: C
66. The resistance of series resistor required to limit the current through a LED (Light Emitting Diode) to 20 mA with a forward voltage drop of 1.6 V when connected to a 10 V supply?
(A) 120 Ω (B) 220 Ω (C) 320 Ω (D) 420 Ω
Ans: D
67. The element for which absorption coefficient is larger for a given wave length in X-ray is
(A) Lithium (B) Lead (C) Copper (D) Aluminium
Ans: B
68. Rootkits can be difficult to detect because:
(A) They are encrypted (B) They are polymorphic
(C) They reside in ROM instead of the hard drive (D) They use techniques to hide themselves
Ans: D
69. A user, Aman, has posted a link on a web site that causes unsuspecting users to transfer money to Bill if they click the link. The link will only work for users who happen to be authenticated to the bank that is the target of the link. This is known as:
(A) Cross site request forgery (B) Cross-site scripting (C) Broken authentication (D) Replay attack
Ans: A
70. Which threat can occur when a Web application fails to validate a client’s access to a resource?
(A) Injection (B) Cross-site scripting (C) Insecure direct object reference (D) Cross-site request forgery
Ans: C
71. The Superblock is required for
(A) Description of the basic size and shape of this file system. (B) This is the inode number of the first inode in the file system.
(C) The number of free blocks in the file system (D) All of the above
Ans: D
72. A computer running the Windows operating system has nearly exhausted available physical memory for active processes. In order to avoid exhausting all available memory, what should the operating system begin doing?
(A) Swapping (B) Paging (C) Killing old processes (D) Running the garbage collector
Ans: B
73. The innermost portion of an operating system is known as:
(A) Kernel (B) Core (C) Ring (D) Process
Ans: A
74. The size of packets in an ATM networks is:
(A) 53 bytes (B) 1500 bytes (C) 1544 bytes (D) Variable, from 64 to 1500 bytes
Ans: A
75. The d.c. resistance of a crystal diode is ............... its a.c. resistance
(A) the same as (B) more than (C) less than (D) none of the above
Ans: C
(A) 6.5 (B) 8.2 (C) 7.5 (D) 5.9
Ans: A
52. Human hair when examined under microscope will reveal
(A) Thick cortex and thin medulla (B) Thin cortex and thick medulla
(C) Cortex and medulla with equal thickness (D) None of the above
Ans: A
53. The annealing temperature for ordinary glass is
(A) 200° F to 350° F (B) 100° F to 250° F (C) 500° F to 650° F (D) 850° F to 900° F
Ans: D
54. In the structure of fullerene each carbon atom forms covalent bonds with ............... other carbon atoms.
(A) one (B) two (C) three (D) four
Ans: C
55. In building procedures, Curing means
(A) Preserves the properties of concrete (B) Prevents the loss of water by evaporation (C) Reduces the shrinkage of concrete (D) All
Ans: D
56. Construction joints are provided by
(A) Where the member is supported by the other member (B) At 18m apart in huge structures
(C) In concrete wall at sill level of windows (D) All
Ans: D
57. Separation of the coarse aggregate from mortar is called
(A) Bleeding (B) Segregation
(C) Compaction (D) none of the these
Ans: B
58. Which of the following statements is least accurate regarding the preservation of shoe/footwear evidence?
(A) Plaster of Paris is not often used to cast impressions.
(B) About 2 pounds of dental stone and 12 ounces of water are needed to cast a shoe impression.
(C) The first step in casting is the preparation of the impression.
(D) Dental stone is never used in casting impressions.
Ans: D
59. All of the following affect the quality of latent prints except ............…
(A) The surface on which the print is deposited. (B) The nature of the material contaminating the print
(C) Physical or occupational defects of the person making the print. (D) The necessary points of individuality
Ans: D
60. All of the following conclusions can be established from hair evidence except…..
(A) The direct identity of the guilty party. (B) The area of the body from which the hair came.
(C) The manner in which the hair was removed. (D) Whether the hair was bleached or dyed.
Ans: A
61. The national database for identification of fingerprints is:
(A) IBIS (B) BDAS (C) AFIS (D) NJIS
Ans: C
62. RDX is belongs to ............... family
(A) Cyclo-tri methylene-tri amines (B) Cyclo-di amine (C) Cyclo amine (D) Cyclo dimethyl di amines
Ans: A
63. What kind of signals are used in speaker recognition?
(A) Acoustic Radiations (B) Electromagnetic radiations (C) Electric Signals (D) Radar Radiation
Ans: A
64. What will be path of the Bullet if fired in vacuum at an angle of 90 degree?
(A) Parabolic (B) Curvy (C) Straight line (D) Upwards
Ans: C
65. Drill marks well defined as:
(A) Single action striation mark (B) Compression mark (C) Repeated action striation mark (D) Mixed marks
Ans: C
66. The resistance of series resistor required to limit the current through a LED (Light Emitting Diode) to 20 mA with a forward voltage drop of 1.6 V when connected to a 10 V supply?
(A) 120 Ω (B) 220 Ω (C) 320 Ω (D) 420 Ω
Ans: D
67. The element for which absorption coefficient is larger for a given wave length in X-ray is
(A) Lithium (B) Lead (C) Copper (D) Aluminium
Ans: B
68. Rootkits can be difficult to detect because:
(A) They are encrypted (B) They are polymorphic
(C) They reside in ROM instead of the hard drive (D) They use techniques to hide themselves
Ans: D
69. A user, Aman, has posted a link on a web site that causes unsuspecting users to transfer money to Bill if they click the link. The link will only work for users who happen to be authenticated to the bank that is the target of the link. This is known as:
(A) Cross site request forgery (B) Cross-site scripting (C) Broken authentication (D) Replay attack
Ans: A
70. Which threat can occur when a Web application fails to validate a client’s access to a resource?
(A) Injection (B) Cross-site scripting (C) Insecure direct object reference (D) Cross-site request forgery
Ans: C
71. The Superblock is required for
(A) Description of the basic size and shape of this file system. (B) This is the inode number of the first inode in the file system.
(C) The number of free blocks in the file system (D) All of the above
Ans: D
72. A computer running the Windows operating system has nearly exhausted available physical memory for active processes. In order to avoid exhausting all available memory, what should the operating system begin doing?
(A) Swapping (B) Paging (C) Killing old processes (D) Running the garbage collector
Ans: B
73. The innermost portion of an operating system is known as:
(A) Kernel (B) Core (C) Ring (D) Process
Ans: A
74. The size of packets in an ATM networks is:
(A) 53 bytes (B) 1500 bytes (C) 1544 bytes (D) Variable, from 64 to 1500 bytes
Ans: A
75. The d.c. resistance of a crystal diode is ............... its a.c. resistance
(A) the same as (B) more than (C) less than (D) none of the above
Ans: C