PSC Vocational Teacher in Computer Science Model Questions and Answers
51. A packet switching network is:
(A) Free
(B) Allows communication channels to be shared among more than one user
(C) Can reduce the cost of using an information utility
(D) Both (A) and (B)
Answer: B
52. Routing algorithms are of …………… types.
(A) 4 (B) 3
(C) 1 (D) 2
Answer: D
53. Expansion of CRC:
(A) Cyclic Redundancy Code (B) Cyclic Redundancy Check
(C) Cyclic Repeating Code (D) None of these
Answer: B
54. The sending and receiving TCP entities exchange data in the form of:
(A) Segments (B) Packets
(C) Fragments (D) None of these
Answer: A
55. A UDP length field includes the ………….. byte header and the ……………
(A) 16, checksum (B) 4, checksum
(C) 16, data (D) 8, data
Answer: D
56. RARP expands to:
(A) Remote Address Resolution Protocol
(B) Routing Address Resolution Protocol
(C) Relocation Address Resolution Protocol
(D) None of these
Answer: D
57. Email system comprises …………… sub systems.
(A) 2 (B) 3
(C) 4 (D) none of these
Answer: A
58. The error correcting and detecting properties of a code depends on its:
(A) code word (B) parity bits
(C) hamming distance (D) none of these
Answer: X
59. Which layer functions as liaison between user support layers and network support layers?
(A) Network (B) Physical
(C) Transport (D) Session
Answer: C
60. IPV6 has …………. bits address.
(A) 32 (B) 64
(C) 128 (D) none of these
Answer: C
61. UML is a de facto standard for:
(A) Procedure oriented (B) Object oriented
(C) Flow oriented (D) None
Answer: B
62. The state of an object is represented as a set of object …………..
(A) Functions (B) Operations
(C) Classes (D) Attributes
Answer: D
63. ………………….. consists of focusing on essential aspects of an entity and ignoring accidental properties.
(A) Encapsulation (B) Abstraction
(C) Polymorphism (D) Inheritance
Answer: B
64. Component diagrams are used to describe the ………….. artifacts of a system.
(A) Virtual (B) Logical
(C) Physical (D) None of these
Answer: C
65. In a state based diagram the transitions are represented by …………….. between nodes.
(A) Line (B) Dotted line
(C) Double line (D) Arc
Answer: X
66. ……………… is a measure of interdependence of two objects.
(A) Cohesion (B) Coupling
(C) Encapsulation (D) None of these
Answer: B
67. The ……………. connector bridges a component’s required interface with the provided interface of another component.
(A) Delegation (B) Assembly
(C) Line (D) None of these
Answer: B
68. ……………….. behaviour in a class interface is behaviour that simply doesn’t belongs to that class and its objects.
(A) Illegal (B) Irrelevant
(C) Dangerous (D) None of these
Answer: X
69. In software development, ………………. highlights the designer’s purpose in creating a particular module.
(A) Behaviour (B) Interface
(C) States (D) Cohesion
Answer: D
70. Mix-in classes encourage code reuse and avoid pathologies associated with …………. inheritance.
(A) Hybrid (B) Multiple
(C) Multi level (D) Single
Answer: B
71. Demography is used to calculate:
(A) Life tables (B) Wild tables
(C) Biotic tables (D) None
Answer: A
72. The main nationalist party, the Indian National Congress had been founded in ……………..
(A) 1856 (B) 1885
(C) 1869 (D) 1872
Answer: B
73. The study of soil science is:
(A) Geology (B) Pedology
(C) Palaeontology (D) Geophysics
Answer: B
74. The river Ganga’s most Commercially and Western-most Channel to the bay of Bengal is:
(A) Calcutta (B) Hooghly
(C) Goalanda (D) Farakka
Answer: B
75. When winds blow against a range of mountains the air is forced to ascend resulting:
(A) Precipitation (B) Rain
(C) Violent wind (D) None
Answer: A
