SPSC Lecturer Computer Science Past Paper 26-01-2006
21- The type of modulation that changes the height of the signal is called:
A. Frequency
B. Phase
C. Amplitude
D. Prephase
View Answer
Answer : C. Amplitude
Description
22- The band rate:
A. is always equal to the bit rate
B. is equal to twice the bandwidth of an ideal channel
C. is not equal to the signaling rate
D. is equal to the one half the bandwidth of an ideal channel
View Answer
Answer : B. is equal to twice the bandwidth of an ideal channel
Description
23- Which control signal, on a serial cable indicates that She data set is ready:
A. RTS
B. DTR
C. DSR
D. CIs
View Answer
Answer : C. DSR
Description
24- The maximum cable length:
A. 4 Meters
B. 50 ft
C. 8 meters
D. 25 ft
View Answer
Answer : B. 50 ft
Description
25- The IEEE 802.3 10 Base 5 standard specifies which Cable type:
A. Thinnet Coax
B. Thicknet Coax
C. LTP Cat-5
D. All of these
View Answer
Answer : B. Thicknet Coax
Description
26- Which of the following devices performs protocol conversion:
A. Bridge
B. Firewall
C. Router
D. Gateway
View Answer
Answer : D. Gateway
Description
27- Which layer provides interface between AAL and Physical Layer:
A. Network Layer
B. Data Link Layer
C. ATM Layer
D. Session Layer
View Answer
Answer : C. ATM Layer
Description
28- The IP address ‘151.154.0.4’ belongs to:
A. Class C
B. Class B
C. Class A
D. None of these
View Answer
Answer : B. Class B
Description
29- Which of following is not part of packet:
A. Header
B. Parity
C. Data
D. None of these
View Answer
Answer : B. Parity
Description
30- Which of the following materials is used in manufacturing Fiber Optics:
A. Ultra Pure Glass
B. Glass Coated with plastic
C. Plastic
D. All of these
View Answer
Answer : D. All of these
Description
31- What type of language is used to access databases ______?
A. Query language
B. Structured Language
C. Records
D. MS Access
View Answer
Answer : A. Query language
Description
32- When planning a database the first step is to determine the rows and columns that together form the?
A. data structure
B. Graphs
C. file structure
D. Tables
View Answer
Answer : D. Tables
Description
33- Who and when introduced the E/R Model.
A. eben in 1976
B. eben in 1982
C. Ben in 1976
D. Ben in 1982
View Answer
Answer : C. Ben in 1976
Description
34- The wrapping of data and functions into a single unit(edited class) is known as:
A. Encapsulation
B. Class Constructor
C. Inheritance
D. Capsulation
View Answer
Answer : A. Encapsulation
Description
35- ______ is the process by which objects of one class acquire the properties of objects of another class.
A. Encapsulation
B. Global
C. Inheritance
D. Capsulation
View Answer
Answer : C. Inheritance
Description
36- _____ allows a client to treat different objects in the same way even if they were created from different classes and exhibit different behaviors.
A. Polymorphism
B. Morphing
C. Applet
D. Overloading
View Answer
Answer : A. Polymorphism
Description
37- Usually deletes any extra resources allocated by the object.
A. Constructor
B. Destructor
C. Class
D. Bean
View Answer
Answer : B. Destructor
Description
38- Method of passing arguments to a function, which takes parameter of type reference:
A. pass by reference
B. pass by value
C. pass by variable
D. none of above
View Answer
Answer : A. pass by reference
Description
39- When you define only function prototype in a base class without implementation and do the complete implementation in derived class. This base class is called ______:
A. Abstract class
B. Inheritance
C. Virtual Class
D. Friend Class
View Answer
Answer : A. Abstract class
Description
40- _____ is the practice of supplying more than one definition for a given function name in the same scope.
