In C++, polymorphism requires: (A) Inheritance only (B) Virtual functions only (C) References only (D) Inheritance, Virtual functions and references

In C++, polymorphism requires: (A) Inheritance only (B) Virtual functions only (C) References only (D) Inheritance, Virtual functions and references
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(D) Inheritance, Virtual functions and references 
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Which of the following correctly describes overloading of functions? (A) Virtual polymorphism (B) Transient polymorphism (C) Ad-hoc polymorphism (D) Pseudo polymorphism

Description : Which of the following correctly describes overloading of functions? (A) Virtual polymorphism (B) Transient polymorphism (C) Ad-hoc polymorphism (D) Pseudo polymorphism

Last Answer : (C) Ad-hoc polymorphism

…………. Is the process of creating new classes, called derived classes from existing classes called base class. A) Inheritance B) Encapsulation C) Polymorphism D) Overloading

Description : …………. Is the process of creating new classes, called derived classes from existing classes called base class. A) Inheritance B) Encapsulation C) Polymorphism D) Overloading

Last Answer : A) Inheritance

………… enable us to hide, inside the object, both the data fields and the methods that act on that data. A) Encapsulation B) Polymorphism C) Inheritance D) Overloading

Description : ………… enable us to hide, inside the object, both the data fields and the methods that act on that data. A) Encapsulation B) Polymorphism C) Inheritance D) Overloading

Last Answer : A) Encapsulation

.................. allows to create classes which are derived from other classes, so that they automatically include some of its "parent's" members, plus its own members. (A) Overloading (B) Inheritance (C) Polymorphism (D) Encapsulation

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Last Answer : (B) Inheritance

Module design is used to maximize cohesion and minimize coupling. Which of the following is the key to implement this rule? (A) Inheritance (B) Polymorphism (C) Encapsulation (D) Abstraction

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Last Answer : (C) Encapsulation

Which of the following statement(s) regarding a linker software is/are true? I. A function of a linker is to combine several object modules into a single load module. II. A function of a linker is to replace absolute references in an object module by symbolic references to locations in other modules. (1) Only I (2) Only II (3) Both I and II (4) Neither I nor Il

Description : Which of the following statement(s) regarding a linker software is/are true? I. A function of a linker is to combine several object modules into a single load module. II. A function of a linker is to replace absolute ... modules. (1) Only I (2) Only II (3) Both I and II (4) Neither I nor Il

Last Answer : Answer: 1

Which among the following definitions are correct: a) Object - Any entity that has state and behavior is known as an object. b) Class - Collection of objects is called class. It is logical entity. c) Inheritance -When one object acquires all the properties and behaviors of parent object its knonw as inheritance. It provides code re-usability and is used to achieve run time polymorphism. d) All of the above e) None of These

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Which of the following cloud concept is related to pooling and sharing of resources? a) Polymorphism b) Abstraction c) Virtualization d) None of the mentioned

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What is Polymorphism? How is it implemented in Java?

Description : What is Polymorphism? How is it implemented in Java?

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In .............., the bodies of the two loops are merged together to form a single loop provided that they do not make any references to each other. (A) Loop unrolling (B) Strength reduction (C) Loop concatenation (D) Loop jamming

Description : In .............., the bodies of the two loops are merged together to form a single loop provided that they do not make any references to each other. (A) Loop unrolling (B) Strength reduction (C) Loop concatenation (D) Loop jamming

Last Answer : (D) Loop jamming

Which of the following are the principles tasks of the linker? I. Resolve external references among separately compiled program units. II. Translate assembly language to machine code. III. Relocate code and data relative to the beginning of the program. IV. Enforce access-control restrictions on system libraries. (A) I and II (B) I and III (C) II and III (D) I and IV

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Last Answer : (B) I and III

With suitable example, describe use of virtual function in polymorphism.

Description : With suitable example, describe use of virtual function in polymorphism.

Last Answer : In order to achieve polymorphism, objects belonging to different classes should be able to respond to the same message at different instances which initiates the use of single pointer variable to refer to objects of ... void accept() { coutroll; coutname; } virtual void display() { cout

What is the benefit of Inheritance?

Description : What is the benefit of Inheritance?

Last Answer : A: It is a very useful feature as it provides the concept of reusability. Also, it allows us to include or remove any features to an existing class without modifying it.

What is Inheritance? How is it implemented in Java?

Description : What is Inheritance? How is it implemented in Java?

Last Answer : A: The ability of a class to adopt/share the properties (data and functions) completely or partially from another class is called Inheritance. In Java, it is implemented by the use of the keyword, extends.

....................... is the key to .................. A) Serialization, persistence B) Persistence, inheritance C) Inheritance, object D) Persistence, serialization

Description : ....................... is the key to .................. A) Serialization, persistence B) Persistence, inheritance C) Inheritance, object D) Persistence, serialization

Last Answer : A) Serialization, persistence

The concept of multiple inheritance is implemented in Java by A) extending two or more classes B) extending one class and implementing one or more interfaces C) implementing two or more interfaces D) both B and C

Description : The concept of multiple inheritance is implemented in Java by A) extending two or more classes B) extending one class and implementing one or more interfaces C) implementing two or more interfaces D) both B and C

Last Answer : D) both B and C

The concept of multiple inheritance is implemented in Java by A) extending two or more classes B) extending one class and implementing one or more interfaces C) implementing two or more interfaces D) both B and C

Description : The concept of multiple inheritance is implemented in Java by A) extending two or more classes B) extending one class and implementing one or more interfaces C) implementing two or more interfaces D) both B and C

Last Answer : D) both B and C

State true or false. i) init() is called after start() in applet ii) applets are used for networking iii) inheritance is a part of Java Foundation Classes iv) final does not prevent inheritance A) i-true, ii-true, iii-false, iv-true B) i-false, ii-false, iii-false, iv-false C) i-true, ii-true, iii-true, iv-true D) i-true, ii-false, iii-false, iv-false

Description : State true or false. i) init() is called after start() in applet ii) applets are used for networking iii) inheritance is a part of Java Foundation Classes iv) final does not prevent inheritance A) i-true, ii- ... C) i-true, ii-true, iii-true, iv-true D) i-true, ii-false, iii-false, iv-false

Last Answer : B) i-false, ii-false, iii-false, iv-false

....................is the key to ........................ A) Serialization, persistence B) Persistence, inheritance C) Inheritance, object D) Persistence, serialization

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Last Answer : C) Inheritance, object

The major goal of inheritance in C++ is A) To facilitate the conversion of data types B) To help modular programming C) To facilitate the reusability of code D) To extend the capabilities of a class

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Last Answer : D) To extend the capabilities of a class

When the inheritance is private, the private methods in base class are.................. in the derived class (in C++). (A) inaccessible (B) accessible (C) protected (D) public

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Last Answer : (A) inaccessible

Consider the following two statements: (a) A publicly derived class is a subtype of its base class. (b) Inheritance provides for code reuse. Which of the following statements is correct? (A) Both the statements (a) and (b) are correct (B) Neither of the statements (a) and (b) are correct (C) Statement (a) is correct and (b) is incorrect (D) Statement (a) is incorrect and (b) is correct

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Last Answer : Answer: A

Which of the following characteristics of constructor are true. i) They should be declared in the public section. ii) They are invoked automatically when the objects are created. iii) They do not have return type and void also. iv) We cannot refer their address. v) Constructors cannot virtual. A) Only i, ii, iii and v B) Only ii, iii, iv, and v C) Only i, iii, iv and v D) All i, ii, iii, iv and v

Description : Which of the following characteristics of constructor are true. i) They should be declared in the public section. ii) They are invoked automatically when the objects are created. iii) They do not have return type and void also. ... and v C) Only i, iii, iv and v D) All i, ii, iii, iv and v

Last Answer : D) All i, ii, iii, iv and v

A process that execute only in main memory is referred to as ……………… and that allocated in disk is referred to a ……………. A) virtual memory, true memory B) virtual memory, real memory C) real memory, virtual memory D) imaginary memory, real memory

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Last Answer : C) real memory, virtual memory

A thread is usually defined as a light weight process because an Operating System (OS) maintains smaller data structure for a thread than for a process. In relation to this, which of the following statement is correct? (A) OS maintains only scheduling and accounting information for each thread. (B) OS maintains only CPU registers for each thread. (C) OS does not maintain a separate stack for each thread. (D) OS does not maintain virtual memory state for each thread.

Description : A thread is usually defined as a light weight process because an Operating System (OS) maintains smaller data structure for a thread than for a process. In relation to this, which of the following ... separate stack for each thread. (D) OS does not maintain virtual memory state for each thread.

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.............. requires that data should be made available to only authorized users. A) Data integrity B) Privacy C) Security D) None of the above

Description : .............. requires that data should be made available to only authorized users. A) Data integrity B) Privacy C) Security D) None of the above

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Consider the following statements: (a) Revised simplex method requires lesser computations than the simplex method. (b) Revised simplex method automatically generates the inverse of the current basis matrix. (c) Less number of entries are needed in each table of revised simplex method than usual simplex method. Which of these statements are correct? (A) (a) and (b) only (B) (a) and (c) only (C) (b) and (c) only (D) (a), (b) and (c)

Description : Consider the following statements: (a) Revised simplex method requires lesser computations than the simplex method. (b) Revised simplex method automatically generates the inverse of the current basis matrix. (c) Less number of entries are needed ... c) only (C) (b) and (c) only (D) (a), (b) and (c)

Last Answer : (D) (a), (b) and (c)

Which of the following are facts about a top-down software testing approach? I. Top-down testing typically requires the tester to build method stubs. II. Top-down testing typically requires the tester to build test drivers. (1) only I (2) Only II (3) Both I and II (4) Neither I nor II

Description : Which of the following are facts about a top-down software testing approach? I. Top-down testing typically requires the tester to build method stubs. II. Top-down testing typically requires the tester to build test drivers. (1) only I (2) Only II (3) Both I and II (4) Neither I nor II

Last Answer : (1) only I

Virtual constructor: Constructors cannot be virtual. Declaring a constructor as a virtual function is a syntax error. Does c++ support multilevel and multiple inheritance?

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Last Answer : Yes.

The compiled java program can run on any ..................... plateform having Java Virtual Machine (JVM) installed on it. A) program B) java C) hardware D) non java

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Last Answer : C) hardware

Which of the following information not included in memory table? A) The allocation of main memory to process. B) The allocation of secondary memory to process C) Any information needed to manage virtual memory D) Any information about the existence of file

Description : Which of the following information not included in memory table? A) The allocation of main memory to process. B) The allocation of secondary memory to process C) Any information needed to manage virtual memory D) Any information about the existence of file

Last Answer : D) Any information about the existence of file

.................. is a facility that allows programmers to address memory from a logical point of view, without regard to the main memory, physically available. A) Visual memory B) Real memory C) Virtual memory D) Secondary memory

Description : .................. is a facility that allows programmers to address memory from a logical point of view, without regard to the main memory, physically available. A) Visual memory B) Real memory C) Virtual memory D) Secondary memory

Last Answer : C) Virtual memory

..................... provides a larger sized of virtual memory but require virtual memory which provides multidimensional memory. A) Paging method B) Segmentation method C) Paging and segmentation method D) None of these

Description : ..................... provides a larger sized of virtual memory but require virtual memory which provides multidimensional memory. A) Paging method B) Segmentation method C) Paging and segmentation method D) None of these

Last Answer : B) Segmentation method

The name of the protocol which provides virtual terminal in TCP/IP model is. A) Telnet B) SMTP C) HTTP

Description : The name of the protocol which provides virtual terminal in TCP/IP model is. A) Telnet B) SMTP C) HTTP

Last Answer : A) Telnet

Which of the following is an application layer service? A) Network virtual terminal B) File transfer, access and management C) Mail service D) All of the above

Description : Which of the following is an application layer service? A) Network virtual terminal B) File transfer, access and management C) Mail service D) All of the above

Last Answer : C) Mail service

A virtual memory based memory management algorithm partially swaps out a process. This is an example of (A) short term scheduling (B) long term scheduling (C) medium term scheduling (D) mutual exclusion

Description : A virtual memory based memory management algorithm partially swaps out a process. This is an example of (A) short term scheduling (B) long term scheduling (C) medium term scheduling (D) mutual exclusion

Last Answer : (C) medium term scheduling

The virtual address generated by a CPU is 32 bits. The Translation Lookaside Buffer (TLB) can hold total 64 page table entries and a 4-way set associative (i.e. with 4- cache lines in the set). The page size is 4 KB. The minimum size of TLB tag is (A) 12 bits (B) 15 bits (C) 16 bits (D) 20 bits

Description : The virtual address generated by a CPU is 32 bits. The Translation Lookaside Buffer (TLB) can hold total 64 page table entries and a 4-way set associative (i.e. with 4- cache lines in the set). The page size is 4 KB. The minimum size of TLB tag is (A) 12 bits (B) 15 bits (C) 16 bits (D) 20 bits

Last Answer : (C) 16 bits Explanation: VirtualAddress = 32 bits PageSize = 4KB = 12 bits therefore : VPNTag = 20 bits, OffsetTag = 12 bits TLBEntryLength = VPNTag = 20 bits TotalTLBEntries = 64, 4-way implies ... therefore : TLBIndex = 4 bits TLBTag = TLBEntryLength - TLBIndex = 20 - 4 = 16 bits

A part of Windows 2000 operating system that is not portable is (A) Device Management (B) Virtual Memory Management (C) Processor Management (D) User Interface

Description : A part of Windows 2000 operating system that is not portable is (A) Device Management (B) Virtual Memory Management (C) Processor Management (D) User Interface

Last Answer : (B) Virtual Memory Management

Which of the following is not a member of class ? (A) Static function (B) Friend function (C) Const function (D) Virtual function

Description : Which of the following is not a member of class ? (A) Static function (B) Friend function (C) Const function (D) Virtual function

Last Answer : (B) Friend function

What is the most appropriate function of Memory Management Unit (MMU) ? (A) It is an associative memory to store TLB (B) It is a technique of supporting multiprogramming by creating dynamic partitions (C) It is a chip to map virtual address to physical address (D) It is an algorithm to allocate and deallocate main memory to a process

Description : What is the most appropriate function of Memory Management Unit (MMU) ? (A) It is an associative memory to store TLB (B) It is a technique of supporting multiprogramming by creating dynamic partitions ... to physical address (D) It is an algorithm to allocate and deallocate main memory to a process 

Last Answer : (C) It is a chip to map virtual address to physical address

Which of the following statements is incorrect for Parallel Virtual Machine (PVM)? (A) The PVM Communication model provides asynchronous blocking send, asynchronous blocking receive and non-blocking receive function. (B) Message buffers are allocated dynamically. (C) The PVM communication model assumes that any task can send a message to any other PVM task and that there is no limit to the size or number of such messages. (D) In PVM Model, the message order is not preserved.

Description : Which of the following statements is incorrect for Parallel Virtual Machine (PVM)? (A) The PVM Communication model provides asynchronous blocking send, asynchronous blocking receive and non-blocking receive function. ... of such messages. (D) In PVM Model, the message order is not preserved. 

Last Answer : (D) In PVM Model, the message order is not preserved.

Which of the following, in C++, is inherited in a derived class from base class ? (A) constructor (B) destructor (C) data members (D) virtual methods

Description : Which of the following, in C++, is inherited in a derived class from base class ? (A) constructor (B) destructor (C) data members (D) virtual methods

Last Answer : (C) data members

Which of the following is used to make an Abstract class ? (A) Making atleast one member function as pure virtual function (B) Making atleast one member function as virtual function (C) Declaring as Abstract class using virtual keyword (D) Declaring as Abstract class using static keyword

Description : Which of the following is used to make an Abstract class ? (A) Making atleast one member function as pure virtual function (B) Making atleast one member function as virtual function (C) Declaring as Abstract class using virtual keyword (D) Declaring as Abstract class using static keyword

Last Answer : (A) Making atleast one member function as pure virtual function

A virtual memory has a page size of 1K words. There are eight pages and four blocks. The associative memory page table contains the following entries: Image Which of the following list of virtual addresses (in decimal) will not cause any page fault if referenced by the CPU? (A) 1024, 3072, 4096, 6144 (B) 1234, 4012, 5000, 6200 (C) 1020, 3012, 6120, 8100 (D) 2021, 4050, 5112, 7100

Description : A virtual memory has a page size of 1K words. There are eight pages and four blocks. The associative memory page table contains the following entries:  Which of the following list of virtual addresses (in ... 1234, 4012, 5000, 6200 (C) 1020, 3012, 6120, 8100 (D) 2021, 4050, 5112, 7100

Last Answer : Answer: C Explanation: The pages which are not in main memory are: 1020 will not cause page fault (1024-2047) 3012 will not cause page fault (3072-4095) 6120 will not cause page fault (4096-5119) 8100 will not cause page fault (6144-7167)

Suppose that the virtual Address space has eight pages and physical memory with four page frames. If LRU page replacement algorithm is used, .............. number of page faults occur with the reference string. 0 2 1 3 5 4 6 3 7 4 7 3 3 5 5 3 1 1 1 7 2 3 4 1 (A) 11 (B) 12 (C) 10 (D) 9

Description : Suppose that the virtual Address space has eight pages and physical memory with four page frames. If LRU page replacement algorithm is used, .............. number of page faults occur with the reference string. 0 2 1 3 5 4 6 3 7 4 7 3 3 5 5 3 1 1 1 7 2 3 4 1 (A) 11 (B) 12 (C) 10 (D) 9

Last Answer : (A) 11

Which of the following is incorrect for virtual memory? (1) Large programs can be written (2) More I/O is required (3) More addressable memory available (4) Faster and easy swapping of process

Description : Which of the following is incorrect for virtual memory? (1) Large programs can be written (2) More I/O is required (3) More addressable memory available (4) Faster and easy swapping of process

Last Answer : Answer: 2

State True or False. i) A satic function can have access to only other static members (functions or variables) declared in the same class. ii) A static member function can be called using the class name (instead of its objects) A) True, True B) True, False C) False, True D) False, False

Description : State True or False. i) A satic function can have access to only other static members (functions or variables) declared in the same class. ii) A static member function can be called using the class name (instead of its objects) A) True, True B) True, False C) False, True D) False, False

Last Answer : B) True, False

Which of the following are the functions of operating system? i) recovering from errors ii) facilitating input/output iii) facilitating parallel operation iv) sharing hardware among users v) implementing user interface A) i, ii, ii, and v only B) i, ii, iii, and iv only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Description : Which of the following are the functions of operating system? i) recovering from errors ii) facilitating input/output iii) facilitating parallel operation iv) sharing hardware among users v) implementing user interface A) i, ii, ... only C) ii, iii, iv and v only D) All i, ii, iii, iv and v

Last Answer : D) All i, ii, iii, iv and v

A .................... architecture assigns only a few essential functions to the kernel, including address spaces, Inter process communication(IPC) and basic scheduling. A) Monolithic kernel B) Micro kernel C) Macro kernel D) Mini kernel

Description : A .................... architecture assigns only a few essential functions to the kernel, including address spaces, Inter process communication(IPC) and basic scheduling. A) Monolithic kernel B) Micro kernel C) Macro kernel D) Mini kernel

Last Answer : B) Micro kernel

Which of the following is/are the functions of operating system? i) Sharing hardware among users. ii) Allowing users to share data among themselves. iii) Recovering from errors. iv) Preventing users from interfering with one another. v) Scheduling resources among users. A) i, ii, iii and iv only B) ii, iii, iv and v only C) i, iii, iv and v only D) All i, ii, iii, iv and v

Description : Which of the following is/are the functions of operating system? i) Sharing hardware among users. ii) Allowing users to share data among themselves. iii) Recovering from errors. iv) Preventing users from interfering with one another. ... only C) i, iii, iv and v only D) All i, ii, iii, iv and v

Last Answer : D) All i, ii, iii, iv and v