JKSSB Assistant Programmer 2025 Solved Question Paper

Question 1

Which keyword is used to declare a function that returns no value?

Accepted Answer

Option B: void. In C and C++, the 'void' keyword when used as a function return type specifies that the function executes without returning any data value to the caller.

Question 2

What is the index of the first element in a C array?

Accepted Answer

Option A: 0. In the C programming language, array indexing is strictly zero-based. The first element of an array 'arr' is accessed at index 0 (i.e., arr[0]).

Question 3

What type of loop is guaranteed to execute at least once?

Accepted Answer

Option C: do-while. A 'do-while' loop is an exit-controlled loop where the loop body is executed before the terminating test expression is evaluated at the bottom, guaranteeing that statements within the loop execute at least once.

Question 4

What is the correct way to declare a pointer to an integer in C?

Accepted Answer

Option A: int *ptr;. In C, an integer pointer is declared by placing the dereference/asterisk operator '*' between the type specifier and the identifier: 'int *ptr;' (or 'int* ptr;').

Question 5

What is recursion in C?

Accepted Answer

Option B: Function that calls itself. Recursion is a programming technique in which a function calls itself directly or indirectly to solve smaller instances of a problem, terminating when a base case is reached.

Question 6

What does the & operator do in C?

Accepted Answer

Option D: Gives the address of a variable. In C, the unary '&' operator is the address-of operator. When prepended to a variable name (e.g., &x), it evaluates to the physical memory address of that variable.

Question 7

What does the following code output?
int x = 10;
int *p = &x;
printf("%d", *p);

Accepted Answer

Option B: 10. In the code snippet, pointer 'p' is assigned the memory address of variable 'x' (&x). The dereference operator '*p' retrieves the integer value stored at that address, which is 10.

Question 8

Which of the following is a valid string declaration in C?

Accepted Answer

Option B: char name[] = "John";. C does not possess a built-in primitive 'string' keyword. Strings are implemented as null-terminated character arrays, so 'char name[] = "John";' (or 'char *name = "John";') is the valid declaration.

Question 9

What will happen if fopen() fails to open a file?

Accepted Answer

Option B: It returns NULL. In standard C file I/O (<stdio.h>), if fopen() cannot open the specified file (due to missing file, access restrictions, or invalid paths), it returns a NULL pointer.

Question 10

Which of the following statements about unions is TRUE?

Accepted Answer

Option B: All members share the same memory location. In C, all members of a 'union' share the exact same starting memory location. The total size allocated for a union is equal to the size of its largest member, allowing only one member's value to be stored at any given time.

Question 11

What will sizeof(char) return in C?

Accepted Answer

Option C: 1. According to the ANSI/ISO C standard, the size of type 'char' is by definition exactly 1 byte. Therefore, sizeof(char) is always guaranteed to return 1.

Question 12

What is the output of this code?
char str[] = "Hello";
printf("%c", *(str + 1));

Accepted Answer

Option B: e. In C, 'str' decays to a pointer pointing to the first character 'H' (index 0). Pointer arithmetic 'str + 1' points to index 1 ('e'). Dereferencing with *(str + 1) outputs the character 'e'.

Question 13

Which of the following is not a component of a DBMS?

Accepted Answer

Option C: Compiler. A standard Database Management System (DBMS) architecture consists of a Query Processor, Storage/Data Manager, Buffer/File Manager, and Transaction Manager. A programming language compiler (e.g. gcc) is a development environment tool, not a DBMS component.

Question 14

Which of the following is not an advantage of a DBMS?

Accepted Answer

Option A: Data redundancy. Data redundancy (storing duplicate copies of data across multiple files) is a major disadvantage of traditional file systems. A primary advantage and purpose of a DBMS is to eliminate or strictly control data redundancy.

Question 15

An attribute in an E-R model is represented by:

Accepted Answer

Option C: Oval. In Chen's classic Entity-Relationship (E-R) diagram notation, entities are represented by Rectangles, relationships by Diamonds, and attributes by Ovals (or Ellipses).

Question 16

Which function returns the number of rows in a SQL query?

Accepted Answer

Option B: COUNT(). In SQL, the aggregate function COUNT() (e.g., COUNT(*) or COUNT(column_name)) returns the total number of rows matching the query criteria.

Question 17

What is the correct sequence to create and link two tables with a foreign key?
I. Create the parent table
II. Define the foreign key in the child table
III. Create the child table
Options:

Accepted Answer

Option B: I -> III -> II. To establish a valid foreign key relationship: First, the parent table containing the primary key must be created (I). Next, the child table must be created (III). Finally, the foreign key referencing the parent table is defined (II) (or defined inline during child creation). The correct sequence is I -> III -> II.

Question 18

In an E-R diagram, a weak entity is identified by:

Accepted Answer

Option C: Being enclosed in a double rectangle. In E-R modeling, a weak entity set (an entity set that cannot be uniquely identified by its own attributes alone and depends on an identifying owner entity set) is represented by a double rectangle.

Question 19

A foreign key in one table refers to:

Accepted Answer

Option C: A primary key in another table. A foreign key is an attribute or set of attributes in one relation (child table) that references the primary key (or candidate key) of another relation (parent table) to enforce referential integrity.

Question 20

Which clause is used with GROUP BY to filter groups?

Accepted Answer

Option C: HAVING. In SQL, the HAVING clause is specifically designed to filter groups of rows produced by the GROUP BY clause based on aggregate condition predicates. (The WHERE clause filters individual rows before grouping occurs).

Question 21

Arrange the following steps involved in query compilation in the correct order:
I. Translation of high-level query into relational algebra
II. Parsing and validating the SQL query
III. Optimization of the relational algebra query
IV. Generating an execution plan for the query
Options:

Accepted Answer

Option A: II -> I -> III -> IV. The standard query compilation phases in a relational DBMS are:
1. Parsing syntax and validating catalog metadata (II)
2. Translation into an internal relational algebra expression/parse tree (I)
3. Query Optimization using algebraic equivalences and cost models (III)
4. Code/Execution Plan Generation (IV).
Correct order: II -> I -> III -> IV.

Question 22

Which of the following SQL statements creates a foreign key constraint?

Accepted Answer

Option B: CREATE TABLE child (id INT, CONSTRAINT fk_id FOREIGN KEY (id) REFERENCES parent(id)). The complete, ANSI SQL compliant syntax to create a foreign key constraint is: 'CREATE TABLE child (id INT, CONSTRAINT fk_id FOREIGN KEY (id) REFERENCES parent(id))'.

Question 23

Consider a relation R(A, B, C) with the following functional dependencies:
1. A -> B
2. B -> C
What is the candidate key of R?

Accepted Answer

Option A: A only. To find the candidate key, compute attribute closures under F = {A -> B, B -> C}:
- A+ = {A, B, C} (since A -> B and B -> C by transitivity, A determines all attributes of R).
- B+ = {B, C} (cannot determine A).
- C+ = {C} (cannot determine A or B).
Thus, 'A only' is the minimal superkey (candidate key) of R.

Question 24

Which of the following mechanisms is most effective for preventing SQL injection attacks?

Accepted Answer

Option C: Parameterized queries and prepared statements. Parameterized queries (prepared statements) are the most effective defense against SQL injection. They separate SQL code from user-supplied data, ensuring the database engine treats all input parameters strictly as data literals rather than executable SQL statements.

Question 25

Process synchronization is necessary to:

Accepted Answer

Option C: Avoid race conditions. Process synchronization is essential in concurrent operating systems to coordinate the execution of concurrent processes sharing shared memory or resources, specifically to enforce mutual exclusion and avoid race conditions and data inconsistency.

Question 26

What is the main purpose of spooling in I/O systems?

Accepted Answer

Option C: To manage I/O by placing data in a buffer. SPOOLing (Simultaneous Peripheral Operations On-Line) buffers input/output data on secondary storage (disk) to bridge the significant operating speed disparity between the ultra-fast CPU and slow peripheral devices (such as printers and card readers).

Question 27

Which memory management technique loads the entire process into memory before execution?

Accepted Answer

Option C: Contiguous allocation. In contiguous memory allocation (such as single contiguous allocation, fixed partitions, or variable partitions), the complete logical address space of a process must be loaded contiguously into physical RAM before execution begins.

Question 28

The Banker's Algorithm is used for:

Accepted Answer

Option B: Avoiding deadlock. Dijkstra's Banker's Algorithm is a prominent deadlock avoidance algorithm. It dynamically evaluates whether granting a resource request leaves the system in a 'safe state' before actually allocating the resource.

Question 29

In fixed partitioning, if the process size is smaller than the partition size, the remaining memory is called:

Accepted Answer

Option D: Internal fragmentation. In fixed memory partitioning, when memory allocated to a partition is larger than the memory requested by the process loaded into it, the unutilized portion inside that partition is known as Internal Fragmentation.

Question 30

Which of the following scheduling algorithms allows the shortest job to execute first?

Accepted Answer

Option C: SJF. Shortest Job First (SJF) scheduling selects the process with the shortest expected CPU burst time to execute first, achieving the theoretical minimum average waiting time among all scheduling algorithms.

Question 31

About process synchronization and semaphores:
I. A binary semaphore is used for mutual exclusion.
II. Spinlocks are efficient for single-core systems.
III. Semaphores can lead to starvation if not handled properly.
IV. A race condition occurs only in single-threaded environments.
Which statements are correct?

Accepted Answer

Option B: I, II, and III only. Statements I, II, and III are correct:
- Binary semaphores (values 0 and 1) enforce mutual exclusion.
- Spinlocks can be useful for very short waits without context switches.
- Unfair semaphore queuing can lead to process starvation.
Statement IV is false because race conditions occur specifically in multi-threaded/concurrent systems.

Question 32

Consider the following file allocation techniques:
Column-A (Allocation Type)
i. Contiguous Allocation
ii. Linked Allocation
iii. Indexed Allocation
iv. Index node
Column-B (Property)
1. Simple, fast access but causes external fragmentation
2. Uses pointers; poor random access
3. Supports direct access using index block.
4. Stores metadata and block pointers in UNIX.
Which of the pairs given above is correctly matched?

Accepted Answer

Option A: i-1, ii-2, iii-3, iv-4. File system allocation matches:
- i. Contiguous Allocation -> 1 (Simple, fast direct/sequential access, but causes external fragmentation)
- ii. Linked Allocation -> 2 (Uses disk block pointers; sequential only, poor random access)
- iii. Indexed Allocation -> 3 (Direct access supported via index block)
- iv. Index node (inode) -> 4 (UNIX structure storing file metadata and direct/indirect block pointers).
Combination: i-1, ii-2, iii-3, iv-4.

Question 33

What is Belady's Anomaly in memory management?

Accepted Answer

Option A: Occurs when increasing the number of page frames increases the number of page faults.. Belady's Anomaly is a phenomenon in virtual memory page replacement (observed in FIFO algorithm) where allocating more physical page frames to a process paradoxically leads to an increase in the number of page faults for certain reference strings.

Question 34

In virtual memory, what is a page fault?

Accepted Answer

Option B: When a requested page is not in main memory. A page fault is an exception (hardware interrupt) raised by the Memory Management Unit (MMU) when an active process attempts to access a virtual memory page that is not currently mapped into physical RAM frames.

Question 35

What is the time complexity of linear search in the worst case?

Accepted Answer

Option C: O(n). In linear search, each element of an unsorted array of size n is inspected sequentially from beginning to end. In the worst case (when the target item is at the final position or absent), all n elements are examined, yielding O(n) time complexity.

Question 36

Which sorting algorithm repeatedly compares adjacent elements and swaps them if needed?

Accepted Answer

Option C: Bubble Sort. Bubble Sort operates by repeatedly stepping through the list, comparing adjacent pairs of elements, and swapping them if they are in the wrong order, causing larger elements to 'bubble' to the top.

Question 37

Which tree traversal method visits nodes in the order: Left, Root, Right?

Accepted Answer

Option B: In-order. In a binary tree, In-order traversal recursively visits the Left subtree, then visits the current Root node, and finally traverses the Right subtree (Left -> Root -> Right). For a Binary Search Tree (BST), in-order traversal visits keys in ascending sorted order.

Question 38

Arrange the operations in correct order to delete an element from the rear of a queue implemented using a singly linked list:
I. Traverse to second last node
II. Set its next to NULL
III. Free the last node
IV. Check if queue is empty
Choose the correct option:

Accepted Answer

Option A: IV -> I -> III -> II. To delete from the rear in a singly linked list queue: First check underflow by verifying if queue is empty (IV). Traverse from head to the second-to-last node (I). Free the dynamic memory of the last node (III). Finally, set the second-to-last node's next pointer to NULL (II). Order: IV -> I -> III -> II.

Question 39

Which condition indicates a queue is full in a circular array implementation?

Accepted Answer

Option B: front == rear + 1. In a circular queue of capacity n using front and rear pointers, the full condition (when one position is left empty to distinguish full from empty) is satisfied when (rear + 1) % n == front, or conceptually front == rear + 1.

Question 40

Which of the following is NOT a characteristic of structured programming?

Accepted Answer

Option B: Use of goto statements. Structured programming is built upon single-entry single-exit control structures (sequences, selections, and iterations) and modular subroutines. Unconstrained jumps using 'goto' statements break structured flow and are explicitly forbidden or avoided.

Question 41

For an array declared as int arr[5][5]; in C, the element arr[2][3] is accessed in memory at:

Accepted Answer

Option A: BaseAddress + ((2*5)+3) * sizeof(int). C stores multidimensional arrays in Row-Major order. For an array arr[M][N], the memory address of element arr[i][j] is calculated as: Address = BaseAddress + (i * N + j) * sizeof(datatype). Here i=2, j=3, N=5 (columns per row), giving BaseAddress + ((2*5)+3) * sizeof(int).

Question 42

Which of the following statements about recursion is FALSE?

Accepted Answer

Option D: Tail recursion is less efficient than non-tail recursion. Statement D is FALSE because tail recursion (where the recursive call is the final operation in the function) can be optimized by modern compilers via Tail Call Elimination into a simple loop, making it just as memory-efficient and fast as iteration and MORE efficient than non-tail recursion.

Question 43

What will be the state of a queue after performing the following operations on an empty queue: enqueue(10), enqueue(20), dequeue(), enqueue(30)?

Accepted Answer

Option B: Front = 20, Rear = 30. Tracing queue operations:
1. enqueue(10) -> [10] (Front=10, Rear=10)
2. enqueue(20) -> [10, 20] (Front=10, Rear=20)
3. dequeue() -> removes front item 10 -> [20] (Front=20, Rear=20)
4. enqueue(30) -> [20, 30] (Front=20, Rear=30).
Therefore, Front = 20 and Rear = 30.

Question 44

Which of the following best describes the difference between top-down and bottom-up problem solving?

Accepted Answer

Option C: Bottom-up solves small sub-problems first and integrates them. Bottom-up design starts by constructing and testing individual low-level fundamental sub-modules first, then combines and integrates them into larger subsystems. In contrast, Top-down design decomposes the overall high-level system into progressively finer modules.

Question 45

In a binary tree, the number of null pointers is equal to:

Accepted Answer

Option C: Number of nodes + 1. A binary tree with N nodes possesses exactly 2N pointer links (each node has left and right child pointers). In any tree with N nodes, exactly N - 1 pointers point to existing child nodes (edges). Therefore, the number of null pointers is 2N - (N - 1) = N + 1.

Question 46

In C++, the concept of data hiding is implemented using:

Accepted Answer

Option C: Private members. In C++, data hiding is enforced through encapsulation by declaring class data attributes under the 'private' access specifier, preventing unauthorized direct access and tampering from external functions.

Question 47

In C++, which symbol is used to indicate inheritance?

Accepted Answer

Option A: :. In C++, a single colon ':' is used in the class declaration syntax to denote inheritance from a base class, e.g., 'class Derived : public Base { ... };'.

Question 48

What is function overloading in C++?

Accepted Answer

Option B: Defining multiple functions with the same name but different parameters. Function overloading in C++ is a feature of compile-time polymorphism that allows multiple functions within the same scope to share the same name, provided they differ in parameter count, parameter types, or sequence.

Question 49

What does the eof() function do in file handling?

Accepted Answer

Option C: Returns true if end of file is reached. In C++ file stream processing (<fstream>), the stream member function eof() returns true (non-zero) if the End-Of-File condition has been reached on the associated input file stream.

Question 50

What is runtime polymorphism achieved through in C++?

Accepted Answer

Option C: Virtual functions. In C++, runtime (dynamic) polymorphism and late binding are achieved using 'virtual functions' in base classes, which are resolved dynamically at runtime through virtual method tables (vtables) via base class pointers or references.

Question 51

Evaluate these statements about data abstraction and data hiding in C++:
I. Data abstraction is achieved through access specifiers like private and protected.
II. Data hiding prevents external code from accessing internal class data directly.
III. Data abstraction and data hiding are unrelated concepts.
IV. Abstraction focuses on what an object does, not how it does it.
Which are true?

Accepted Answer

Option A: I, II, and IV only. Statements I, II, and IV are correct. Statement III is false because data abstraction (exposing only essential public interfaces) and data hiding (shielding implementation details behind private/protected scopes) are intimately complementary aspects of OOP encapsulation.

Question 52

Which of the following best differentiates Object Oriented Programming from Procedure Oriented Programming?

Accepted Answer

Option C: OOP models programs using objects that encapsulate both data and behavior. Object-Oriented Programming (OOP) fundamentally structures software around 'objects' that encapsulate both data attributes and the operational methods (behavior) that manipulate that data, whereas Procedure-Oriented Programming (POP) treats data and functions as separate entities with data moving freely between procedures.

Question 53

Consider the following function:
int sum(int a, int b) { return a + b; }
float sum(float a, float b) { return a + b; }
What concept is demonstrated here?

Accepted Answer

Option C: Function overloading. Defining two functions with identical identifier names 'sum' within the same scope that differ in their parameter data types (int vs float) is the textbook definition of Function Overloading.

Question 54

What will be the output of the following code?
int x = 5;
int y = ++x * 2;
cout << y;

Accepted Answer

Option B: 12. The pre-increment operator '++x' increments the value of x from 5 to 6 before its value is used in the expression. Then 6 * 2 evaluates to 12, which is assigned to y and printed.

Question 55

Identify the correct statement regarding multiple inheritance:

Accepted Answer

Option B: The diamond problem does not occur in C++ due to virtual inheritance.. In C++, the classic 'Diamond Problem' of multiple inheritance (inheriting duplicate instances of a shared ancestor base class) is prevented and resolved through the use of Virtual Inheritance (declaring the common base class as 'virtual').

Question 56

Which of the following statements about pointers to member functions is true?

Accepted Answer

Option B: They must be invoked on an object or object pointer.. A pointer to a non-static member function in C++ requires the context of an actual class instance to execute (to supply the implicit 'this' pointer). It must be invoked using either the pointer-to-member operator (obj.*pmf) or (ptr->*pmf).

Question 57

In the context of file I/O in C++, which of the following statements is false?

Accepted Answer

Option A: ofstream is used to read from a file. Statement A is FALSE because 'ofstream' stands for Output File Stream and is used exclusively to write data to a file. Reading from a file is performed using 'ifstream' (Input File Stream).

Question 58

Which of the following is not allowed in a class definition in C++?

Accepted Answer

Option D: Use of goto statement. Executable procedural statements such as 'goto label;' can only appear inside function or method bodies. They are strictly illegal directly within the declarative body of a class definition.

Question 59

What is the extension of a compiled Java file?

Accepted Answer

Option C: .class. When Java source code (.java) is compiled using the javac compiler, it generates platform-independent intermediate bytecode stored in a file with the '.class' extension.

Question 60

Which method is used to start a thread in Java?

Accepted Answer

Option C: start(). In Java, calling the start() method of java.lang.Thread creates a new operating system execution thread and invokes the thread's run() method asynchronously in the new thread context.

Question 61

What does System.out.println(10 + 20 + "Java"); print?

Accepted Answer

Option A: 30Java. In Java, the '+' operator evaluates left-to-right. First, the integer addition 10 + 20 is evaluated to 30. Then, 30 + "Java" performs string concatenation, resulting in the string "30Java".

Question 62

What is garbage collection in Java?

Accepted Answer

Option B: Automatic memory cleanup of unused objects. Garbage Collection (GC) in Java is an automated daemon thread process managed by the JVM that identifies and reclaims heap memory occupied by objects that are no longer reachable or referenced by any active thread.

Question 63

Match the casting types with their example:
Column - A
i. Widening Cast
ii. Narrowing Cast
iii. Upcasting
iv. Downcasting
Column - B
1. int i = (int) 3.5;
2. double d = 5;
3. Animal a = new Dog();
4. Dog d = (Dog) new Animal();
Options:

Accepted Answer

Option A: i-2, ii-1, iii-3, iv-4. Type casting classifications in Java:
- i. Widening Cast -> 2 (implicit promotion from smaller to larger primitive type: int to double 'double d = 5;')
- ii. Narrowing Cast -> 1 (explicit truncation from larger to smaller primitive type: 'int i = (int) 3.5;')
- iii. Upcasting -> 3 (assigning child object to parent class reference: 'Animal a = new Dog();')
- iv. Downcasting -> 4 (explicit cast of parent reference to child type: 'Dog d = (Dog) new Animal();').
Matches: i-2, ii-1, iii-3, iv-4.

Question 64

Which of the following statements about Java arrays is true?

Accepted Answer

Option C: Arrays are objects in Java. In Java, arrays are dynamically created reference objects that inherit directly from java.lang.Object and have a fixed length once instantiated in memory.

Assistant Programmer2025

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JKSSB — Assistant Programmer (2025)

Which keyword is used to declare a function that returns no value?

What is the index of the first element in a C array?

What type of loop is guaranteed to execute at least once?

What is the correct way to declare a pointer to an integer in C?

What is recursion in C?

What does the & operator do in C?

What does the following code output?int x = 10;int p = &x; printf("%d", p);

Which of the following is a valid string declaration in C?

What will happen if fopen() fails to open a file?

Which of the following statements about unions is TRUE?

What will sizeof(char) return in C?

What is the output of this code?char str[] = "Hello";printf("%c", *(str + 1));

Which of the following is not a component of a DBMS?

Which of the following is not an advantage of a DBMS?

An attribute in an E-R model is represented by:

Which function returns the number of rows in a SQL query?

What is the correct sequence to create and link two tables with a foreign key?I. Create the parent tableII. Define the foreign key in the child tableIII. Create the child tableOptions:

In an E-R diagram, a weak entity is identified by:

A foreign key in one table refers to:

Which clause is used with GROUP BY to filter groups?

Arrange the following steps involved in query compilation in the correct order:I. Translation of high-level query into relational algebraII. Parsing and validating the SQL queryIII. Optimization of the relational algebra queryIV. Generating an execution plan for the queryOptions:

Which of the following SQL statements creates a foreign key constraint?

Consider a relation R(A, B, C) with the following functional dependencies:1. A -> B2. B -> CWhat is the candidate key of R?

Which of the following mechanisms is most effective for preventing SQL injection attacks?

Process synchronization is necessary to:

What is the main purpose of spooling in I/O systems?

Which memory management technique loads the entire process into memory before execution?

The Banker's Algorithm is used for:

In fixed partitioning, if the process size is smaller than the partition size, the remaining memory is called:

Which of the following scheduling algorithms allows the shortest job to execute first?

What is Belady's Anomaly in memory management?

In virtual memory, what is a page fault?

What is the time complexity of linear search in the worst case?

Which sorting algorithm repeatedly compares adjacent elements and swaps them if needed?

Which tree traversal method visits nodes in the order: Left, Root, Right?

Arrange the operations in correct order to delete an element from the rear of a queue implemented using a singly linked list:I. Traverse to second last nodeII. Set its next to NULLIII. Free the last nodeIV. Check if queue is emptyChoose the correct option:

Which condition indicates a queue is full in a circular array implementation?

Which of the following is NOT a characteristic of structured programming?

For an array declared as int arr[5][5]; in C, the element arr[2][3] is accessed in memory at:

Which of the following statements about recursion is FALSE?

What will be the state of a queue after performing the following operations on an empty queue: enqueue(10), enqueue(20), dequeue(), enqueue(30)?

Which of the following best describes the difference between top-down and bottom-up problem solving?

In a binary tree, the number of null pointers is equal to:

In C++, the concept of data hiding is implemented using:

In C++, which symbol is used to indicate inheritance?

What is function overloading in C++?

What does the eof() function do in file handling?

What is runtime polymorphism achieved through in C++?

Which of the following best differentiates Object Oriented Programming from Procedure Oriented Programming?

Consider the following function:int sum(int a, int b) { return a + b; }float sum(float a, float b) { return a + b; }What concept is demonstrated here?

What will be the output of the following code?int x = 5;int y = ++x * 2;cout << y;

Identify the correct statement regarding multiple inheritance:

Which of the following statements about pointers to member functions is true?

In the context of file I/O in C++, which of the following statements is false?

Which of the following is not allowed in a class definition in C++?

What is the extension of a compiled Java file?

Which method is used to start a thread in Java?

What does System.out.println(10 + 20 + "Java"); print?

What is garbage collection in Java?

Match the casting types with their example:Column - Ai. Widening Castii. Narrowing Castiii. Upcastingiv. DowncastingColumn - B1. int i = (int) 3.5;2. double d = 5;3. Animal a = new Dog();4. Dog d = (Dog) new Animal();Options:

Which of the following statements about Java arrays is true?

What does the finally block do in exception handling?

Which of the following is not a valid Java thread method?

Determine the correct order for exception propagation in Java when a method throws a checked exception:I. Method declares exception with throwsII. Calling method handles using try-catchIII. Checked exception is thrownIV. JVM checks exception declarationOptions:

Consider the following snippet. What will be the output?int x = 10;int y = ++x * 2 + x--;System.out.println(y);Options:A) 21B) 22C) 23D) 24

What is the default priority of a thread in Java?

What will be the output of the following Java code?int[] arr = new int[]{1, 2, 3};System.out.println(arr[3]);

What does .NET Framework primarily provide?

In VB.NET, how do you declare a variable of type Integer?

In VB.NET, what does the Imports keyword do?

In VB.NET, which of the following is NOT a valid loop?

Arrange the following components in .NET Framework architecture from bottom to top:I. Common Language Runtime (CLR)II. Base Class Library (BCL)III. ASP.NET, Windows Forms, ADO.NETIV. User ApplicationChoose the correct option:

What is the correct syntax to call a function with two arguments in VB.NET?

Which control is used to display multiple items, allowing multiple selections?

In a Try...Catch block, what is the use of the Finally block?

Which of the following correctly declares and initializes a 2-dimensional array in VB.NET?

Which component of the .NET architecture handles security, memory management, and exception handling?

What does the following code output?
int x = 10;
int p = &x; printf("%d", p);

What is the output of this code?
char str[] = "Hello";
printf("%c", *(str + 1));

What is the correct sequence to create and link two tables with a foreign key?
I. Create the parent table
II. Define the foreign key in the child table
III. Create the child table
Options:

Arrange the following steps involved in query compilation in the correct order:
I. Translation of high-level query into relational algebra
II. Parsing and validating the SQL query
III. Optimization of the relational algebra query
IV. Generating an execution plan for the query
Options:

Consider a relation R(A, B, C) with the following functional dependencies:
1. A -> B
2. B -> C
What is the candidate key of R?

Arrange the operations in correct order to delete an element from the rear of a queue implemented using a singly linked list:
I. Traverse to second last node
II. Set its next to NULL
III. Free the last node
IV. Check if queue is empty
Choose the correct option:

Consider the following function:
int sum(int a, int b) { return a + b; }
float sum(float a, float b) { return a + b; }
What concept is demonstrated here?

What will be the output of the following code?
int x = 5;
int y = ++x * 2;
cout << y;

Match the casting types with their example:
Column - A
i. Widening Cast
ii. Narrowing Cast
iii. Upcasting
iv. Downcasting
Column - B
1. int i = (int) 3.5;
2. double d = 5;
3. Animal a = new Dog();
4. Dog d = (Dog) new Animal();
Options:

Determine the correct order for exception propagation in Java when a method throws a checked exception:
I. Method declares exception with throws
II. Calling method handles using try-catch
III. Checked exception is thrown
IV. JVM checks exception declaration
Options:

Consider the following snippet. What will be the output?
int x = 10;
int y = ++x * 2 + x--;
System.out.println(y);
Options:
A) 21
B) 22
C) 23
D) 24

What will be the output of the following Java code?
int[] arr = new int[]{1, 2, 3};
System.out.println(arr[3]);

Arrange the following components in .NET Framework architecture from bottom to top:
I. Common Language Runtime (CLR)
II. Base Class Library (BCL)
III. ASP.NET, Windows Forms, ADO.NET
IV. User Application
Choose the correct option:

Arrange the following models in order of their historical development:
I. Waterfall Model
II. Spiral Model
III. Agile Model
IV. Prototyping Model
Choose the correct option:

Arrange the following types of IP addresses in the correct order of usage priority during troubleshooting:
I. Loopback Address
II. Public IP Address
III. Private IP Address
IV. Link-local Address (for IPv6)
Choose the correct options:

Match Special IP Addresses with Their Purpose:
List - A
i. 127.0.0.1
ii. 255.255.255.255
iii. 0.0.0.0
iv. 169.254.x.x
List - B
1. Loopback testing
2. Broadcast address
3. Default or unknown address
4. APIPA (Automatic Private IP Assignment) address
Options: