Computer Knowledge - MCQ Practice Questions

What is the difference between #include <stdio.h> and #include "stdio.h"?

Consider the code: int *p; int arr[5]; p = arr; What does p[2] represent?

Which of the following will correctly allocate memory for an array of 10 integers?

What will be the output of: int x = 5; int y = x++ + ++x; ?

Consider this complex code snippet: int a = 5, b = 2; int result = a * b + ++b * a--; printf("%d %d %d", result, a, b); What will be the output?

What is the output of this recursive function? int func(int n) { if(n <= 1) return 1; return n * func(n-1); } printf("%d", func(4));

What is the output of this code involving bitwise operations? int x = 5; // binary: 0101 int y = 3; // binary: 0011 printf("%d", x ^ y); // XOR operation

What is a deadlock in database management?

Which of the following best describes eventual consistency in distributed databases?

In network protocols, which layer does TCP/IP operate at?

What is the primary vulnerability addressed by SQL injection prevention techniques like parameterized queries?

In the context of graph databases, what is the primary advantage over relational databases for relationship-heavy queries?

What does CAP theorem state in distributed systems?

In cybersecurity, what is a zero-day vulnerability?

What does BASE model in NoSQL stand for?

In database replication, what is the primary difference between synchronous and asynchronous replication?

Which of the following best describes a distributed transaction and its challenges in microservices architecture?

In cybersecurity, what is SQL injection and why is it a critical vulnerability in 2024?

What is the primary advantage of using GraphQL over traditional REST APIs in modern application architecture?

In a B-tree of order m, what is the maximum number of keys that a non-root node can contain?