MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -A queue (FIFO-First in First Out) data structure is used by BFS. You mark any node in the graph as root and start traversing the data from it. BFS traverses all the nodes in the graph and keeps dropping them as completed. BFS visits an adjacent unvisited node, marks it as done, and inserts it into a queue.

Detailed explanation-2: -BFS uses the FIFO (First In First Out) principle while using the Queue to find the shortest path. However, BFS is slower and requires a large memory space.

Detailed explanation-3: -BFS is implemented using a FIFO list; on the other hand, DFS is implemented using a LIFO list. In BFS, you can never be trapped into finite loops, whereas in DFS, you can be trapped into infinite loops.

Detailed explanation-4: -The queue follows the First In First Out (FIFO) queuing method, and therefore, the neigbors of the node will be visited in the order in which they were inserted in the node i.e. the node that was inserted first will be visited first, and so on.

Detailed explanation-5: -DFS stands for Depth First Search. In DFS traversal, the stack data structure is used, which works on the LIFO (Last In First Out) principle. In DFS, traversing can be started from any node, or we can say that any node can be considered as a root node until the root node is not mentioned in the problem.