Exponentia.ai Senior Consultant Interview Questions and Answers

DNS port number is 53.

• DNS port number is used for DNS queries and responses.

• It is a well-known port number, which is 53.

• DNS uses both TCP and UDP protocols on port 53.

SSH port number is 22.

• SSH port number is used for secure communication over a network.

• Default port number for SSH is 22.

• Port number can be changed for security reasons.

• Example: ssh user@hostname -p 2222

A brute force attack is a trial-and-error method used by hackers to crack passwords or encryption by systematically trying all possible combinations.

• Brute force attacks are time-consuming but effective against weak passwords.

• Hackers use automated tools to try all possible combinations until the correct one is found.

• Examples include trying all possible 4-digit PIN codes or dictionary words as passwords.

• Strong passwords ...read more