Network and System Security Quiz

What is a recommended response to complex firewall rule sets?

• Perform regular reviews and clean-up

• Ignore the rules and let them accumulate

• Increase the number of rules to cover all scenarios

• Consult with a third-party vendor for every change

Which term refers to weakly secured public cloud storage?

• Misconfigured S3 bucket

• Insecure FTP server

• Unprotected database

• Weak firewall configuration

What should organizations do regularly with firewall configurations?

• Audit them to close unnecessary ports

• Ignore them until a problem arises

• Change them every month regardless of need

• Share them with all employees for transparency

What network service is exposed when port 21 is open?

• HTTP

• FTP

• SMTP

• SSH

What tool is commonly used to capture network packets?

• Tcpdump

• Wireshark

• Netcat

• Nmap

What could attackers gain from exposed cloud storage buckets?

• Sensitive data such as personal records

• Publicly available documents

• Software installation files

• System configuration settings

What is a major drawback of insecure protocols like FTP and IMAP?

• They transmit credentials in plaintext

• They are faster than secure protocols

• They require more bandwidth

• They are easier to implement

What does su and sudo help achieve in system security?

• Permanent root access for all users

• Temporary elevated privileges without using root login

• Complete system access without authentication

• Enhanced security through user isolation

What action reduces the attack surface of a network?

• Closing unused ports

• Increasing bandwidth

• Installing more firewalls

• Allowing all incoming traffic

What protocol should replace HTTP for secure communication?

• FTP

• HTTPS

• SMTP

• POP3