Network Protocols Flashcard

Front

Which protocol operates on port 53?

Back

DNS

Answer explanation

The Domain Name System (DNS) operates on port 53, which is used for resolving domain names to IP addresses. Other protocols like FTP, HTTP, and IMAP use different ports.

Front

What is the port number for the Internet Message Access Protocol (IMAP)?

Back

143

Answer explanation

The Internet Message Access Protocol (IMAP) uses port number 143 for communication. This port is designated for IMAP, while the other options (80, 25, 443) are used for HTTP, SMTP, and HTTPS respectively.

Front

Which protocol operates on port 443?

Back

HTTPS

Answer explanation

Port 443 is used by HTTPS, which is the secure version of HTTP. It encrypts data for secure communication over the internet, unlike HTTP which operates on port 80 and does not provide encryption.

Front

Which port number is used for Remote Desktop Protocol (RDP)?

Back

3389

Answer explanation

The Remote Desktop Protocol (RDP) uses port number 3389. This port is specifically designated for RDP connections, allowing users to remotely access and control another computer.

Front

Which protocol is used for text communication between two machines in plaintext? Options: FTP, SSH, Telnet, SMTP

Back

Telnet

Answer explanation

Telnet is the protocol used for text communication between two machines in plaintext. Unlike SSH, which encrypts data, Telnet transmits data without encryption, making it suitable for simple text-based interactions.

Front

Which protocol uses port 80 and is used for web traffic without encryption?

Back

HTTP

Answer explanation

The correct answer is HTTP, which uses port 80 for web traffic without encryption. HTTPS uses port 443 and includes encryption, while FTP and SMTP serve different purposes.

Front

Which protocol is used for clock synchronization between two machines?

Back

NTP

Answer explanation

NTP (Network Time Protocol) is specifically designed for clock synchronization between machines, ensuring accurate timekeeping across networks. The other options (SNMP, LDAP, SMB) serve different purposes.

Front

What port number is used by the Simple Mail Transfer Protocol (SMTP)?

Back

25

Answer explanation

The Simple Mail Transfer Protocol (SMTP) uses port number 25 for sending emails. Other options like 110 and 143 are used for POP3 and IMAP respectively, while 443 is for HTTPS.

Front

Which protocol uses port 514 for logging messages on a system?

Back

Syslog

Answer explanation

The Syslog protocol uses port 514 for logging messages on a system, making it the correct choice. SMTP, SNMP, and LDAP use different ports for their respective functions.

Front

What is the port number for LDAP?

Back

389

Answer explanation

The correct port number for LDAP (Lightweight Directory Access Protocol) is 389. This port is used for standard LDAP communication, while other options like 443 (HTTPS) and 110 (POP3) serve different protocols.