A+ 2.1B Practice: Common Ports

Which port numbers are used by FTP for data transfers?

• 20, 21
• 21, 22
• 22, 23
• 23, 24

What protocol is used for remote terminal connections that provide encrypted communications?

• FTP
• SSH
• Telnet
• SMTP

What is the primary function of SMTP?

• To receive emails
• To send emails
• To transfer files
• To manage network devices

Which port number is associated with DNS?

• tcp 25
• udp 53
• tcp 80
• udp 67

What does DHCP do in a network?

• Assigns IP addresses automatically
• Encrypts data communications
• Transfers files between devices
• Manages email servers

Which protocol is commonly used for web browsing without encryption?

• HTTPS
• FTP
• HTTP
• IMAP

What is the purpose of SNMP?

• To send and receive emails
• To establish remote desktop connections
• To manage and monitor network devices
• To transfer files securely

Which protocol uses TCP port 3389?

• FTP
• RDP
• SSH
• IMAP

What is the function of LDAP?

• To manage email messages
• To provide remote desktop access
• To query directory services
• To assign IP addresses to devices

Which protocol uses TCP port 22 for secure terminal communication?

• FTP
• SSH
• SMTP
• Telnet