Network Protocols Quiz

Telnet sends information securely over the network using encryption.

• True

• False

SSH operates over the same port as SFTP, which is TCP port 22.

• True

• False

DNS uses only UDP port 53 for all communications.

• True

• False

SMTP uses TCP port 25 for encrypted email transmission.

• True

• False

DHCP assigns IP addresses dynamically using UDP ports 67 and 68.

• True

• False

Scenario: You need to provide remote access to a router, but the security team prohibits sending data in plaintext. Which protocol should you use?

• Telnet over TCP port 23

• SSH over TCP port 22

• RDP over TCP port 3389

• FTP over TCP port 21

Scenario: A website must handle confidential data. Which protocol ensures encrypted communication with users?

• HTTP over TCP port 80

• HTTPS over TCP port 443

• FTP over TCP port 21

• SNMP over UDP port 161

Scenario: Your team is troubleshooting why emails are not being sent. The mail server is configured for TCP port 25. What is the likely issue?

• Port 25 blocks inbound emails.

• The server needs to use TCP port 587 for encrypted email.

• The server must switch to TCP port 53.

• SMTP uses UDP, not TCP.

Scenario: You are assigned to configure a file transfer between two secure servers. Which protocol is most suitable?

• FTP over TCP port 21

• SFTP over TCP port 22

• TFTP over UDP port 69

• RDP over TCP port 3389

Scenario: The network time on your devices is out of sync. Which protocol should you use to synchronize time across devices?

• SNMP over UDP port 161

• NTP over UDP port 123

• DHCP over UDP port 67

• LDAP over TCP port 389