1. This message type is used when uploading data files to a web server.
Explanation: HTTP uses the POST message to upload data files to a web server. The GET message is used by clients to request data and the PUT message is used to upload content such as images.
2. This protocol is used by a web browser to establish a connection to a web server.
Explanation: Web browsers connect to web servers over HTTP. IMAP and SMTP are email protocols. SSL is an encryption protocol used with HTTPS.
3. This protocol is used by a client to send email to a mail server.
Explanation: Email clients connect to SMTP servers over port 25 to send email. POP and IMAP are used by clients to receive email. HTTP is used between web browsers and web servers.
4. Which is a feature of IMAP?
- It uploads email messages to a server.
- It listens passively on port 110 for client requests.
- It downloads a copy of email messages leaving the original on the server.
Explanation: IMAP is a protocol for clients to retrieve copies of email messages from an IMAP server. The original messages remain on the server until manually deleted.
5. True or false? HTTP is a secure protocol.
Explanation: The correct answer is False. HTTP sends information in plaintext and is not considered secure. If security is desired, HTTP Secure (HTTPS) should be used.