Solution

The correct answer is Option 3.

Key Points

• Internet Message Access Protocol (IMAP): A protocol that allows accessing email on the server without downloading them. (IV)
• Address Resolution Protocol (ARP): A protocol that maps IP addresses to MAC addresses on a local area network. (III)
• Post Office Protocol (POP): A protocol that allows email clients to retrieve emails from a mail server. (I)
• TELNET: Used for remote login to another computer over a network. (II)

Additional Information

• IMAP allows users to access and manage their email directly on the mail server, making it possible to access the same inbox from multiple devices.
• ARP is essential for local area network communication as it translates IP addresses into MAC addresses, allowing devices to locate each other on the same network.
• POP downloads emails from the mail server to the local device, making it accessible without an internet connection but not synchronizable across multiple devices.
• TELNET is one of the oldest network protocols used to establish a remote connection to another computer, typically for managing devices or systems.