Examkin

Question

Difficulty: EasyRemote Access Technologies and Tools

A help desk technician needs to establish a basic, unencrypted text-based terminal session to configure a legacy network device on an isolated lab network. Which protocol and default port should the technician select?

  1. Telnet on TCP port 23Answer
  2. B
    Secure Shell (SSH) on TCP port 22
  3. C
    Remote Desktop Protocol (RDP) on TCP port 3389
  4. D
    Virtual Network Computing (VNC) on TCP port 5900

Answer

Telnet on TCP port 23 provides an unencrypted text-based terminal session.
Telnet is designed for text-based remote administration and transmits data in plain text without encryption. It operates over TCP port 23 by default, matching the requirement for an unencrypted terminal session to a legacy device.

Step-by-Step Solution

1
Identify the requested interface type and security level
The scenario requires an unencrypted, text-based command-line terminal session.
Legacy devices often rely on plain-text command-line protocols for basic access.
2
Match the requirement to the appropriate protocol and default port
Telnet delivers cleartext command-line management over TCP port 23.
Telnet transmits all traffic without encryption over TCP port 23.

Key Concept

Telnet Protocol and Port Identification
Rate this question

Topics

Remote Access Technologies and Tools

More questions from this topic