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Question

Difficulty: EasyNetworking Ports and Protocols

A desktop technician needs to configure a remote management application to communicate with a legacy network switch using unencrypted command-line access via Telnet. Which default port should the technician open on the local firewall?

  1. Port 23Answer
  2. B
    Port 22
  3. C
    Port 80
  4. D
    Port 3389

Answer

Port 23 is the default port for Telnet, providing unencrypted command-line access.
Telnet is a legacy network protocol that provides unencrypted, text-based command-line communication over default port 23.

Step-by-Step Solution

1
Identify the protocol requested in the scenario.
The scenario specifically requests terminal command-line management via Telnet.
Determining the correct service protocol is required to select its assigned port number.
2
Recall the standard port assignment for Telnet.
Telnet operates on TCP port 23.
Standard well-known ports map specific network applications to transport services.

Key Concept

Telnet Default Port Assignment
Estimated Time:45s
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Topics

Networking Ports and Protocols

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