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Zorluk: OrtaRemote Access Technologies and Tools

A systems administrator is deploying a cross-platform remote administration tool to manage heterogeneous endpoints running Windows, macOS, and Linux operating systems. The administrator chooses Virtual Network Computing (VNC) software, which utilizes the Remote Frame Buffer (RFB) protocol for graphical desktop sharing. Which inbound transport port must be permitted on host firewalls to allow default VNC connections?

  1. A
    TCP 22
  2. B
    TCP 23
  3. TCP 5900Cevap
  4. D
    TCP 3389

Cevap

TCP port 5900 must be opened on host firewalls to allow default VNC remote desktop connections.
Virtual Network Computing (VNC) is a platform-independent desktop sharing system that operates using the Remote Frame Buffer (RFB) protocol. By standard convention, VNC listens for incoming connection requests on TCP port 5900.

Adım Adım Çözüm

1
Identify the remote management tool and protocol specified in the scenario.
The scenario specifies Virtual Network Computing (VNC), which operates using the Remote Frame Buffer (RFB) protocol for cross-platform desktop control.
Different remote access technologies use specific default transport layer ports.
2
Match Virtual Network Computing (VNC) to its standard default port specification.
VNC listens by default on TCP port 5900 (display :0).
CompTIA A+ objectives require memorization and correct application of default well-known ports for remote administration tools.
3
Differentiate VNC from other common remote access protocols.
RDP uses TCP 3389, SSH uses TCP 22, and Telnet uses TCP 23.
Verifying alternative options confirms TCP 5900 as the single correct port for VNC traffic.

Anahtar Kavram

Remote Access Ports and Protocols (VNC TCP 5900, RDP TCP 3389, SSH TCP 22, Telnet TCP 23)
Tahmini Süre:1m 0s
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Remote Access Technologies and Tools

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