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GSNA · Question #301

GSNA Question #301: Real Exam Question with Answer & Explanation

The correct answer is C. The transport layer port numbers and the application layer headers. A firewall stops delivery of packets that are not marked safe by the Network Administrator. It checks the transport layer port numbers and the application layer headers to prevent certain ports and applications from forwarding the packets to an intranet. Answer: D, A, and B are i

Question

You work as a Network Administrator for XYZ CORP. The company has a Linux-based network. The company needs to provide secure network access. You have configured a firewall to prevent certain ports and applications from forwarding the packets to the company's intranet. What does a firewall check to prevent these ports and applications from forwarding the packets to the intranet?

Options

  • AThe network layer headers and the session layer port numbers
  • BThe application layer port numbers and the transport layer headers
  • CThe transport layer port numbers and the application layer headers
  • DThe presentation layer headers and the session layer port numbers

Explanation

A firewall stops delivery of packets that are not marked safe by the Network Administrator. It checks the transport layer port numbers and the application layer headers to prevent certain ports and applications from forwarding the packets to an intranet. Answer: D, A, and B are incorrect. These are not checked by a firewall.

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