George works as a Network Administrator for Blue Soft Inc. The company uses Windows Vista operating system. The network of the company is continuously connected to the Internet. What will George use…

Question

Exhibit

Options

• AFirewall
• BWindows Defender
• CRouter
• DSwitch

• A
  91% (30)
• B
  6% (2)
• D
  3% (1)

Explanation

A Firewall is the correct choice because it is specifically designed to monitor and control incoming and outgoing network traffic based on security rules, acting as a barrier between a trusted internal network and untrusted external networks like the Internet - making it the primary tool for protecting against intrusion.

Why the distractors are wrong:

• B. Windows Defender is an antimalware/antispyware tool that protects against malicious software already on the system, not network intrusions.
• C. Router directs network traffic between networks but does not inherently block or filter intrusion attempts (without firewall features explicitly enabled).
• D. Switch operates at the data link layer to connect devices within a LAN and has no intrusion-prevention capability.

Memory tip: Think of a firewall as a security guard at the gate - it decides who gets in and out of the network, while Windows Defender is the guard inside the building catching threats that already got past the gate.

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