200-301: Cisco Certified Network AssociateDemo

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QuestionQ294

Security Fundamentals

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Refer to the exhibit. A newly configured PC cannot connect to the internet using TCP port 80 to www.cisco.com. Which setting must be changed for the connection to function?

  • A Subnet Mask
  • B DNS Servers
  • C Default Gateway
  • D DHCP Servers
Explanation

The IP address, subnet mask, and default gateway shown are all in the same /29 network, so local Layer 3 addressing is valid for reaching the router. The failure is specifically to connect to www.cisco.com, which requires resolving that hostname to an IP address first. Because the DNS server setting is 0.0.0.0, the PC has no usable DNS resolver configured, so name resolution fails. Configuring a valid DNS server fixes the connection to the website by name.

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