Ping to a hospital's web server succeeds, yet browsers cannot open the site. A colleague says the network must be fine, so the problem is in the browsers. What is wrong with this reasoning?
Le ping vers le serveur web d'un hôpital réussit, mais les navigateurs ne parviennent pas à ouvrir le site. Un collègue affirme que le réseau fonctionne forcément et que le problème vient donc des navigateurs. Qu'est-ce qui cloche dans ce raisonnement ?
Answers
APing travels over port 80, so a reply already shows the web port is openLe ping passe par le port 80, donc une réponse montre déjà que le port web est ouvert
BA successful ping confirms that the web server software itself is up and runningUn ping réussi confirme que le logiciel du serveur web lui-même est démarré et fonctionne
CPing uses ICMP, which has no ports, so it cannot show that TCP 443 is openLe ping utilise ICMP, qui n'a pas de ports : il ne peut pas montrer que TCP 443 est ouvert
DBrowsers also rely on ICMP, so they must work whenever ping works as wellLes navigateurs utilisent aussi ICMP, ils doivent donc fonctionner dès que le ping fonctionne
The answer and explanation are in the full bank.
This question is one of 2,831 in the paid banks. Each comes with the correct answer and the reasoning behind it, not just a mark.
Unlock for 5,000 RWFMIFOTRA exam practicealigned to Practice set: Ports and Protocols·3 marks·Hard
More Networking questions
- A wireless mesh network spans a large warehouse. If one access point fails, data is automatically rerouted through another path. This self-healing nature is characteristic of what topology?
- You are tasked with connecting two office buildings across a city spanning 15 miles. Which network type best fits this deployment?
- A hospital requires dedicated high-speed fiber channels to connect its database servers directly to storage arrays. What network type is being utilized?
- An employee pairs their Bluetooth headphones to their smartphone. What type of network does this pairing establish?
- A university interconnects multiple LANs across its academic buildings using a unified administration domain. This best describes a...
- Your company leases a dedicated MPLS circuit from an ISP to connect headquarters in New York to a branch in Tokyo. What network type is this?
- A system administrator needs to allocate IP addresses for a subnet that requires 14 hosts. Which CIDR notation provides exactly enough addresses without excessive waste?
- An engineer configures a branch router with IP 10.10.10.130/26. What is the broadcast address for this specific subnet?