Exam N10-008 topic 1 question 636 discussion

this question was on the test 08/21/23

chatGPT ; The output provided indicates DNS (Domain Name System) queries from the host (192.168.1.15) attempting to resolve the domain name "comptia.com" by sending DNS queries to the DNS server (192.168.1.252) over UDP (User Datagram Protocol) port 53. However, the queries seem to be failing or encountering issues, as indicated by the repeated attempts with the same destination and port, but varying flags and potentially malformed DNS queries (e.g., "comptia. com" and "comptia-com"). The issue is not with the routing loop, broadcast storm, or missing routes, as the packets are being sent to the DNS server but are not getting successful responses. Given the repeated queries and potential formatting errors in the DNS queries, the most likely explanation for the issue with the browser displaying an error after running tcpdump is: B. The host is configured with incorrect DNS settings.

B Explanation: The issue is that the host is configured with incorrect DNS settings. DNS (Domain Name System) is a service that resolves domain names to IP addresses. For example, the domain name www.comptia.org is resolved to the IP address 104.18.25.140 by a DNS server. If the host has incorrect DNS settings, such as an invalid or unreachable DNS server address, it will not be able to resolve domain names to IP addresses, and therefore it will not be able to access websites by their names. The output in the image shows that the host can ping the IP address of www.comptia.org, but it cannot ping the domain name itself, indicating a DNS problem. References: CompTIA Network+ N10-008 Certification Study Guide, page 154; The Official CompTIA Network+ Student Guide (Exam N10-008), page 6-8.

It's D due to Port 53 being mentioned in the last line. 53 port is for DNS.

Which command is used to generate this output?

its shows port 53 on the last oct on this question its D

D. The host is missing a route to the website - This could be a possibility. If the host is missing a route, it may encounter issues with packet fragmentation, and the "DF" flag might be relevant in the context of preventing fragmentation.

C. Broadcast Storm Reviewing the provided output shows that the third item has a later timestamp than the fourth item, thus packets are being delivered out of sequence. A broadcast storm results in a high volume of broadcast packets flooding the network, which can lead to congestion, packet collisions, and unpredictable packet delivery times.