CompTIA Network+ (N10-008) — Question 648

A technician is troubleshooting intermittent connectivity between devices and viewing the following syslog entries from a switch:

21 Feb 2022 16:02:0231 NOTIFICATION %LINK-I-DOWN: G1/10
21 Feb 2022 16:02:0262 NOTIFICATION %LINK-I-UP: G1/10
21 Feb 2022 16:03:5321 NOTIFICATION %LINK-I-DOWN: G1/10
21 Feb 2022 16:03:7873 NOTIFICATION %LINK-I-UP: G1/10

Which of the following are these entries indicative of?

Answer options

• A. DDoS attack
• B. Jitter
• C. Latency
• D. Link flapping

Correct answer: D

Explanation

The syslog entries indicate that the link is repeatedly going down and coming back up, which is characteristic of link flapping. Options A, B, and C do not accurately describe the behavior observed in the logs, as they pertain to different network issues that do not involve a link's status changing in such a manner.