Network TroubleshootingQuestion 91 of 100
Intermittent connectivity affects devices only during business hours, correlating with heavy equipment operation nearby. Which cabling issue is the likely culprit?
a.Incorrect DNS server
b.Electromagnetic interference (EMI) on copper cabling
c.Exhausted DHCP scope
d.A duplicate default gateway
Explanation
Interference from nearby heavy equipment induces EMI on unshielded copper cabling, causing errors and intermittent connectivity that tracks with equipment use. Rerouting cable away from the source or using shielded cable or fiber resolves it. The time-based correlation is a strong clue.
Practice all 100 questions free — no signup required.
Related questions on this topic
- A user reports they can access internal resources but not the internet. Other users are unaffected. What should the technician check first on that host?
- Which command tests basic reachability to a remote host by sending ICMP echo requests?
- An access switch port connected to a PC keeps going into an err-disabled state. Which security feature most likely triggered this?
- A pair of switch ports negotiated a duplex mismatch. Which symptom is most characteristic of this condition?
- After confirming a fix resolves the reported issue, which troubleshooting step should be performed next?
- A technician suspects a specific cable among many in a bundle. Which tool pair helps locate and identify that individual cable?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against CompTIA Network+ (N10-009) · How we review