CompTIA Network+ (N10-009) — Question 509

Clients report that phones are down. The network technicians determine that PCs and printers are online. However, the phones display the message Searching for service. Which of the following should the technicians check first?

Answer options

• A. PoE statistics on the switch
• B. DHCP options
• C. Data VLANs on switchports
• D. The default gateway on the switch

Correct answer: B

Explanation

The correct answer is B, as DHCP options are crucial for assigning IP addresses to the phones, and if they cannot obtain an IP, they will not function correctly. Other options, while potentially relevant, would not be the first step to diagnose the issue since the phones need a valid IP address from DHCP to operate properly.