CompTIA A+ Core 1 (220-1101) — Question 2

A network administrator was notified that laptop users are unable to access or ping any network resources on the corporate network. Which of the following should the network administrator check FIRST?

Answer options

• A. DHCP
• B. AAA
• C. DNS
• D. ARP

Correct answer: A

Explanation

The correct answer is A, DHCP, because if laptop users cannot access network resources, it is possible they are not receiving valid IP addresses from the DHCP server. Checking DHCP first will help determine if IP address assignment is the root cause. The other options, AAA, DNS, and ARP, are less likely to be the immediate issue if devices cannot connect at all.