CompTIA Linux+ (XK0-005) — Question 297

A Linux administrator is configuring a new internal web server fleet. The web servers are up and running but can only be reached by users directly via IP address. The administrator is attempting to fix this inconvenience by requesting appropriate records from the DNS team. The details are:

Hostname: devel.comptia.org -
IP address: 5.5.5.1, 5.5.5.2, 5.5.5.3, 5.5.5.4

Name server: 5.5.5.254 -
Additional names: dev.comptia.org, development.comptia.org

Which of the following types of DNS records should the Linux administrator request from the DNS team? (Choose three).

Answer options

• A. MX
• B. NS
• C. PTR
• D. A
• E. CNAME

Correct answer: B, D, E

Explanation

The administrator should request NS records to define the name server for the domain, A records to map the domain names to their IP addresses, and CNAME records to create aliases for the additional names. MX records are not necessary as they pertain to mail exchange, and PTR records are used for reverse DNS lookups, which are not needed in this scenario.