CompTIA Network+ Practice Test 2025 - Free Network+ Practice Questions and Exam Prep Guide

The 'dig' command, which stands for Domain Information Groper, is a powerful tool used in network troubleshooting and administration primarily for querying Domain Name System (DNS) information. When you use the 'dig' command, you can retrieve a variety of DNS records, including but not limited to:

- **A records**: These provide the IP addresses associated with a domain name.

- **CNAME records**: These show the canonical name (alias) for a domain, indicating that one domain name is an alias for another.

- **MX records**: These specify mail exchange servers for handling email for the domain.

- **NS records**: These indicate the name servers authoritative for the domain.

The 'dig' command gives detailed and structured output that can help diagnose DNS issues, making it an essential tool for network professionals.

The other options, while relevant to networking, do not align with the primary functions of the 'dig' command. For example, network speed statistics and packet transmission rates pertain to performance monitoring and are typically gathered through different tools such as ping or traceroute. Local device configurations, on the other hand, involve settings on the individual devices themselves and are not accessible through DNS queries. Therefore, option B accurately captures the