CompTIA Network+ Practice Test

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Study for the CompTIA Network+ Exam. Enhance your skills with flashcards and multiple choice questions, each with explanations. Prepare effectively for your certification exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the purpose of the dig command?

To create DNS zone files
To communicate with DNS servers
To ping hostnames and IP addresses
To cache DNS queries

The correct answer is: To communicate with DNS servers

The dig command, short for "Domain Information Groper," is primarily used to communicate with DNS servers to query for DNS records. It allows users to retrieve detailed information about a specific domain name, including its IP addresses, mail servers, name servers, and various other types of DNS records. This command is highly useful for troubleshooting DNS issues and for understanding how DNS resolution works. The dig command sends specific queries to DNS servers and receives responses, allowing you to see how a domain's DNS records are set up. This ability is essential for network administrators and others involved in network management because it helps diagnose problems related to DNS resolution, such as misconfigured DNS records or server issues. The other choices refer to different functions that are not applicable to the dig command. Creating DNS zone files pertains more to DNS server configuration, pinging addresses is related to network connectivity checks rather than DNS, and caching queries is a function managed by DNS resolvers, which temporarily store query results to speed up future requests.