Cisco Network Engineer Mock Interview
Master 30 Cisco Network Engineer interview questions covering routing protocols, network security, and troubleshooting scenarios.
Question 13 of 30
Can you describe what a DNS is and the services it provides?
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William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
This is a technical question meant to test your competency in this field. It also provides them an example of your communication skills. When you answer the question, make sure you first define the term, then describe the service it provides in common language. This will demonstrate your ability to work with individuals from other parts of Cisco's organization who may not have a technical background.
William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
"A Domain Name Server, or DNS, acts as a network's phone book. Organization-specific and public IP addresses and their hostnames are stored in the DNS. When a user enters a web address or URL, the DNS translates it into a corresponding machine language IP address. The user is then routed to the appropriate IP address, and the information or website is presented to them. There is a Central Registry where all the domain names are stored and updated periodically. All Internet service providers and host companies usually interact with the central registry to get the updated DNS details. In addition, private IP addresses for internal use by an organization are stored in a registry on the organization's DNS server."
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