Domain Name System (DNS) (OCR A-Level Computer Science): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What does DNS convert domain names into?
What does DNS convert domain names into?
IP addresses
What is DNS often described as for the internet?
What is DNS often described as for the internet?
A phonebook
Which DNS servers are at the highest level?
Which DNS servers are at the highest level?
Root DNS Servers
What do authoritative DNS servers hold?
What do authoritative DNS servers hold?
Actual IP addresses for domains
What is the first step in a DNS lookup?
What is the first step in a DNS lookup?
Check local cache
Who typically provides the recursive DNS resolver?
Who typically provides the recursive DNS resolver?
Your ISP or a DNS service
What do TLD DNS servers manage?
What do TLD DNS servers manage?
Specific TLDs
What does an A Record map a domain name to?
What does an A Record map a domain name to?
An IPv4 address
What does an AAAA Record map a domain name to?
What does an AAAA Record map a domain name to?
An IPv6 address
What does an MX Record specify?
What does an MX Record specify?
The mail server for the domain
Is DNS a single server or a distributed system?
Is DNS a single server or a distributed system?
A distributed, hierarchical system
What is a potential issue with DNS caching?
What is a potential issue with DNS caching?
It can cause outdated IP addresses