Network and System Administration · Unit 5
DNS Configuration and Zone Management
Exam-focused notes for DNS Configuration and Zone Management (Network and System Administration, BIT451): what the TU syllabus asks and how it has actually been tested, with 4 solved past questions from this unit.
What this unit covers
- DNS principles and fundamentals
- DNS server types and functionalities
- Primary, secondary, and caching DNS servers
- DNS zone transfer concepts
- Full zone transfer (AXFR) process
- Incremental zone transfer (IXFR) process
- Zone transfer security importance
DNS principles and fundamentals
What are DNS principles? Explain different server types focusing on its functionalities.[10]
DNS (Domain Name System) operates on the following core principles: - DNS uses a hierarchical naming scheme organized as a tree structure - Domain names are organized in levels: root, top-level domains (TLDs), second-level domains, and subdomains - Example:...
Full solved answer →DNS zone transfer concepts
Define DNS zone transfer. Why is it carried out? [5]
A DNS zone transfer is the process of copying or replicating all DNS records (resource records) from a primary DNS server to a secondary DNS server for a particular DNS zone. It involves the complete transfer of zone data, including all A records, MX record...
Full solved answer →Explain the concept of DNS zone transfer with an example. [5]
A DNS zone transfer is the process of copying all DNS records (the complete zone file) from a primary DNS server to a secondary DNS server. It ensures that secondary nameservers maintain an identical copy of the zone database for redundancy and load distrib...
Full solved answer →What is DNS zone transfer?Explain the difference between full zone transfer (AXFR) and incremental zone transfer (IXFR).Why is zone transfer security important?[3+5+2]
DNS zone transfer is the process of copying or replicating the entire DNS database (zone file) from a primary DNS server to a secondary DNS server. It involves transferring all DNS records (resource records) associated with a particular domain zone from the...
Full solved answer →Make Unit 5 stick
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