Domain Name System (DNS)

  1. DNS Resolution Process
    1. Resolution Overview
      1. Name-to-Address Translation
        1. Query Types and Methods
          1. Resolution Algorithms
          2. Query Types
            1. Recursive Queries
              1. Client Expectations
                1. Resolver Responsibilities
                2. Iterative Queries
                  1. Server-to-Server Communication
                    1. Referral Responses
                    2. Non-Recursive Queries
                      1. Cache-Only Lookups
                        1. Local Data Queries
                      2. Resolution Steps
                        1. Application Request Initiation
                          1. Local Cache Consultation
                            1. Browser Cache
                              1. Operating System Cache
                                1. Application Cache
                                2. Stub Resolver Query
                                  1. Recursive Resolver Processing
                                    1. Cache Lookup
                                      1. Root Server Query
                                        1. TLD Server Query
                                          1. Authoritative Server Query
                                          2. Response Assembly
                                            1. Cache Storage
                                              1. Client Response Delivery
                                              2. Caching Mechanisms
                                                1. Time to Live Values
                                                  1. TTL Configuration
                                                    1. Cache Expiration
                                                      1. Refresh Behavior
                                                      2. Positive Caching
                                                        1. Negative Caching
                                                          1. NXDOMAIN Responses
                                                            1. NODATA Responses
                                                            2. Cache Poisoning Prevention
                                                            3. Reverse DNS Resolution
                                                              1. PTR Record Lookups
                                                                1. in-addr.arpa Structure
                                                                  1. ip6.arpa Structure
                                                                    1. Reverse Zone Management

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                                                                  3. DNS Server Types and Roles

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                                                                  5. DNS Resource Records