Question

During the name resolution process, which technique is used to avoid congestion when querying a server?

Answer 1

During the name resolution process, the technique is used to avoid congestion when querying a server is as follows:

• The name resolution usually happens in a DNS Server. During this process, the conversion generally happens from Name to IP, or IP to Name.
• But while doing so, there could be congestion or traffic, as the number is huge. To avoid this, 'Caching' was introduced.
• Most DNS Servers tend to cache the information they receive. This happens up to a certain time limit known as The Time to Live (TTL).
• DNS Servers could use these cached information to answer the queries they receive.
• This technique reduces the amount of DNS message congestion hugely on that server.
• When a query arrives, the server decides whether is is stored. If stored the server then returns the answer with the stored cache.

Answer 2

Answer:Its Anycast

Explanation:

Anycast allows a request to be sent to an appropriate server based on factors, like location. This helps relieve severe congestion.