CN unit 5

1)Which is a decentralized system for translating __________ into IP addresses.

2)The DNS resolver is responsible for sending DNS queries to __________ servers to resolve domain names.

3)Top-Level Domains (TLDs) are found at the highest level of the DNS hierarchy and include generic TLDs like _____________TLDs like ___________.

4) The DNS record type used to map an IP address to a domain name is called a __________record.

5)DNS operates primarily on port __________ for standard queries and responses.

6)A __________ is a DNS server that stores a complete copy of the DNS database.

7)The process of caching DNS records on a local DNS server to reduce the load on authoritative DNS servers is known as DNS __________.

8)When a DNS resolver can't find a domain name in its cache or local DNS database, it will typically query __________ DNS servers starting from the root and moving down the hierarchy.

9)DNSSEC, or Domain Name System Security Extensions, is used to add cryptographic

 __________ to DNS data to prevent DNS spoofing and tampering.

10)The DNS zone responsible for mapping IP addresses to domain names is the __________

 zone.