When does a domain name server send a request to an authoritative server?When does a domain name server answer a request without sending to the authoritative server?Under what circumstances is DNS iterative lookup used?How many top level domains exist?What is the significance of IPv6?If an ISP assigned you a /28 IPv4 address block, how many computers could you assign an address?Can IP use hardware MAC addresses instead of the IP addresses? Why or why not?

DNS and IP are essential for efficient communication and information exchange in today's…

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Comptia A+ Core 1 Exam: Guide To Computing Infrastructure (mindtap Course List)

10th Edition

ISBN:9780357108376

Author:Jean Andrews, Joy Dark, Jill West

Publisher:Jean Andrews, Joy Dark, Jill West

Chapter8: Network Infrastructure And Troubleshooting

Section: Chapter Questions

Problem 8TC

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When does a domain name server send a request to an authoritative server?
When does a domain name server answer a request without sending to the authoritative server?
Under what circumstances is DNS iterative lookup used?
How many top level domains exist?
What is the significance of IPv6?
If an ISP assigned you a /28 IPv4 address block, how many computers could you assign an address?
Can IP use hardware MAC addresses instead of the IP addresses? Why or why not?

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