Question

1. What is meant by the term “hot-swappable”?
2. The Domain Name System (DNS) is used in what capacity and how does it work?
3. Discuss the difference between the IP, DNS and MAC addresses – how do the relate to one another in a network?

Answer 1

"HOT-SWAPPABLE" :- The word hot swappable is often used in electronics and computers, hot is referred to as "active" OR "ON". So these are peripheral or device or component which can be added or removed while a computer is running.

Replacing a device when a computer or electronic device is powered on is referred as hot swapping.

Google DNS server 8.8.8.8 or openDNS must be having more than a terabyte , you local ISP might running it off at 16 GB server. so ,its more of a load dependent thing ,rather than a general DNS server specific configuration.

DNS servers are capable of handling up to 150,000 DNS queries per second. High-performance DNS servers can handle around 200,000 queries per second.

Mac address is layer 2 whereas IP is layer 3.

Mac address is 6 byte hexadecimal address whereas IP address is either 4 byte or 6 byte.

NIC cards manufacturer provides the mac address whereas intrnet service provider gives the IP address.

MAC address is the physical address of the computer whereas IP is the logical address.

Mac address cant be found by third party whereas IP address can be found by third party.