src: https://www.networkacademy.io/ccna/ethernet/vlan-concept “Virtual” means not physically existing but appear to exist physically. IEEE 802.1q standard and VLAN tagging and trunking basics. IEEE 802.1q, often referred to as Dot1q, is the networking standard that supports VLANs on the Ethernet network. VLAN’s are local to each switch and VLAN info is not passed between two switches. q).what…

q).What is dnsperf ? ans). *.dnsperf is a DNS server performance testing tool. q).

ICMP Internet control message protocol q). Why we use ICMP? ans). *.The IPV4 provides unreliable and connectionless datagram delivery. It was designed this way to make efficient use of network resources. *.The IP protocol is a best-effort delivery service that delivers a datagram from its original source to its final destination. *.However, it has two…

q).what is http/2 or h2? ans). *.HTTP/2 was developed to address the limitations of HTTP/1.1 and improve the performance of web applications. *.HTTP/2, also called h2 for simplicity. RFC 7540 *.Potential move to serving over TLS (HTTPS).