Network Diagnostics
Everything on SkillVeris tagged Network Diagnostics — collected across the glossary, study notes, blog, and cheat sheets.
7 resources across 1 library
Interview Questions(7)
What is ICMP (Internet Control Message Protocol)?
ICMP (Internet Control Message Protocol) is a Network-layer protocol used by routers and hosts to send diagnostic and error-reporting messages — such as 'desti…
What is a Loopback Address?
A loopback address is a reserved IP address that a device uses to send traffic to itself, letting software test its own network stack without touching any phys…
What is Ping and How Does It Work?
Ping is a network diagnostic utility that sends ICMP Echo Request packets to a target host and measures whether it replies with an ICMP Echo Reply, reporting r…
What is Traceroute and How Does It Work?
Traceroute is a network diagnostic tool that reveals the sequence of routers (hops) a packet passes through to reach a destination, by sending probe packets wi…
What is netstat?
netstat is a command-line utility that displays active network connections, listening ports, routing tables, and per-protocol statistics on a host, making it a…
What is nslookup?
nslookup is a command-line tool that queries DNS servers to resolve a domain name to its IP address, or an IP address back to a domain name, and can also fetch…
What is Wireshark?
Wireshark is a free, open-source network protocol analyzer that captures traffic passing through a network interface and lets an engineer inspect every packet…